HEP Phenomenology·hep-ph

Tue·Jun 14, 2022Tuesday·June 14, 2022

41 papers—29 primary·12 cross-listed·reconstructed*

01*
Search for Dark Sector by Repurposing the UVX Brazilian Synchrotron
L. Duarte🇧🇷 · L. Lin🇧🇷 · M. Lindner🇩🇪 · V. Kozhuharov🇧🇬 · S. V. Kuleshov🇨🇱 · A. S. de Jesus🇧🇷 · F. S. Queiroz🇧🇷 · Y. Villamizar🇧🇷 · H. Westfahl Jr🇧🇷
We propose the first Search for Dark Sector at the Brazilian Synchrotron Light Laboratory, site of Sirius, a fourth-generation storage ring. We show that UVX, Sirius predecessor, can be a promising dark sector detector, SeDS, with unprecedented sensitivity. The search is based on a 1-3 GeV positron beam impinging on a thick target leading the $e^{+} e^{-} \to γ A^{'}$ reaction, followed by a missing mass spectrum event reconstruction. We show that SeDS has the potential to probe dark photons with masses up to 55 MeV and kinetic coupling down to $ϵ \sim 1 0^{- 14}$ within months of data. Therefore, such experiment would constitute the best dark photon probe worldwide in the 10-55 MeV mass range, being able to probe an unexplored region of parameter space.
hep-phastro-ph.HEhep-exEPJC(2023)·7 citations
02*
Pseudo-Nambu-Goldstone inflation with twin waterfalls
Hyun Min Lee🇰🇷 · Adriana Menkara🇰🇷
We propose a pseudo-Nambu-Goldstone inflation where twin waterfall fields coupled to the inflaton are responsible for the graceful exit from inflation by a waterfall transition. In this scenario, the $Z_{2}$ symmetry for the waterfall fields and the inflaton protects the inflaton potential against dangerous quantum corrections coming from the waterfall couplings. We show that there is a wide range of natural model parameters and initial conditions for a successful inflation and discuss the reheating process by the perturbative decay of the waterfall field with a $Z_{2}$ invariant Higgs portal. We also present a microscopic model for the inflaton couplings to the twin waterfall fields in the context of a dark QCD with light and heavy quarks.
hep-phhep-thPLB(2022)·5 citations
03*
An accurate evaluation of electron (anti-)neutrino scattering on nucleons
Giulia Ricciardi🇮🇹 · Natascia Vignaroli🇮🇹 · Francesco Vissani🇮🇹
We discuss as accurately as possible the cross section of quasi-elastic scattering of electron (anti-)neutrinos on nucleons, also known as inverse beta decay in the case of antineutrinos. We focus on the moderate energy range from a few MeV up to hundreds of MeV, which includes neutrinos from reactors and supernovae. We assess the uncertainty on the cross section, which is relevant to experimental advances and increasingly large statistical samples. We estimate the effects of second-class currents, showing that they are small and negligible for current applications.
hep-phhep-exJHEP(2022)·48 citations
04*
Borel-Laplace Sum Rules with $τ$ decay data, using OPE with improved anomalous dimensions
Cesar Ayala🇨🇱 · Gorazd Cvetic🇨🇱 · Diego Teca🇨🇱
We perform numerical analysis of double-pinched Borel-Laplace QCD sum rules for the strangeless semihadronic $τ$ -decay data. The $D = 0$ contribution to the theoretical contour integral in the sum rules is evaluated by the (truncated) Fixed Order perturbation theory method (FO) and by the Principal Value (PV) of the Borel integration. We use for the full Adler function the Operator Product Expansion (OPE) with the terms $\sim ⟨ O_{D} ⟩$ of dimension $D = 2 n$ where $2 \leq n \leq 5$ for the (V+A)-channel, and $2 \leq n \leq 7$ for the V-channel data. In our previous works [1,2], only the (V+A)-channel data was analysed. In this work, the analysis of a new set of V-channel data is performed as well. Further, a renormalon-motivated construction of the $D = 0$ part of the Adler function is improved in the $u = 3$ infrared renormalon sector, by involving the recently known information on the two principal noninteger values $k^{(j)} = γ^{(1)} (O_{6}^{(j)}) / β_{0}$ of the effective leading-order anomalous dimensions. Additionally, the OPE of the Adler function has now the D=6 contribution with the principal anomalous dimension ( $\sim α_{s}^{k^{(1)}}$ ), and terms of higher dimension (with zero anomalous dimension). Cross-checks of the obtained extracted values of $α_{s}$ and of the condensates were performed by reproduction of the (central) experimental values of several double-pinched momenta $a^{(2, n)}$ . The averaged final extracted values of the (MSbar) coupling are: $α_{s} (m_{τ}^{2}) = 0.316 9_{- 0.0096}^{+ 0.0070}$ , corresponding to $α_{s} (M_{Z}^{2}) = 0.118 3_{- 0.0012}^{+ 0.0009}$ .
hep-phJ.Phys.G(2023)·28 citations
05*
Theory of Muon g-2
Bogdan Malaescu🇫🇷
The longstanding discrepancy between the measured and the predicted values of the anomalous magnetic moment of the muon, $a_{μ} = (g - 2) /2$ , is one of the most intriguing potential hints of new physics in particle physics. After a brief introduction, the status of the theoretical prediction of g-2 is presented, with some focus on the contributions yielding the dominant uncertainties. The status of the comparison with the experimental measurement is then discussed.
hep-phhep-exJPS Conf.Proc.(2022)·1 citation
06*
The Proton Gluon Distribution from the Color Dipole Picture
G. R. Boroun🇮🇷 · M. Kuroda🇯🇵 · Dieter Schildknecht🇩🇪
Employing the representation of the experimental data on deep inelastic electron-proton scattering (DIS) in the color-dipole picture (CDP), we determine the gluon distribution of the proton at small Bjorken $x$ . At sufficiently large momentum transfer, $Q^{2}$ , the extracted gluon distribution fulfills the standard evolution equation for the proton structure function. For low values of $Q^{2}$ , e.g. for $Q^{2} = 1.9 GeV^{2}$ , the evolution equation for the proton structure function is violated. The standard procedure of adopting a low- $Q^{2}$ starting scale for the extraction of the gluon density is questionable and requires further investigations.
hep-phEur.Phys.J.Plus(2025)·14 citations
07*
Open Bottom Mesons and Upsilon States in Hot Magnetized Strange Hadronic Matter
Amal Jahan C.S. · Amruta Mishra🇮🇳
The masses of open bottom mesons ( $B$ ( $B^{+}$ , $B^{0}$ ), $B ˉ$ ( $B^{-}$ , $B^{0} ˉ$ ), $B_{s}$ ( $B_{s}^{0}$ , $B_{s}^{0} ˉ$ )) and upsilon states ( $Υ (1 S)$ , $Υ (2 S)$ , $Υ (3 S)$ , $Υ (4 S)$ , and $Υ (1 D)$ ) are investigated in the isospin asymmetric strange hadronic medium at finite temperature in the presence of strong magnetic fields using a chiral effective Lagrangian approach. For charged baryons, the magnetic field introduces contribution from Landau energy levels. The masses of the open bottom mesons get modified through their interactions with the baryons and the scalar mesons, which undergo modifications in a magnetized medium. The charged open bottom mesons have additional positive mass shifts due to Landau quantization in the presence of the magnetic field. The medium mass shift of the upsilon states originates from the modification of the gluon condensates simulated by the variation of dilaton field ( $χ$ ) and a quark mass term in the magnetized medium. The open bottom mesons and upsilon states experience a mass drop in the magnetized medium. The masses of these mesons initially increase with a rise in temperature, and beyond a high value of temperature, their masses are observed to drop. When the temperature is below 90 MeV, the in-medium masses of the mesons increase with an increase in the magnetic field. However, at high temperatures (T $>$ 90 MeV), the masses are observed to drop with an increase in the magnetic field. The dominant in-medium effects are the density effects, which can have observable effects in asymmetric heavy-ion collisions planned at compressed baryonic matter experiments at FAIR at the future facility of GSI.
hep-phnucl-thIJMPE(2022)·5 citations
08*
Signature of a light charged Higgs boson from top quark pairs at the LHC
YaLu Hu🇨🇳 · ChunHao Fu🇨🇳 · Jun Gao🇨🇳
The charged Higgs boson is a smoking gun of extensions of the standard model with multiple Higgs-doublets, and has been searched for at various collider experiments. In this paper, we study signature of a light charged Higgs boson produced by top quark pairs at the LHC, with subsequent three-body decays into a W boson and a pair of bottom quarks. Cross sections on final states of two W bosons plus four bottom quarks have been measured by the ATLAS collaboration at the LHC 13 TeV. We reinterpret the experimental data under the scenario of a light charged Higgs boson, and find improved agreements. We obtain the first limit from LHC direct searches on the total branching ratio of the three-body decay, $B r (t \to H^{+} b) \times B r (H^{+} \to W^{+} b b ˉ)$ , and the strongest direct constraints on the parameter space of a class of type-I two-Higgs-Doublet models.
hep-phhep-exPRD(2022)·6 citations
09*
Semi-Annihilation of Fermionic Dark Matter
Priyotosh Bandyopadhyay🇮🇳 · Debajyoti Choudhury🇮🇳 · Divya Sachdeva🇫🇷
The continued non-observation of events emanating from dark matter (DM) annihilations in various direct and indirect detection experiments calls into question the mechanism for determining the relic density of a weakly interacting massive particle. However, if the relic density is determined primarily by a semi-annihilation process, as opposed to the usual annihilation, this tension can be ameliorated. Here, we investigate a Z3 symmetric effective field theory incorporating a fermionic dark matter that semi-annihilates to right-handed neutrinos (RHN). The dynamics of the RHN and the impact of its late decays are also scrutinised while obtaining the correct DM relic. Finally, indirect detection bounds on the semi-annihilation cross-sections are drawn from the gamma-ray observations in the direction of Dwarf Spheroidal Galaxies (Fermi-LAT), and including the projections obtained for the H.E.S.S. and the CTA detectors.
hep-phPRD(2023)·10 citations
10*
Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media
Rouzbeh Modarresi Yazdi🇨🇦 · Shuzhe Shi🇨🇦 · Charles Gale🇨🇦 · Sangyong Jeon🇨🇦
Energetic partons traveling in a strongly interacting medium lose energy by emitting radiation and through collisions with medium constituents. Non-perturbative, next-to-leading order and leading order collision kernels are implemented within AMY-McGill formalism. The resulting gluon emission rates are then evaluated and compared by considering scattering occurring in a brick of quark-gluon plasma, as well as in a realistic simulation of Pb-Pb, collisions at $s = 2.76$ ATeV using MARTINI. We find that the variations in quenching of hard partons resulting from using different kernels can be important, depending on the overall value of the strong coupling constant $α_{s}$ .
hep-phnucl-thPRC(2022)·16 citations
11*
Relativistic spin dynamics for vector mesons
Xin-Li Sheng🇨🇳 · Lucia Oliva🇮🇹 · Zuo-Tang Liang🇨🇳 · Qun Wang🇨🇳 · Xin-Nian Wang🇺🇸
We propose a relativistic theory for spin density matrices of vector mesons based on Kadanoff-Baym equations in the closed-time-path formalism. The theory puts the calculation of spin observables such as the spin density matrix element $ρ_{00}$ for vector mesons on a solid ground. Within the theory we formulate $ρ_{00}$ for $ϕ$ mesons into a factorization form in separation of momentum and space-time variables. We argue that the main contribution to $ρ_{00}$ at lower energies should be from the $ϕ$ fields that can polarize the strange quark and antiquark in the same way as electromagnetic fields. The key observation is that there is correlation inside the $ϕ$ meson wave function between the $ϕ$ field that polarizes the strange quark and that polarizes the strange antiquark. This is reflected by the fact that the contributions to $ρ_{00}$ are all in squares of fields which are nonvanishing even if the fields may strongly fluctuate in space-time. The fluctuation of strong force fields can be extracted from $ρ_{00}$ of quarkonium vector mesons as links to fundamental properties of quantum chromodynamics.
hep-phnucl-thPRD(2024)·71 citations
12*
Identical particle and lepton mass effects in the decay $H \to Z^{*} (\to τ^{+} τ^{-}) + Z^{*} (\to τ^{+} τ^{-})$
Stefan Groote🇪🇪 · Lauri Kaldamäe🇪🇪 · Maria Naeem🇪🇪
We consider identical particle and lepton mass effects in the cascade decay $H \to Z^{*} (\to τ^{+} τ^{-}) + Z^{*} (\to τ^{+} τ^{-})$ . Since the scale of the problem is set by the off-shellness $p_{a}^{2}$ and $p_{b}^{2}$ of the respective gauge bosons in the limits ( $4 m_{τ}^{2} \leq p_{a}^{2}, p_{b}^{2} \leq (m_{H} - 2 m_{τ})^{2}$ ) and not by $m_{H}^{2}$ , lepton mass effects are nonnegligible in particular close to the threshold of the off-shell decays. We calculate the rates and single angle decay distributions and compare them with the corresponding rates and single angle decay distributions for the nonidentical particle decays $H \to Z^{*} (\to e^{+} e^{-}) + Z^{*} (\to μ^{+} μ^{-})$ involving negligible lepton masses.
hep-phBraz.J.Phys.(2023)·2 citations
13*
Instability of the Electroweak Vacuum in Starobinsky Inflation
Qiang Li🇯🇵 · Takeo Moroi🇯🇵 · Kazunori Nakayama🇯🇵 · Wen Yin🇯🇵
We study the stability of the electroweak vacuum during and after the Starobinsky inflation, assuming the existence of the non-minimal Higgs coupling to the Ricci scalar. In the Starobinsky inflation, there exists $R^{2}$ term (with $R$ being the Ricci scalar), which modifies the evolution equation of the Higgs field. We consider the case that the non-minimal coupling is sizable so that the quantum fluctuation of the Higgs field is suppressed and that the Higgs amplitude is settled near the origin during the inflation. In such a case, the Higgs amplitude may be amplified in the preheating epoch after inflation because of the parametric resonance due to the non-minimal coupling. We perform a detailed analysis of the evolution of the Higgs field in the preheating epoch by a numerical lattice simulation and derive an upper bound on the non-minimal coupling constant $ξ$ in order to realize the electroweak vacuum in the present universe. We find that the upper bound on $ξ$ in the Starobinsky inflation model is more stringent than that in conventional inflation models without the $R^{2}$ term.
hep-phastro-ph.COJHEP(2022)·12 citations
14*
Transverse momentum weighted Sivers asymmetries in SIDIS and Drell-Yan processes at COMPASS
Shi-Chen Xue🇨🇳 · Shuailiang Yang🇨🇳 · Xiaoyu Wang🇨🇳 · De-Min Li🇨🇳 · Zhun Lu🇨🇳
We investigate the transverse momentum weighted Sivers asymmetries in the processes with transversely polarized proton target, including the $\frac{P _{h T}}{z M _{p}} sin (ϕ_{h} - ϕ_{S})$ weighted asymmetry in charged hadron production in semi-inclusive deeply inelastic scattering (SIDIS) and the $\frac{q _{T}}{M _{p}} sin (ϕ_{S})$ weighted asymmetry in $π^{-} p$ Drell-Yan process. Due to the integration over the transverse momentum, the weighted asymmetries can be expressed as the product of the transverse-moments of the transverse momentum dependent (TMD) parton distribution functions (PDFs) and fragmentation functions (FFs). Using the parametrization for the Sivers function of the proton, the unpolarized PDFs of proton and pion, and the unpolarized FF of charged hadron, we present the numerical calculation for weighted Sivers asymmetries in SIDIS and Drell-Yan processes at the kinematics of COMPASS, and compare them with experimental data. We find that our prediction on the weighted Sivers asymmetry in SIDIS process is in agreement with the recent COMPASS measurement. Due to the relatively large uncertainties of the preliminary data from COMPASS Drell-Yan program, high precision experimental data are needed to test the sign change property of the Sivers function between SIDIS and Drell-Yan processes and to constrain the sea quark Sivers function.
hep-phPLB(2024)·0 citations
15*
Doubly-charmed baryon production in $Z$ boson decay
Xuan Luo🇨🇳 · Ying-Zhao Jiang🇨🇳 · Gui-Yuan Zhang🇨🇳 · Zhan Sun🇨🇳
In this paper, we carry out a detailed study of doubly-charmed baryon production in $Z$ boson decay, on the basis of the nonrelativistic QCD factorization. With the inclusion of the di-quark states $(cc) [^{3} S_{1}]_{3 ˉ}$ and $(cc) [^{1} S_{0}]_{6}$ , the branching ratio of $B_{Z \to Ξ_{cc} + X}$ is predicted to be of the $1 0^{- 5}$ order, indicating its experimental measurability. By comparing to the $Λ_{c}^{+}$ yield in $Z$ decay, we predict $R_{Ξ_{cc}^{+}} (= \frac{Γ ( Z \to Ξ _{cc}^{+} ) \times B ( Ξ _{cc}^{+} \to Λ _{c}^{+} K ^{-} π ^{+} )}{Γ ( Z \to Λ _{c}^{+} )}) = (0.8 5_{- 0.07}^{+ 0.10}) \times 1 0^{- 4}$ and $R_{Ξ_{cc}^{++}} (= \frac{Γ ( Z \to Ξ _{cc}^{++} ) \times B ( Ξ _{cc}^{++} \to Λ _{c}^{+} K ^{-} π ^{+} π ^{+} )}{Γ ( Z \to Λ _{c}^{+} )}) = (1.7 0_{- 0.14}^{+ 0.20}) \times 1 0^{- 4}$ , which are at clear variance with the SELEX measurements but comparable with the values given by the LHCb and Belle collaborations.
hep-ph11 citations
16*
LHC search strategy for squarks in higgsino-LSP scenarios with leptons and $b$ -jets in the final state
Ernesto Arganda🇪🇸 · Antonio Delgado🇺🇸 · Roberto A. Morales🇦🇷 · Mariano Quirós🇪🇸
The higgsino Lightest Supersymmetric Particle (LSP) scenario opens up the possibility of decays of strongly produced particles to an intermediate neutralino, due to the Yukawa-suppressed direct decays to the higgsino. Those decays produce multijet signals with a Higgs or a $Z$ boson being produced in the decay of the intermediate neutralino to the LSP. In this paper we study the discovery prospects of squarks that produce $b$ -jets and leptons in the final state. Our collider analysis provides signal significances at the 3 $σ$ level for luminosities of 1 ab $^{- 1}$ , and at the 5 $σ$ level if we project these results for 3 ab $^{- 1}$ .
hep-phhep-exParticles(2022)·1 citation
17*
Towards a minimal $S U (5)$ model
Ilja Doršner🇭🇷
I briefly outline the most prominent features of a novel $S U (5)$ unification model proposal. The particle content of the model comprises $5_{H}$ , $2 4_{H}$ , $3 5_{H}$ , $5_{F}_{i}$ , $1 0_{F}_{i}$ , $1 5_{F}$ , $15_{F}$ , and $2 4_{V}$ , where subscripts $H$ , $F$ , and $V$ denote whether a given representation contains scalars, fermions, or gauge bosons, respectively, while $i = 1, 2, 3$ . The model employs all possible interaction terms, as allowed by the Lorentz group, the $S U (5)$ gauge symmetry, and the aforementioned particle content, to generate the Standard Model fermion masses through three different mechanisms. It also connects the neutrino mass generation mechanism to the experimentally observed mass disparity between the down-type quarks and charged leptons. The minimal structure of the model requires $2 4_{H}$ and $5_{H}$ not only to break $S U (5)$ and $S U (3) \times S U (2) \times U (1)$ gauge groups, respectively, but to accomplish one additional task each. The model furthermore predicts that neutrinos are strictly Majorana fields, that one neutrino is purely a massless particle, and that neutrino masses are of normal ordering. The experimental bound on the $p \to π^{0} e^{+}$ lifetime limit, in conjunction with the prediction of the model for the gauge mediated proton decays, implies that there are four new scalar multiplets at or below a $120$ \,TeV mass scale if these multiplets are mass degenerate. If these multiplets are not mass degenerate, the quoted limit then applies, for all practical purposes, to the geometric mean of their masses. The scalars in question transform as $(1, 3, 0)$ , $(8, 1, 0)$ , $(3, 3, - 2/3)$ , and $(6, 2, 1/6)$ under the Standard Model gauge group $S U (3) \times S U (2) \times U (1)$ with calculable couplings to the Standard Model fields.
hep-phhep-ex0 citations
18*
Muon $g - 2$ anomaly and non-locality
Antonio Capolupo🇮🇹 · Gaetano Lambiase🇮🇹 · Aniello Quaranta🇮🇹
We show that the discrepancy between the observed value of the muon anomalous moment and the standard model prediction can be explained in the framework of nonlocal theories. We compute the leading order and next to leading order nonlocal correction to the anomalous magnetic moment $α_{N L}$ and we find that it depends on the nonlocality scale $M_{f}$ and the fermion mass $m_{f}$ as $α_{N L} \propto m_{f}^{2} / M_{f}^{2}$ . Such a dependence of the anomalous magnetic momentum allows to explain, in a flavor-blind nonlocality scale, why the observed anomalous magnetic moment of the electron is much closer to the standard model prediction, and permits to predict a large anomaly that should exist for the $τ$ particle. We also determine the lower bounds on the nonlocality scale, for both flavor-blind and flavor-dependent scenarios.
hep-phPLB(2022)·20 citations
19*
$D$ -wave excited $cs c ˉ s ˉ$ tetraquark states with $J^{P C} = 1^{++}$ and $1^{+-}$
Zi-Yan Yang🇨🇳 · Wei Chen🇨🇳
We study the mass spectra of D-wave excited $cs c ˉ s ˉ$ tetraquark states with $J^{P C} = 1^{++}$ and $1^{+-}$ in both symmetric $6_{cs} \otimes 6 ˉ_{c ˉ s ˉ}$ and antisymmetric $3 ˉ_{cs} \otimes 3_{c ˉ s ˉ}$ color configurations by using the QCD sum rule method. We construct the D-wave diquark-antidiquark type of $cs c ˉ s ˉ$ tetraquark interpolating currents in various excitation structures with $(L_{λ}, L_{ρ} {l_{ρ_{1}}, l_{ρ_{2}}}) = (2, 0 {0, 0}), (1, 1 {1, 0}), (1, 1 {0, 1}), (0, 2 {1, 1}), (0, 2 {2, 0}), (0, 2 {0, 2})$ . Our results support to interpret the recently observed $X (4685)$ resonance as a D-wave $cs c ˉ s ˉ$ tetraquark state with $J^{P C} = 1^{++}$ in the $(2, 0 {0, 0})$ or $(0, 2 {2, 0})$ excitation mode, although some other possible excitation structures cannot be excluded exhaustively within theoretical errors. Moreover, our results provide a mass relation $6_{ρρ} < 3_{λλ} < 3_{λ ρ} < 3_{ρρ}$ and $6_{ρρ} < 3_{λλ} < 6_{λλ} < 3_{ρρ}$ for the positive and negative $C$ -parity D-wave $cs c ˉ s ˉ$ tetraquarks, respectively. We suggest searching for these possible D-wave $cs c ˉ s ˉ$ tetraquarks in both the hidden-charm channels $J / ψ ϕ$ , $η_{c} ϕ$ and open-charm channels such as $D_{s} D ˉ_{s}^{*}$ , $D_{s} D ˉ_{s 1}^{*}$ and so on.
hep-phhep-exhep-latCPC(2023)·3 citations
20*
Production of double heavy quarkonium at super $Z$ factory
Qi-Li Liao🇨🇳 · Jun Jiang🇨🇳 · Yu-Han Zhao🇨🇳
Within the color singlet model, we calculate the exclusive production of double charmonia, double bottomonia, and double $B_{c}$ mesons at future super $Z$ factory. The two heavy quarkonia or $B_{c}$ 's are either two S-wave Fock states ( $^{1} S_{0},^{3} S_{1}$ ), or one S-wave and one P-wave states ( $^{1} P_{1},^{3} P_{J} (J = 0, 1, 2)$ ). The top three $Z^{0}$ propagated channels in cross sections for double charmonia are $J / ψ + h_{c}, η_{c} + χ_{c 2}$ , and $η_{c} + χ_{c 0}$ . For double bottomonia, they are $η_{b} + Υ, Υ + χ_{b 2}$ , and $Υ + Υ$ . For double $B_{c}$ mesons, they are $B_{c}^{*+} + B_{c}^{*-}$ , $B_{c}^{*+} + χ_{b c 2}^{-}$ , and $η_{b c}^{+} + B_{c}^{*-}$ . The cross sections of double $B_{c}$ mesons are roughly one order of magnitude larger than those of the double bottomonia, and two orders of magnitude larger than those of the double charmonia. To make it helpful for experimental study, we present the total cross sections $σ$ as functions of CM energy $s$ , $σ$ as functions of the renormalization scale $μ$ , the angle distributions $d σ / d cos θ$ , and the $p_{T}$ distributions $d σ / d p_{t}$ . The uncertainties come from the varying masses of constituent heavy quarks bring up to 20% corrections. We also find that the initial state radiation can bring about 30% $\sim$ 40% suppresions when 1\% $m_{Z}$ energy is losing, and cross sections can increase by about $2 \sim 3$ times or decrease by an order of magnitude when adopting different potential models which becomes the major source of uncertainty. The numerical results show that it might be not optimistic for the experimental observation, but it is still far from excluded at the FCC-ee and also the CEPC running in the $Z$ factory mode.
hep-phEPJC(2024)·8 citations
21*
Correlation length of the angular mode for an approximate $U (1)$ symmetry during inflation
Chengcheng Han🇨🇳
It is known that a light scalar field obtains fluctuations in the de Sitter inflationary background. Such fluctuations could provide an initial condition for baryogenesis through the Affleck-Dine mechanism, where an approximate $U (1)_{B}$ symmetry is usually assumed. However, an interpretation of the baryon number generation in this way is strongly related to the correlation length of the angular mode. In this work, we calculate the correlation length of the angular mode for a model exhibiting an approximate $U (1)$ symmetry. We find that for a massive nearly non-interacting field, the correlation length of the angular mode is determined by the mass parameter of the model and it is similar to $H^{- 1} exp (H^{2} / m^{2})$ . Applying this result to baryogenesis via the Affleck-Dine mechanism with a stochastic origin, we find that only for $m ≪ O (0.1) H$ (assuming $N_{*} = 60$ ) can the correlation length of the baryon number density be much larger than our current horizon size, such that we live in the baryon-rich region. If this is not true, in the early time our universe would consist of numerous patches of baryon-rich and anti-baryon-rich regions with the average baryon number being nearly zero.
hep-phastro-ph.HEhep-thPLB(2023)·0 citations
22*
Dark Matter in a Singlet Extended Inert Higgs Doublet Model
Mohammed Omer Khojali🇸🇩 · Ammar Abdalgabar🇸🇦 · Amine Ahriche🇮🇹 · Alan S. Cornell🇿🇦
In this work, we consider an extension of the Standard Model (SM) with an inert Higgs doublet and a real scalar singlet, in order to address problems around the origin of dark matter (DM). In this model, the lightest among the CP-odd and CP-even neutral inert components plays the role of a DM candidate, where the model parameters are subject to many theoretical and experimental constraints. These constraints include vacuum stability, perturbativity, LEP negative searches, electroweak precision tests, Higgs di-photon, Higgs invisible and Higgs undetermined decays, DM relic density and DM direct detection bounds. Using these constraints, we find that the allowed parameter space for these models is quite sizeable and could be explored in upcoming collider and astrophysical searches.
hep-phPRD(2022)·9 citations
23*
Next-to-Leading Order (NLO) Perturbative Effects in QCD Sum-Rule Analyses of Light Tetraquark Systems: A Case Study in the Scalar-Isoscalar Channel
B.A. Cid-Mora🇩🇪 · T.G. Steele🇨🇦
QCD sum-rule mass predictions for tetraquark states provide insights on the interpretations and internal structure of experimentally-observed exotic mesons. However, the overwhelming majority of tetraquark QCD sum-rule analyses have been performed at leading order (LO), which raises questions about the underlying theoretical uncertainties from higher-loop corrections. The impact of next-to-leading order (NLO) perturbative effects are systematically examined in scalar ( $J^{P C} = 0^{++}$ ) isoscalar light-quark tetraquark systems where comprehensive LO sum-rule analyses have been performed and NLO perturbative corrections to the correlators have previously been calculated. Using the scalar-isoscalar state as a detailed case study to illustrate the differences between LO and NLO analyses, it is shown that NLO effects in individual Laplace sum-rules are numerically significant and have an important role in improving the reliability of the sum-rule analyses by widening the Borel window. However, ratios of sum-rules are found to be less sensitive to NLO effects with the additional advantage of cancelling the anomalous dimension that emerges from the NLO corrections. NLO mass predictions based on these sum-rule ratios are thus remarkably robust despite the slow perturbative convergence of the underlying correlator. The mass predictions $0.52 GeV < m_{σ} < 0.77 GeV$ for the lightest scalar-isoscalar $σ$ state are in good agreement with the four-quark interpretation of the $f_{0} (500)$ , and the relative coupling strengths of the $f_{0} (980)$ and $f_{0} (500)$ to the tetraquark current agree with the pattern found in chiral Lagrangian analyses. Effects of the $σ$ resonance width are studied for different models, including resonance shapes inspired by chiral Lagrangians.
hep-phNPA(2022)·8 citations
24*
Neutrino specific spin-3/2 dark matter
Ashok Goyal🇮🇳 · Mohammed Omer Khojali🇸🇩 · Mukesh Kumar🇿🇦 · Alan S. Cornell🇿🇦
In this paper we consider a spin- $\frac{3}{2}$ dark matter (DM) particle coupled to neutrinos as a viable candidate to produce the observed DM relic density through the thermal freeze-out mechanism. The couplings of DM to neutrinos is considered first in a most general dimension six effective field theory framework. We then consider two specific neutrino-portal models discussed in the literature. In the first model DM couples to the standard model neutrinos through mixing generated by a sterile pseudo-Dirac massive neutrino and the second model we consider is the widely studied $U (1)_{L_{μ} - L_{τ}}$ gauge symmetric model. For each of these models we explore the parameter space required to generate the observed relic density. The constraints on the parameters of these models from the existing and proposed neutrino experiments as well as from existing cosmological and astrophysical bounds are considered in the context of the relic density calculations.
hep-phEPJC(2022)·2 citations
25*
Laboratory constraints on ultralight axion-like particles from precision atomic spectroscopy
Joshua Berger🇺🇸 · Amit Bhoonah🇺🇸
Ultralight bosonic dark matter has come under increasing scrutiny as a dark matter candidate that has the potential to resolve puzzles in astronomical observation. We demonstrate that high-precision measurements of time variation in the frequency ratios of atomic transitions achieves leading sensitivity to ultralight axion-like particle dark matter at low masses. These bounds are the first laboratory-based bounds on this class of dark matter models. We propose further measurements that could enhance sensitivity to ultralight axion-like particles.
hep-phphysics.atom-ph7 citations
26*
High Energy Sphalerons for Baryogenesis at Low Temperatures
Joerg Jaeckel🇩🇪 · Wen Yin🇯🇵
We discuss baryogenesis in scenarios where the Universe is reheated to temperatures $≲ 100$ GeV by the decay of long-lived massive particles into energetic SM particles. Before its thermalization, the center-of-mass energy in collisions between such a particle and a particle from the ambient plasma can be higher than the typical sphaleron mass, even if the temperature of the plasma itself is much lower. Optimistic estimates for the high energy enhancement of the sphaleron cross section suggest that successful baryogenesis is possible for reheating temperatures as low as $0.1 - 1$ GeV. With a simple extension of the SM, sufficient baryon production can be achieved even if more pessimistic results for the sphaleron rate are correct. In both cases this scenario can be probed in collider and cosmic-ray experiments. We briefly discuss the possible origin of the required CP violation.
hep-phastro-ph.COhep-exPRD(2023)·19 citations
27*
High-Energy Astrophysical Neutrinos from Cosmic Strings
Cyril Creque-Sarbinowski🇺🇸 · Jeffrey Hyde🇺🇸 · Marc Kamionkowski🇺🇸
Cosmic strings that couple to neutrinos may account for a portion of the high-energy astrophysical neutrino (HEAN) flux seen by IceCube. Here, we calculate the observed spectrum of neutrinos emitted from a population of cosmic string loops that contain quasi-cusps, -kinks, or kink-kink collisions. We consider two broad neutrino emission models: one where these string features emit a neutrino directly, and one where they emit a scalar particle which then eventually decays to a neutrino. In either case, the spectrum of cosmic string neutrinos does not match that of the observed HEAN spectrum. We thus find that the maximum contribution of cosmic string neutrinos, through these two scenarios, to be at most $\sim 45$ % of the observed flux. However, we also find that the presence of cosmic string neutrinos can lead to bumps in the observed neutrino spectrum. Finally, for each of the models presented, we present the viable parameter space for neutrino emission.
hep-phastro-ph.HEPRD(2023)·10 citations
28*
BSM Targets at a "Target-less DUNE"
Vedran Brdar🇺🇸 · Bhaskar Dutta🇺🇸 · Wooyoung Jang🇺🇸 · Doojin Kim🇺🇸 · Ian M. Shoemaker🇺🇸 · Zahra Tabrizi🇺🇸 · Adrian Thompson🇺🇸 · Jaehoon Yu🇺🇸
In this work we demonstrate that a future accelerator-based neutrino experiment such as DUNE can greatly increase its sensitivity to a variety of new physics scenarios by operating in a mode where the proton beam impinges on a beam dump. We consider two new physics scenarios, namely light dark matter (LDM) and axion-like particles (ALPs) and show that by utilizing a dump mode at a DUNE-like experiment, unexplored new regions of parameter space can be probed with an exposure of only 3 months with half of its expected initial beam power. Specifically, target-less configuration of future high intensity neutrino experiments will probe the parameter space for thermal relic DM as well as the QCD axion (DFSZ and KSVZ). The strength of such configuration in the context of new physics searches stems from the fact that the neutrino flux is significantly reduced compared to that of the target, resulting in much smaller backgrounds from neutrino interactions. We have verified this in detail by explicitly computing neutrino fluxes which we make publicly available in order to facilitate further studies with a target-less configuration.
hep-phastro-ph.COhep-exPRD(2023)·22 citations
29*
An $A_{5}$ inverse seesaw model with perturbed golden ratio mixing
A. E. Cárcamo Hernández🇨🇱 · Ivo de Medeiros Varzielas🇵🇹
We propose a theory based on the $A_{5}$ discrete group which successfully accounts for lepton masses and mixings. In the proposed model, the neutrino masses arise from an inverse seesaw mechanism. The leptonic mixing consists in a perturbed golden ratio mixing pattern with a strong correlation arising between the leptonic mixing observables, which can be expressed as $θ_{13}$ predicting the other mixing angles and the Dirac CP phase.
hep-phNPB(2022)·4 citations
30*
Dissipative Dark Matter on FIRE: II. Observational signatures and constraints from local dwarf galaxies
Xuejian Shen🇺🇸 · Philip F. Hopkins🇺🇸 · Lina Necib🇺🇸 · Fangzhou Jiang🇺🇸 · Michael Boylan-Kolchin🇺🇸 · Andrew Wetzel🇺🇸
We analyze the first set of cosmological baryonic zoom-in simulations of galaxies in dissipative self-interacting dark matter (dSIDM). The simulations utilize the FIRE-2 galaxy formation physics with the inclusion of dissipative dark matter self-interactions modelled as a constant fractional energy dissipation ( $f_{diss} = 0.5$ ). In this paper, we examine the properties of dwarf galaxies with $M_{*} \sim 1 0^{5} - 1 0^{9} M_{⊙}$ in both isolation and within Milky Way-mass hosts. For isolated dwarfs, we find more compact galaxy sizes and promotion of stellar/neutral gas disk formation in dSIDM with $(σ / m) \leq 1 c m^{2} g^{- 1}$ but they are still consistent with observed galaxy sizes and masses. In addition, as a result of the steeper central density profiles developed in dSIDM, the sub-kpc circular velocities of isolated dwarfs in models with $(σ / m) \geq 0.1 c m^{2} g^{- 1}$ are enhanced by about a factor of two, which are still consistent with the measured stellar velocity dispersions of Local Group dwarfs but in tension with the HI rotation curves of more massive field dwarfs. Meanwhile, for satellites of the simulated Milky Way-mass hosts, the median circular velocity profiles are marginally affected by dSIDM physics, but dSIDM may help address the missing compact dwarf satellites in CDM. The number of satellites is slightly enhanced in dSIDM, but the differences are small compared with the large host-to-host variations. In conclusion, the dSIDM models with constant cross-section $(σ / m) ≳ 0.1 c m^{2} g^{- 1}$ (assuming $f_{diss} = 0.5$ ) are effectively ruled out in bright dwarfs ( $M_{halo} \sim 1 0^{11} M_{⊙}$ ) by circular velocity constraints. However, models with lower effective cross-sections (at this halo mass/velocity scale) are still viable and can give rise to non-trivial observable signatures.
↳ astro-ph.GAastro-ph.COhep-phApJ(2024)·33 citations
31*
Impact of nuclear deformation on collective flow observables in relativistic U+U collisions
Niseem Magdy🇺🇸
A Multi-Phase Transport (AMPT) model is used to investigate the efficacy of several flow observables to constrain the initial-state deformation of the Uranium nuclei in U $+$ U collisions at nucleon-nucleon center-of-mass energy $s_{N N}$ = 193 GeV. The multiparticle azimuthal cumulant method is used to investigate the sensitivity of (I) a set of quantities that are sensitive to both initial- and final-state effects as well as (II) a set of dimensionless quantities that are more sensitive to initial-state effects to the Uranium nuclei quadrupole shape deformation. We find that the combined use of the flow harmonics, flow fluctuations and correlations, linear and non-linear flow correlations to the quadrangular flow harmonic, and the correlations between elliptic flow and the mean-transverse momentum could serve to constrain the nuclear deformation of the Uranium nuclei. Therefore, a comprehensive set of measurements of such observables can provide a quantifying tool for the quadrupole shape deformation via data-model comparisons.
↳ nucl-thhep-phnucl-exEPJA(2023)·29 citations
32*
The European Muon Collaboration effect in Light-Front Hamiltonian Dynamics
Emanuele Pace (Rome Univ. "Tor Vergata")🇮🇹 · Matteo Rinaldi (Perugia Univ.)🇮🇹 · Giovanni Salme` (INFN - Rome)🇮🇹 · Sergio Scopetta (Perugia Univ.)🇮🇹
A rigorous light-front formalism for electron deep inelastic scattering on unpolarized nuclei, in Bjorken limit, is reported. It preserves Poincaré covariance, macroscopic locality, both number of particles and momentum sum rules. The scheme is applied to the A=3 iso-doublet, very relevant in view of the planned operation with unpolarized and polarized beams at the Electron-Ion Collider. At variance with previous light-front estimates, our procedure, including a realistic nuclear description and free-nucleon structure functions, predicts a sizeable European Muon Collaboration effect for $^{3}$ He. This will allow to analyze deviations from the proposed baseline in terms of genuine QCD effects. The extension to heavier nuclei is straightforward, although numerically challenging.
↳ nucl-thhep-phPLB(2023)·10 citations
33*
A graph model for the clustering of dark matter halos
Daneng Yang🇺🇸 · Hai-Bo Yu🇺🇸
We use network theory to study topological features in the hierarchical clustering of dark matter halos. We use public halo catalogs from cosmological N-body simulations and construct tree graphs that connect halos within main halo systems. Our analysis shows these graphs exhibit a power-law degree distribution with an exponent of $- 2$ , and possess scale-free and self-similar properties according to the criteria of graph metrics. We propose a random graph model with preferential attachment kernels, which effectively incorporate the effects of minor mergers, major mergers, and tidal stripping. The model reproduces the structural, topological properties of simulated halo systems, providing a new way of modeling complex gravitational dynamics of structure formation.
↳ astro-ph.COcond-mat.stat-mechhep-phPRResearch(2023)·4 citations
34*
A Challenge to the Standard Cosmological Model
Nathan Secrest🇺🇸 · Sebastian von Hausegger🇬🇧 · Mohamed Rameez🇮🇳 · Roya Mohayaee🇫🇷 · Subir Sarkar🇬🇧
We present the first joint analysis of catalogs of radio galaxies and quasars to determine if their sky distribution is consistent with the standard $Λ$ CDM model of cosmology. This model is based on the cosmological principle, which asserts that the universe is statistically isotropic and homogeneous on large scales, so the observed dipole anisotropy in the cosmic microwave background (CMB) must be attributed to our local peculiar motion. We test the null hypothesis that there is a dipole anisotropy in the sky distribution of radio galaxies and quasars consistent with the motion inferred from the CMB, as is expected for cosmologically distant sources. Our two samples, constructed respectively from the NRAO VLA Sky Survey and the Wide-field Infrared Survey Explorer, are systematically independent and have no shared objects. Using a completely general statistic that accounts for correlation between the found dipole amplitude and its directional offset from the CMB dipole, the null hypothesis is independently rejected by the radio galaxy and quasar samples with $p$ -value of $8.9 \times 1 0^{- 3}$ and $1.2 \times 1 0^{- 5}$ , respectively, corresponding to $2.6 σ$ and $4.4 σ$ significance. The joint significance, using sample size-weighted $Z$ -scores, is $5.1 σ$ . We show that the radio galaxy and quasar dipoles are consistent with each other and find no evidence for any frequency dependence of the amplitude. The consistency of the two dipoles improves if we boost to the CMB frame assuming its dipole to be fully kinematic, suggesting that cosmologically distant radio galaxies and quasars may have an intrinsic anisotropy in this frame.
↳ astro-ph.COgr-qchep-phApJL(2022)·199 citations
35*
Fluctuational electrodynamics in and out of equilibrium
Iver Brevik🇳🇴 · Boris Shapiro🇮🇱 · Mário Silveirinha🇵🇹
Dispersion forces between neutral material bodies are due to fluctuations of the polarization of the bodies. For bodies in equilibrium these forces are often referred to as Casimir-Lifshitz forces. For bodies in relative motion, in addition to the Casimir-Lifshitz force, a lateral frictional force ("quantum friction", in the zero temperature limit) comes into play. The widely accepted theory of the fluctuation induced forces is based on the "fluctuational electrodynamics" , when the Maxwell equations are supplemented by random current sources responsible for the fluctuations of the medium polarization. The first part of our paper touches on some conceptual issues of the theory, such as the dissipation-less limit and the link between Rytov's approach and quantum electrodynamics. We point out the problems with the dissipation-less plasma model (with its unphysical double pole at zero frequency) which still appears in the literature. The second part of the paper is devoted to "quantum friction", in a broad sense, and it contains some novel material. In particular, it is pointed out that in weakly dissipative systems the friction force may not be a stationary process. It is shown, using an "exact" (nonpertubative) quantum treatment that under appropriate conditions, an instability can occur when the kinetic energy (due to the relative motion between the bodies) is transformed into coherent radiation, exponentially growing in intensity (the instability gets eventually limited by non-linear effects). We also discuss a setup when the two bodies are at rest but a constant electric current is flowing in one of the bodies. One may say that only the electron component of one body is dragged with respect to the other body, unlike the usual setup when the two bodies are in relative motion. Clearly there are differences in the frictional forces between the two setups.
↳ quant-phcond-mat.mes-hallcond-mat.stat-mechhep-ph+1Int.J.Mod.Phys.A(2022)·18 citations
36*
Black hole production, eternal inflation, and information in quasi-de Sitter space
Min-Seok Seo🇰🇷
When the slow-roll parameter $ϵ_{H}$ is smaller than $H^{2} / M_{Pl}^{2}$ , the quantum fluctuations of the inflaton after the horizon crossing are large enough to realize eternal inflation. Whereas they do not generate a sufficient amount of density fluctuation of the inflaton to produce the black hole in quasi-de Sitter space, they can also generate the sizeable density fluctuation of the radiation when the number of degrees of freedom increases rapidly in time, as predicted by the distance conjecture. We argue that the condition that the density fluctuation of the radiation is not large enough to produce the black hole until the end of inflation is equivalent to the no eternal inflation condition. When the radiation emitted by the horizon does not produce the black hole, even if the number of degrees of freedom increases in time, the information paradox does not arise for $ϵ_{H}$ larger than $1 0^{- 7} (H^{2} / M_{Pl}^{2})$ and time scale shorter than $1 0^{4} (M_{Pl} / H^{2})$ . Regardless of the presence of the information paradox, a static observer cannot retrieve a sufficient amount of information, which is consistent with the complementarity.
↳ hep-thgr-qchep-phJCAP(2022)·5 citations
37*
$T_{cc}^{+} (3875)$ relevant $D D^{*}$ scattering from $N_{f} = 2$ lattice QCD
Siyang Chen🇨🇳 · Chunjiang Shi🇨🇳 · Ying Chen · Ming Gong🇨🇳 · Zhaofeng Liu🇨🇳 · Wei Sun🇨🇳 · Renqiang Zhang🇨🇳
The $S$ -wave $D D^{*}$ scattering in the isospin $I = 0, 1$ channels is studied in $N_{f} = 2$ lattice QCD at $m_{π} \approx 350$ MeV. It is observed that the $D D^{*}$ interaction is repulsive in the $I = 1$ channel when the $D D^{*}$ energy is near the $D D^{*}$ threshold. In contrast, the $D D^{*}$ interaction in the $I = 0$ channel is definitely attractive in a wide range of the $D D^{*}$ energy. This is consistent with the isospin assignment $I = 0$ for $T_{cc}^{+} (3875)$ . By analyzing the components of the $D D^{*}$ correlation functions, it turns out that the quark diagram responsible for the different properties of $I = 0, 1$ $D D^{*}$ interactions can be understood as the charged $ρ$ meson exchange effect. This observation provides direct information on the internal dynamics of $T_{cc}^{+} (3875)$ .
↳ hep-lathep-exhep-phPLB(2022)·91 citations
38*
Characterizing the post-inflationary reheating history, Part II: Multiple interacting daughter fields
Stefan Antusch🇨🇭 · Kenneth Marschall🇨🇭 · Francisco Torrenti🇨🇭
We characterize the post-inflationary dynamics of an inflaton $ϕ$ coupled to multiple interacting daughter fields $X_{n}$ ( $n = 1, \dots N_{d}$ ) through quadratic-quadratic interactions $g_{n}^{2} ϕ^{2} X_{n}^{2}$ . We assume a monomial inflaton potential $V (ϕ) \propto ∣ ϕ ∣^{p}$ ( $p \geq 2$ ) around the minimum. By simulating the system in 2+1-dimensional lattices, we study the post-inflationary evolution of the energy distribution and equation of state, from the end of inflation until a stationary regime is achieved. We show that in this scenario, the energy transferred to the daughter field sector can be larger than $50%$ , surpassing this way the upper bound found previously for single daughter field models. In particular, for $p \geq 4$ the energy at very late times is equally distributed between all fields, and only $100/ (N_{d} + 1) %$ of the energy remains in the inflaton. We also consider scenarios in which the daughter fields have scale-free interactions $λ_{nm} X_{n}^{2} X_{m}^{2}$ , including the case of quartic daughter field self-interactions (for $n = m$ ). We show that these interactions trigger a resonance process during the non-linear regime, which in the single daughter field case already allows to deplete more than $50%$ of the energy from the inflaton for $p \geq 4$ .
↳ astro-ph.COhep-phhep-thJCAP(2023)·14 citations
39*
Speed of sound in dense strong-interaction matter
Jens Braun🇩🇪 · Andreas Geißel🇩🇪 · Benedikt Schallmo🇩🇪
We study the speed of sound in strong-interaction matter at zero temperature and in density regimes which are expected to be governed by the presence of a color-superconducting gap. At (very) high densities, our analysis indicates that the speed of sound approaches its asymptotic value associated with the non-interacting quark gas from below, in agreement with first-principles studies which do not take the presence of a color-superconducting gap into account. Towards lower densities, however, the presence of a gap induces an increase of the speed of sound above its asymptotic value. Importantly, even if gap-induced corrections to the pressure may appear small, we find that derivatives of the gap with respect to the chemical potential can still be sizeable and lead to a qualitative change of the density dependence of the speed of sound. Taking into account constraints on the density dependence of the speed of sound at low densities, our general considerations suggest the existence of a maximum in the speed of sound. Interestingly, we also observe that specific properties of the gap can be related to characteristic properties of the speed of sound which are indirectly constrained by observations.
↳ nucl-thhep-phSciPost Phys.Core(2024)·35 citations
40*
The unambiguous Lorentz-violating induced terms
A. R. Vieira🇧🇷
In this work, we show that surface terms, which map dependence on regularization, can be fixed requiring momentum routing invariance of tadpoles or diagrams with more external legs. This condition makes the Lorentz-violating terms induced by quantum corrections determined and uniques.
↳ hep-thhep-phProceedings of the Ninth Meeting on CPT a…·0 citations
41*
Observing nulling of primordial correlations via the 21 cm signal
Shyam Balaji🇫🇷 · H. V. Ragavendra🇮🇳 · Shiv K. Sethi🇮🇳 · Joseph Silk🇫🇷 · L. Sriramkumar🇮🇳
The 21cm line emitted by neutral hydrogen (HI) during the Dark Ages carries imprints of pristine primordial correlations. In models of inflation driven by a single, canonical scalar field, we show that a phase of ultra-slow-roll can lead to a null in all the primordial correlations at a specific wavenumber $k_{dip}$ . We consider scenarios wherein the null in the correlations occurs over wavenumbers $1 ≲ k_{dip} ≲ 10 Mpc^{- 1}$ , and examine the prospects of detecting such a damping in the HI signal due to the nulls at the level of power and bi-spectra in future observational missions.
↳ astro-ph.COhep-phPRL(2022)·26 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.