Fri·Mar 17, 2023Friday·March 17, 2023

1. 01*

   Putting all the X in one basket: Updated X-ray constraints on sub-GeV Dark Matter

   Marco Cirelli🇫🇷 · Nicolao Fornengo🇮🇹 · Jordan Koechler🇫🇷 · Elena Pinetti🇺🇸 · Brandon M. Roach🇺🇸

   Sub-GeV dark matter particles can annihilate or decay producing e^\pm pairs which upscatter the low-energy photon fields in the Galaxy and generate an X-ray emission (via the Inverse Compton effect). Using X-ray data from XMM-Newton, INTEGRAL, NuSTAR and Suzaku, we derive new constraints on this class of dark matter (DM). For annihilating DM, they are significant for m_DM > 100 MeV, and dominant if DM is p-wave annihilating. For decaying DM, they are the most stringent to date in the range m_DM ~400 MeV - 3 GeV$.

   hep-phastro-ph.COastro-ph.HEJCAP(2023)·83 citations
2. 02*

   Probing Cosmological Particle Production and Pairwise Hotspots with Deep Neural Networks

   Taegyun Kim🇺🇸 · Jeong Han Kim🇰🇷 · Soubhik Kumar🇺🇸 · Adam Martin🇺🇸 · Moritz Münchmeyer🇺🇸 · Yuhsin Tsai🇺🇸

   Particles with masses much larger than the inflationary Hubble scale, $H_I$, can be pair-produced non-adiabatically during inflation. Due to their large masses, the produced particles modify the curvature perturbation around their locations. These localized perturbations eventually give rise to localized signatures on the Cosmic Microwave Background (CMB), in particular, pairwise hotspots (PHS). In this work, we show that Convolutional Neural Networks (CNN) provide a powerful tool for identifying PHS on the CMB. While for a given hotspot profile a traditional Matched Filter Analysis is known to be optimal, a Neural Network learns to effectively detect the large variety of shapes that can arise in realistic models of particle production. Considering an idealized situation where the dominant background to the PHS signal comes from the standard CMB fluctuations, we show that a CNN can isolate the PHS with $\mathcal{O}(10)\%$ efficiency even if the hotspot temperature is $\mathcal{O}(10)$ times smaller than the average CMB fluctuations. Overall, the CNN search is sensitive to heavy particle masses $M_0/H_I=\mathcal{O}(200)$, and constitutes one of the unique probes of very high energy particle physics.

   hep-phastro-ph.COPRD(2023)·8 citations
3. 03*

   Top quark production through flavor violating neutral currents within the 2HDM type-III

   Melina Gómez-Bock🇲🇽 · Wendy Gonzalez-Olivares🇲🇽 · Martin Hentschinski🇲🇽 · Alfonso Rosado🇲🇽 · Sebastian Rosado-Navarro🇲🇽

   We explore the parameter space for processes with fermionic flavor violation within the 2HDM type III, processes of Flavor Changing Neutral Currents are present at LO as dynamics beyond the Standard Model are included. We analyze the possible Yukawa couplings beyond the SM involving the quark top, as the experimental signatures would be a clear signal to conclude about the model. The processes we analyzed are same sign top pair production at the $pp$ collisions, and single top quark production in $ep$ collisions, through DIS. To examine the scenarios that could exhibit such exotic events, we perform a scan in the parameter space to determine the observation possibilities for FCNC. We show the results considering the model parameters, coming from modified Yukawa interactions, $|{\tilde{\chi }}_{ij}^f|$ of the order one. In addition we explore the order of magnitude of possible single top production via $\mu p$, at the proposed muon-proton collider. We found scattering values for these exotic processes of up to $\mathcal{O}(10^{-2})pb$.

   hep-phInt.J.Mod.Phys.A(2024)·2 citations
4. 04*

   The Sivers asymmetry in charged Kaon and $\Lambda$ hyperon produced SIDIS process at electron ion colliders

   Shuailiang Yang🇨🇳 · Jianxi Song🇨🇳 · Xiaoyu Wang🇨🇳 · De-Min Li🇨🇳 · Zhun Lu🇨🇳

   We investigate the single transverse-spin asymmetry with a $\sin ({\varphi }_h-{\varphi }_S)$ modulation in the charged Kaon produced and in $\Lambda$ hyperon produced SIDIS process within the theoretical framework of transverse momentum dependent (TMD) factorization at the next-to-leading-logarithmic order. The asymmetry is contributed by the convolution of Sivers function and the unpolarized fragmentation function $D_1$ for the produced hadron. The parametrization for the proton Qiu-Sterman function, which is closely related to the Sivers function, is adopted to numerically estimate the Sivers asymmetry at the kinematical region of Electron Ion Collider (EIC) and Electron Ion Collider in China (EicC). The TMD evolution of the TMD parton distribution functions are considered by employing the nonperturbative Sudakov form factor. It is found that the predicted Sivers asymmetries $A_{UT}^{\sin ({\varphi }_h-{\varphi }_S)}$ as functions of $x$, $z$ and $P_{hT}$ are sizable at the kinematical configurations of both EIC and EicC. The strange constituent of the produced charged Kaon and $\Lambda$ hyperon in the final state can be a promising probe of the sea quark Sivers function as well as the flavor dependence in the proton target. Therefore, it is important to utilize the future EIC facilities to constrain the sea quark distribution functions as well as the validity of the generalized universality of the Sivers function.

   hep-phEPJC(2023)·1 citation
5. 05*

   On the Importance of Three-Body Decays of Vector-Like Quarks

   Carlos Bautista🇧🇷 · Leonardo de Lima🇧🇷 · Ricardo D. Matheus🇧🇷 · Aurore Savoy-Navarro🇫🇷

   It is a common feature of vector-like extensions of the electroweak sector to have near degenerate states, such as electroweak doublets. In simplified models, it is usually assumed that these have decay widths saturated by two-body channels. As a consequence, experimental searches can be done focusing on only one of the states of the doublet. Taking as an example case the light exotic electroweak doublet present in the Minimal Composite Higgs Model, we show that including three-body decays in the pair production process makes this separation unfeasible, since both states of the doublet will be present and contribute significantly to the signal. In addition, by recasting present searches in multileptonic channels, with a simplified cut-and-count analysis, a relevant increase in discovery reach or exclusion potential is obtained; this indeed motivates a more detailed analysis. This study shows how an inclusive search strategy, taking into account both the near degeneracy and the presence of three-body decays, will have greater discovery power and be more natural from a model building perspective.

   hep-phhep-exJHEP(2023)·0 citations
6. 06*

   Collider constraints on electroweakinos in the presence of a light gravitino

   The GAMBIT Collaboration: Viktor Ananyev🇳🇴 · Csaba Balázs🇦🇺 · Ankit Beniwal🇬🇧 · Lasse Lorentz Braseth🇳🇴 · Andy Buckley🇬🇧 · Jonathan Butterworth🇬🇧 · Christopher Chang🇦🇺 · Matthias Danninger🇨🇦 · Andrew Fowlie🇨🇳 · Tomás E. Gonzalo🇩🇪 · Anders Kvellestad🇳🇴 · Farvah Mahmoudi🇫🇷 and 9 other authors

   Using the GAMBIT global fitting framework, we constrain the MSSM with an eV-scale gravitino as the lightest supersymmetric particle, and the six electroweakinos (neutralinos and charginos) as the only other light new states. We combine 15 ATLAS and 12 CMS searches at 13\,TeV, along with a large collection of ATLAS and CMS measurements of Standard Model signatures. This model, which we refer to as the $\tilde{G}$-EWMSSM, exhibits quite varied collider phenomenology due to its many permitted electroweakino production processes and decay modes. Characteristic $\tilde{G}$-EWMSSM signal events have two or more Standard Model bosons and missing energy due to the escaping gravitinos. While much of the $\tilde{G}$-EWMSSM parameter space is excluded, we find several viable parameter regions that predict phenomenologically rich scenarios with multiple neutralinos and charginos within the kinematic reach of the LHC during Run 3, or the High Luminosity LHC. In particular, we identify scenarios with Higgsino-dominated electroweakinos as light as 140 GeV that are consistent with our combined set of collider searches and measurements. The full set of $\tilde{G}$-EWMSSM parameter samples and GAMBIT input files generated for this work is available via Zenodo.

   hep-phEPJC(2023)·30 citations
7. 07*

   Introduction to Renormalization Theory and Chiral Gauge Theories in Dimensional Regularization with Non-Anticommuting ${\gamma }_5$

   Hermès Bélusca-Maïto🇭🇷 · Amon Ilakovac🇭🇷 · Paul Kühler🇩🇪 · Marija Ma{\dj}or-Božinović🇭🇷 · Dominik Stöckinger🇩🇪 · Matthias Weißwange🇩🇪

   This review provides a detailed introduction to chiral gauge theories, renormalization theory, and the application of dimensional regularization with the non-anticommuting BMHV scheme for ${\gamma }_5$. One goal is to show how chiral gauge theories can be renormalized despite the spurious breaking of gauge invariance and how to obtain the required symmetry-restoring counterterms. A second goal is to familiarize the reader with the theoretical basis of the renormalization of chiral gauge theories, the theorems that guarantee the existence of renormalized chiral gauge theories at all orders as consistent quantum theories. Relevant topics include BPHZ renormalization, Slavnov-Taylor identities, the BRST formalism and algebraic renormalization, as well as the theorems guaranteeing that dimensional regularization is a consistent regularization/renormalization scheme. All of these, including their proofs and interconnections, are explained and discussed in detail. Further, these theoretical concepts are illustrated in practical applications with the example of an Abelian and a non-Abelian chiral gauge theory. Not only the renormalization procedure for such chiral gauge theories is explained step by step, but also the results of all counterterms, including the symmetry-restoring ones, necessary for the consistent renormalization are explicitly provided.

   hep-phhep-thSymmetry(2023)·43 citations
8. 08*

   A stable supermassive charged gravitino?

   Krzysztof A. Meissner🇵🇱 · Hermann Nicolai🇩🇪

   Some time ago it was suggested that dark matter may consist in part of an extremely dilute gas of supermassive gravitinos with fractional charge 2$e$/3 \cite{MeissnerNicolai2019}. This scheme makes the definite (and falsifiable) prediction that massive gravitinos are the {\em only} new fermionic degrees of freedom beyond the known three generations of quarks and leptons of the Standard Model of Particle Physics. In this note we re-examine one special outlier event reported and subsequently discarded by the MACRO collaboration \cite{MACRO1} in the light of this proposal and point out the possibility of an alternative interpretation of this event supporting the above hypothesis, whose confirmation (or refutation) would, however, require an independent dedicated experimental effort.

   hep-phhep-th4 citations
9. 09*

   Probing the structure of ${\chi }_{c1}(3872)$ with photon transition form factors

   Izabela Babiarz🇵🇱 · Roman Pasechnik🇸🇪 · Wolfgang Schäfer🇵🇱 · Antoni Szczurek🇵🇱

   We propose to study the structure of the enigmatic ${\chi }_{c1}(3872)$ axial vector meson through its ${\gamma }_L^{\ast }\gamma \to {\chi }_{c1}(3872)$ transition form factor. We derive a light-front wave function representation of the form factor for the lowest $c\bar{c}$ Fock-state. We found that the reduced width of the state is well within the current experimental bound recently published by the Belle collaboration. This strongly suggests a crucial role of the $c\bar{c}$ Fock-state in the photon-induced production. Our results for the $Q^2$ dependence can be tested by future single tagged $e^{+}{e}^{-}$ experiments, giving further insights into the short-distance structure of this meson.

   hep-phPRD(2023)·11 citations
10. 10*

    Molecular dynamics analysis of particle number fluctuations in the mixed phase of a first-order phase transition

    Volodymyr A. Kuznietsov🇺🇦 · Oleh Savchuk🇺🇸 · Roman V. Poberezhnyuk🇺🇦 · Volodymyr Vovchenko🇺🇸 · Mark I. Gorenstein🇺🇦 · Horst Stoecker🇩🇪

    Molecular dynamics simulations are performed for a finite non-relativistic system of particles with Lennard-Jones potential. We study the effect of liquid-gas mixed phase on particle number fluctuations in coordinate subspace. A metastable region of the mixed phase, the so-called nucleation region, is analyzed in terms of a non-interacting cluster model. Large fluctuations due to spinodal decomposition are observed. They arise due to the interplay between the size of the acceptance region and that of the liquid phase. These effects are studied with a simple geometric model. The model results for the scaled variance of particle number distribution are compared with those obtained from the direct molecular dynamic simulations.

    hep-phPRC(2023)·7 citations
11. 11*

    Exploring SM-like Higgs Boson Production in Association with Single-Top at the LHC Within a 2HDM

    Ciara Byers🇬🇧 · Shubhani Jain🇬🇧 · Stefano Moretti🇬🇧 · Emmanuel Olaiya🇬🇧

    We investigate the possibility of detectable 2-Higgs Doublet Model (2HDM) type-II cross-sections at the High-Luminosity phase of the Large Hadron Collider (HL-LHC) for the production of the Standard Model (SM)-like Higgs boson ($h$) in association with a single top (anti)quark over the parameter space region corresponding to the so-called `wrong-sign solution' of the bottom (anti)quark Yukawa coupling. We isolate the latter by using the toolbox Magellan, which performs Markov Chain Monte Carlo (MCMC) scans in the presence of all current theoretical and experimental constraints, which relevance is accounted for accurately by using built-in Bayesian statistical methods. It is found that the allowed points in the 2HDM type-II parameter space of the aforementioned kind would not only provide inclusive rates considerably above those of the equivalent SM process but also distributions in several kinematical observables that are very different from the SM, both of which can help disentangle the SM from the 2HDM hypothesis. This difference is a consequence of the bottom-gluon fusion sub-process, which in the 2HDM becomes dominant over all others, with the latter remaining very close to the SM yields. We prove that this phenomenology would be observable at the HL-LHC for the illustrative example of $h$ to bottom-antibottom quark decays.

    hep-ph2 citations
12. 12*

    Magnetic fields in inhomogeneous axion stars

    Petr Akhmetiev🇷🇺 · Maxim Dvornikov (IZMIRAN)🇷🇺

    We study the time evolution of magnetic fields in various configurations of spatially inhomogeneous pseudoscalar fields, which are the coherent superposition of axions. The new induction equation for the magnetic field, which accounts for this inhomogeneity, is derived for such systems. Based on this equation, we study, first, the evolution of two Chern-Simons (CS) waves interacting with a linearly decreasing pseudoscalar field. The nonzero gradient of the pseudoscalar field results in the mixing between these CS waves. Then, we consider the problem in a compact domain, when an initial CS wave is mirror symmetric. In this situation, the inhomogeneity of a pseudoscalar field acts as the effective modification of the $\alpha$-dynamo parameter. Thus, we conclude that the influence of a spatially inhomogeneous pseudoscalar field on the magnetic field evolution strongly depends on the geometry of the system.

    hep-phhep-thmath.DGInt.J.Mod.Phys.D(2024)·5 citations
13. 13*

    CP Violation in a Model with Higgs Triplets

    Ting-Kuo Chen🇺🇸 · Cheng-Wei Chiang🇹🇼 · Kei Yagyu🇯🇵

    We discuss CP-violation in a model with a real and a complex isospin triplet Higgs fields without introducing any symmetries except for the electroweak gauge symmetry. This corresponds to the minimal extension of the Higgs sector with the following properties: (i) providing new source of CP violation, (ii) absence of quark flavor changing neutral currents at tree level, and (iii) enabling the electroweak rho parameter to be unity at tree level in the scenario without imposing any new symmetries. Our model can be regarded as the generalized version of the Georgi-Machacek model, in which the global $SU(2{)}_L\times SU(2{)}_R$ symmetry is explicitly broken due to CP-violating terms in the potential. We present analytic formulas for theoretical constraints from perturbative unitarity and vacuum stability as well as contributions to the electron electric dipole moment (EDM) and the neutron EDM from all the Barr-Zee type diagrams. We then examine the parameter space allowed by the constraints mentioned above and also those from the uniqueness of the vacuum, measurements at Tevatron and LHC by using \texttt{HEPfit} to perform a global parameter fit. We find that the decays of the two lightest extra neutral (singly-charged) scalars, $H_1$ and $H_2$ ($H_1^{\pm }$), into $hZ$ ($WZ$) can be significant at the same time under the constraints, which can serve as direct evidence of CP violation in our model, but not from models with multi-doublet extensions.

    hep-phhep-exJHEP(2023)·18 citations
14. 14*

    Strong decays of charmonium-like state Y(4230)

    Gurjav Ganbold🇷🇺 · M. A. Ivanov🇷🇺

    Strong decays of the charmonium-like state $Y(4320)$ have been studied in the framework of the covariant confined quark model. The resonance $Y$ has been interpreted as a four-quark state of the molecular type. We evaluate the hidden-charm decay width of $Y$ to a vector and a scalar, with the latter decaying subsequently to a pair of charged pseudoscalar states. The strong decay modes $Y\to {\pi }^{+}{\pi }^{-}J/\Psi$ and $Y\to K^{+}{K}^{-}J/\Psi$ have been studied by involving the scalar resonance state $f_0(980)$. We have calculated the fractal widths of the related strong decays and the branching ratio $\mathcal{B}(Y\to K^{+}{K}^{-}J/\Psi )$ / $\mathcal{B}(Y\to {\pi }^{+}{\pi }^{-}J/\Psi )$, recently determined by the BESIII collaboration. The estimated branching ratio and calculated fractal strong decay widths are in good agreement with the latest experimental data, favoring the molecular representation of the $Y(4320)$ state.

    hep-phEPJA(2024)·3 citations
15. 15*

    Earth tomography with supernova neutrinos at future neutrino detectors

    Rasmi Hajjar🇪🇸 · Olga Mena🇪🇸 · Sergio Palomares-Ruiz🇪🇸

    Earth neutrino tomography is a realistic possibility with current and future neutrino detectors, complementary to geophysics methods. The two main approaches are based on either partial absorption of the neutrino flux as it propagates through the Earth (at energies about a few TeV) or on coherent Earth matter effects affecting the neutrino oscillations pattern (at energies below a few tens of GeV). In this work, we consider the latter approach focusing on supernova neutrinos with tens of MeV. Whereas at GeV energies, Earth matter effects are driven by the atmospheric mass-squared difference, at energies below $\sim 100$ MeV, it is the solar mass-squared difference what controls them. Unlike solar neutrinos, which suffer from significant weakening of the contribution to the oscillatory effect from remote structures due to the neutrino energy reconstruction capabilities of detectors, supernova neutrinos can have higher energies and thus, can better probe the Earth's interior. We shall revisit this possibility, using the most recent neutrino oscillation parameters and up-to-date supernova neutrino spectra. The capabilities of future neutrino detectors, such as DUNE, Hyper-Kamiokande and JUNO are presented, including the impact of the energy resolution and other factors. Assuming a supernova burst at 10~kpc, we show that the average Earth's core density could be determined within $\lesssim 10\%$ at $1\sigma$ confidence level, being Hyper-Kamiokande, with its largest mass, the most promising detector to achieve this goal.

    hep-phastro-ph.EPPRD(2023)·15 citations
16. 16*

    Role of left-hand cut contributions on pole extractions from lattice data: Case study for $T_{cc}(3875{)}^{+}$

    Meng-Lin Du🇨🇳 · Arseniy Filin🇩🇪 · Vadim Baru🇩🇪 · Xiang-Kun Dong🇨🇳 · Evgeny Epelbaum🇩🇪 · Feng-Kun Guo🇨🇳 · Christoph Hanhart🇩🇪 · Alexey Nefediev🇸🇮 · Juan Nieves🇪🇸 · Qian Wang🇨🇳

    We discuss recent lattice data for the $T_{cc}(3875{)}^{+}$ state to stress, for the first time, a potentially strong impact of left-hand cuts from the one-pion exchange on the pole extraction for near-threshold exotic states. In particular, if the left-hand cut is located close to the two-particle threshold, which happens naturally in the $D{D}^{\ast }$ system for the pion mass exceeding its physical value, the effective-range expansion is valid only in a very limited energy range up to the cut and as such is of little use to reliably extract the poles. Then, an accurate extraction of the pole locations requires the one-pion exchange to be implemented explicitly into the scattering amplitudes. Our findings are general and potentially relevant for a wide class of hadronic near-threshold states.

    hep-phPRL(2023)·106 citations
17. 17*

    Stability of the embedded string in the $SU(N)\times U(1)$ Higgs model and its application

    Yukihiro Kanda🇯🇵 · Nobuhiro Maekawa🇯🇵

    Since it has been pointed out that physics beyond the Standard Model may be constrained by gravitational waves from cosmic strings, it has been more important to clarify in what cases cosmic strings are formed. We study the stability of the embedded string which is formed when $SU(N)\times U(1{)}_X$ gauge symmetries are broken to $SU(N-1)\times U(1{)}_Q$, and find that the stability condition can be determined by two mass ratios of the Higgs and massive gauge bosons, and does not explicitly depend on $N$. We also show that the result can be extended in supersymmetric models. In addition, we apply these results to several models and discuss the important feature of the Higgs to produce the embedded string. Although we find it difficult to be satisfied in normal realistic GUT models, it is possible if $SU(N)$ and $U(1{)}_X$ have different origins.

    hep-phPRD(2023)·4 citations
18. 18*

    Revisiting the Friedberg-Lee-Sirlin soliton model

    Julian Heeck🇺🇸 · Mikheil Sokhashvili🇺🇸

    Non-topological solitons are localized classical field configurations stabilized by a Noether charge. Friedberg, Lee, and Sirlin proposed a simple renormalizable soliton model in their seminal 1976 paper, consisting of a complex scalar field that carries the Noether charge and a real-scalar mediator. We revisit this model, point out commonalities and differences with Q-ball solitons, and provide analytic approximations to the underlying differential equations.

    hep-phhep-thnlin.SIEPJC(2023)·13 citations
19. 19*

    Master formulas for photon amplitudes in a combined constant and plane-wave background field

    Christian Schubert🇨🇿 · Rashid Shaisultanov🇨🇿

    The worldline formalism has previously been used for deriving compact master formulas for the QED $N$ - photon amplitudes in vacuum, in a constant field and in a plane-wave field. Here we carry this program one step further by deriving master formulas for the scalar and spinor QED $N$-photon amplitudes in the background of the "parallel" special case of a combined constant and plane-wave field.

    ↳ hep-thhep-phphysics.plasm-phPLB(2023)·15 citations
20. 20*

    UHECR Signatures and Sources

    Daniele Fargion🇮🇹 · Pier Giorgio De Sanctis Lucentini🇷🇺 · Maxim Y. Khlopov🇷🇺

    Abstract. We discuss recent results on the clustering, composition and distribution of Ultra-High Energy Cosmic Rays (UHECR) in the sky; from the energy of several tens of EeV in the dipole anisotropy, up to the highest energy of a few narrow clusters, those of Hot Spots. Following the early UHECR composition records deviations from proton, we noted that the UHECR events above 40 EeV can be made not just by any light or heavy nuclei, but mainly by the lightest ones as He,D, Li,Be. The remarkable Virgo absence and the few localized nearby extragalactic sources, such as CenA, NGC 253 and M82, are naturally understood: lightest UHECR nuclei cannot reach us from the Virgo distance of twenty Mpc, due to their nuclei fragility above a few Mpc distances. Their deflection and smearing in wide hot spots is better tuned to the lighter nuclei than to the preferred proton or heavy nuclei candidate courier. We note that these lightest nuclei still suffer of a partial photodistruction even from such close sources. Therefore, their distruption in fragments, within few tens EeV multiplet chain of events, have been expected and later on observed by Auger collaboration, nearly a decade ago. These multiplet presences, strongly correlate with the same CenA, NGC253 sources. The statistical weight of such correlation is reminded. We conclude that the same role of NGC 253 clustering at lower energies could also feed the Auger dipole anisotropy at lower energy ranges, integrated by nearest Vela, Crab, LMC and Cas A contributes. In our present UHECR model, based on lightest nuclei in local volumes of a few Mpcs, closest AGN, Star-Burst or very close SNR are superimposing their signals, frozen in different epochs, distances and directions, feeding small and wide anisotropy. Possible tests to confirm, or untangle the current model from alternative ones, are suggested and updated.

    ↳ astro-ph.HEastro-ph.COhep-phEPJ Web Conf.(2023)·2 citations
21. 21*

    Nuclear neutron radius and weak mixing angle measurements from latest COHERENT CsI and atomic parity violation Cs data

    M. Atzori Corona🇮🇹 · M. Cadeddu🇮🇹 · N. Cargioli🇮🇹 · F. Dordei🇮🇹 · C. Giunti🇮🇹 · G. Masia🇮🇹

    The COHERENT collaboration observed coherent elastic neutrino nucleus scattering using a 14.6 kg cesium-iodide (CsI) detector in 2017 and recently published the updated results before decommissioning the detector. Here, we present the legacy determination of the weak mixing angle and of the average neutron rms radius of ${}^{133}\mathrm{Cs}$ and ${}^{127}\mathrm{I}$ obtained with the full CsI dataset, also exploiting the combination with the atomic parity violation (APV) experimental result, that allows us to achieve a precision as low as $\sim$4.5% and to disentangle the contributions of the ${}^{133}\mathrm{Cs}$ and ${}^{127}\mathrm{I}$ nuclei. Interestingly, we show that the COHERENT CsI data show a 6$\sigma$ evidence of the nuclear structure suppression of the full coherence. Moreover, we derive a data-driven APV+COHERENT measurement of the low-energy weak mixing angle with a percent uncertainty, independent of the value of the average neutron rms radius of ${}^{133}\mathrm{Cs}$ and ${}^{127}\mathrm{I}$, that is allowed to vary freely in the fit. Additionally, we extensively discuss the impact of using two different determinations of the theoretical parity non-conserving amplitude in the APV fit. Our findings show that the particular choice can make a significant difference, up to 6.5% on $R_n$(Cs) and 11% on the weak mixing angle. Finally, in light of the recent announcement of a future deployment of a 10 kg and a $\sim$700 kg cryogenic CsI detectors, we provide future prospects for these measurements, comparing them with other competitive experiments that are foreseen in the near future.

    ↳ nucl-exhep-phnucl-thEPJC(2023)·36 citations
22. 22*

    Hydrodynamic Attractors in Ultrarelativistic Nuclear Collisions

    Jakub Jankowski🇵🇱 · Michał Spaliński🇵🇱

    One of the many physical questions that have emerged from studies of heavy-ion collisions at RHIC and the LHC concerns the validity of hydrodynamic modelling at the very early stages, when the Quark-Gluon Plasma system produced is still far from isotropy. In this article we review the idea of far-from-equilibrium hydrodynamic attractors as a way to understand how the complexity of initial states of nuclear matter is reduced so that a hydrodynamic description can be effective.

    ↳ nucl-thhep-phPPNP(2023)·50 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.