Thu·May 2, 2024Thursday·May 2, 2024

1. 01*

   Transmon Qubit Constraints on Dark Matter-Nucleon Scattering

   Anirban Das🇰🇷 · Noah Kurinsky🇺🇸 · Rebecca K. Leane🇺🇸

   We recently pointed out that power measurements of single quasiparticle devices can be used to detect dark matter. These devices have the lowest known energy thresholds, far surpassing standard direct detection experiments, requiring energy deposition above only about an meV. We calculate dark matter induced quasiparticle densities in transmon qubits, and use the latest transmon qubit measurements that provide one of the strongest existing lab-based bounds on dark matter-nucleon scattering below about 100 MeV. We strongly constrain sub-component dark matter, using both a dark matter population thermalized in the Earth as well as the dark matter wind from the Galactic halo. We demonstrate future potential sensitivities using devices with low quasiparticle densities.

   hep-phastro-ph.COhep-exJHEP(2024)·24 citations
2. 02*

   Sterile neutrino dark matter within the $\nu$SMEFT

   Kaori Fuyuto🇺🇸 · Jacky Kumar🇺🇸 · Emanuele Mereghetti🇺🇸 · Stefan Sandner🇺🇸 · Chen Sun🇺🇸

   Sterile neutrinos with masses at the $\mathrm{keV}$ scale and mixing to the active neutrinos offer an elegant explanation of the observed dark matter (DM) density. However, the very same mixing inevitably leads to radiative photon emission and the non-observation of such peaked $X$-ray lines rules out this minimal sterile neutrino DM hypothesis. We show that in the context of the Standard Model effective field theory with sterile neutrinos ($\nu$SMEFT), higher dimensional operators can produce sterile neutrino DM in a broad range of parameter space. In particular, $\nu$SMEFT interactions can open the large mixing parameter space due to their destructive interference, through operator mixing or matching, in the $X$-ray emission. We also find that, even in the zero mixing limit, the DM density can always be explained by $\nu$SMEFT operators. The testability of the studied $\nu$SMEFT operators in searches for electric dipole moments, neutrinoless double beta decay, and pion decay measurements is discussed.

   hep-phastro-ph.COJHEP(2024)·11 citations
3. 03*

   Primordial black hole probes of heavy neutral leptons

   Valentina De Romeri🇪🇸 · Yuber F. Perez-Gonzalez🇬🇧 · Agnese Tolino🇪🇸

   Primordial black holes (PBH), while still constituting a viable dark matter component, are expected to evaporate through Hawking radiation. Assuming the semi-classical approximation holds up to near the Planck scale, PBHs are expected to evaporate by the present time, emitting a significant flux of particles in their final moments, if produced in the early Universe with an initial mass of $\sim 10^{15}$ g. These ``exploding'' black holes will release a burst of Standard Model particles alongside any additional degrees of freedom, should they exist. We explore the possibility that heavy neutral leptons (HNL), mixing with active neutrinos, are emitted in the final evaporation stages. We perform a multimessenger analysis. We calculate the expected number of active neutrinos from such an event, including contributions due to the HNL decay for different assumptions on the mixings, that could be visible in IceCube. We also estimate the number of gamma-ray events expected at HAWC. By combining the two signals, we infer sensitivities on the active-sterile neutrino mixing and on the sterile neutrino mass. We find that, for instance, for the scenario where $U_{\tau 4}\ne 0$, IceCube and HAWC could improve current constraints by a few orders of magnitude, for HNLs masses between 0.1 - 1 GeV, and a PBH explosion occurring at a distance of $\sim 10^{-4}$ pc from Earth.

   hep-phastro-ph.HEJCAP(2025)·11 citations
4. 04*

   An analytical formula for signal optimization in stimulated photon-photon scattering setup with three laser pulses

   A.V. Berezin🇷🇺 · A.M. Fedotov🇷🇺

   We consider a setup to detect stimulated photon-photon scattering using high-power lasers. Signal photons are emitted from an overlap of the incoming intense laser pulses focused in vacuum from three sides. We derive and justify a general approximate analytical formula for the angular distribution and total yield of such signal photons in terms of the parameters of the incoming pulses, including their intensity, carrier frequencies, durations, focusing, polarizations, mutual orientation and overlap. Using the obtained formula a parametric study of the signal is carried out and optimization is performed.

   hep-phphysics.opticsPRD(2024)·9 citations
5. 05*

   Supernova limits on 'QCD axion-like particles'

   Alessandro Lella🇮🇹 · Eike Ravensburg🇸🇪 · Pierluca Carenza🇸🇪 · M. C. David Marsh🇸🇪

   In this paper, we explore the phenomenology of massive Axion-Like Particles (ALPs) coupled to quarks and gluons, dubbed 'QCD ALPs', with an emphasis on the associated low-energy observables. ALPs coupled to gluons and quarks not only induce nuclear interactions at scales below the QCD-scale, relevant for ALP production in supernovae (SNe), but naturally also couple to photons similarly to the QCD-axion. We discuss the link between the high-energy formulation of ALP theories and their effective couplings with nucleons and photons. The induced photon coupling allows ALPs with masses $m_a\gtrsim 1$ MeV to efficiently decay into photons, and astrophysical observables severely constrain the ALP parameter space. We show that a combination of arguments related to SN events rule out ALP-nucleon couplings down to $g_{aN}\gtrsim 10^{-11}-10^{-10}$ for $m_a\gtrsim 1$ MeV - a region of the parameter space that was hitherto unconstrained.

   hep-phastro-ph.HEPRD(2024)·39 citations
6. 06*

   Divergences in the effective loop interaction of the Chern-Simons bosons with leptons. The unitary gauge case

   Yuliia Borysenkova🇪🇸 · Volodymyr Gorkavenko🇺🇦 · Ivan Hrynchak🇺🇦 · Oleksandr Khasai🇺🇦 · Mariia Tsarenkova🇺🇦

   In this paper, we consider the extension of the Standard Model with Chern-Simons type interaction. There is a new vector massive boson (Chern-Simons bosons) in this extension. Using only three-particle dimension-4 interaction of the Chern-Simons bosons with vector bosons of the SM, we consider effective loop interaction of a new vector boson with leptons. We consider the renormalizability of this loop interaction and conclude that for the case of computation of loop diagrams in the unitary gauge, we can not get rid of the divergences in the effective interaction of the Chern-Simons bosons with leptons.

   hep-phUkr.J.Phys.(2024)·3 citations
7. 07*

   Doubly-Charm and Doubly-Bottom Pentaquark molecular States via the QCD sum rules

   Xiu-Wu Wang🇨🇳 · Zhi-Gang Wang🇨🇳

   In the present work, the doubly-charm and doubly-bottom pentaquark molecular states $D^{(\ast )}{\Sigma }_c^{(\ast )}$ and $B^{(\ast )}{\Sigma }_b^{(\ast )}$ are studied via the QCD sum rules. Sixteen color singlet-singlet type currents with the definite isospin-spin-parity $I{J}^P$ are constructed to interpolate the corresponding hadronic states with the same quantum numbers. The masses and pole residues of those doubly-heavy pentaquark molecular states are calculated, the results show that their masses are all below the corresponding meson-baryon thresholds, which means that they are possible bound states, not resonant states, moreover, the possible decay channels for the doubly-charm molecular states are given.

   hep-phInt.J.Mod.Phys.A(2024)·11 citations
8. 08*

   Spectrum of Hybrid Charmonium, Bottomonium and $B_c$ Mesons by Power Series Method

   Nosheen Akbar · Zeeshan Ali · Saadia Arshad

   Power series method (PSM) is revisited to find the masses of S, P, and D states of conventional charmonium ($c\overline{c}$), bottomonium ($b\overline{b}$), and $B_c$ ($\overline{b}c$) mesons by assuming the solution of N-dimensional radial Schrodinger equation in series form. An extension in the potential model is proposed by fitting it with lattice data to study the hybrid mesons. The proposed potential model is used to find the masses of hybrid $c\overline{c}$, $b\overline{b}$, and $\overline{b}c$ mesons by applying the power series method. Calculated results are compared with theoretical findings and available experimental data. Our results can be helpful for the investigation of newly experimentally discovered charmonium, bottomonium, and $B_c$ states.

   hep-phEur.Phys.J.Plus(2024)·3 citations
9. 09*

   Study of vector and axial-vector form factors and the decay parameters for the semileptonic hyperon decays

   Harleen Dahiya🇮🇳 · Aarti Girdhar🇮🇳 · Monika Randhawa🇮🇳

   Using the standard parametrization of the dipole form, we have studied the vulnerability of $Q^2$ on the vector form factors ($f_i^{B_i{B}_f}(Q^2)$) and axial-vector form factors ($g_i^{B_i{B}_f}(Q^2)$), $i=1,2,3$ computed for the semileptonic $B_i\to B_{f}l\bar{\nu }$ decays for hyperons in the framework of chiral constituent quark model ($\chi$CQM). Both, strangeness changing as well as strangeness conserving decays have been examined. We also present the dependence of the ratio of hyperon semileptonic decay constants $g_1(Q^2)/f_1(Q^2)$ for these decays. Further, we calculate the CKM matrix elements $V_{ud}$ from strangeness conserving and $V_{us}$ from strangeness changing hyperon decays.

   hep-phIndian J.Phys.(2024)·2 citations
10. 10*

    Transverse distortion and single-spin asymmetries for low-lying octet baryons

    Navpreet Kaur🇮🇳 · Harleen Dahiya🇮🇳

    Being the fountainhead of transverse distortion and asymmetries in accordance to $‘‘SSA=GPD\ast FSI"$, we study the spin flip generalized parton distribution. We demonstrate this transverse deformation by using the quark-scalar diquark model and unveil a comparison among the low-lying strange baryons for distinct feasible combinations of quark-diquark pairs. Final-state interaction originating the correlation of a target spin and a virtual photon to the generated pion plane in semi-inclusive deep inelastic scattering has also been analyzed.

    hep-phInt.J.Mod.Phys.A(2024)·1 citation
11. 11*

    Quark spin-orbit correlations in spin-0 and spin-1 mesons using the light-front quark model

    Ritwik Acharyya🇮🇳 · Satyajit Puhan🇮🇳 · Harleen Dahiya🇮🇳

    We have investigated the spin-orbital angular momentum correlations for the active quark inside the light and heavy mesons for both the spin-0 and spin-1 cases. These correlations can be derived from the generalised transverse momentum dependent distributions (GTMDs) as well as the generalised parton distributions (GPDs). We employ the overlap representation of light-front wave functions in the light-front quark model (LFQM) to calculate our analytical results. The dependence of spin-orbit correlations (SOCs) on the longitudinal momentum fraction $x$ as well as the transverse momentum dependence ${\mathbf{k}}_{\perp }$ has been graphically presented. Even though the SOCs have already been studied for the spin-0 pions and kaons in other approaches, no calculations for the other light and heavy spin-0 mesons have been reported in literature. Further, the correlations for any of the light and heavy spin-1 mesons have been studied for the first time in the present work.

    hep-phPRD(2024)·15 citations
12. 12*

    A first-order deconfinement phase transition in the early universe and gravitational waves

    Fei Gao🇨🇳 · Sichun Sun🇨🇳 · Graham White🇬🇧

    We clarify the conditions of the cosmic quantum chromodynamics (QCD) first-order phase transition in the early universe by carefully distinguishing the chiral and deconfinement phase transitions. While the chiral one with light quarks at zero chemical potential is unlikely to be first order based on the recent lattice QCD calculations, the latter one can be naturally extended with one extra rolling scalar to be first order. The argument is also valid for the dark QCD theory with arbitrary $N_c$ with a wide range of phase transition temperatures, which can be from hundreds of MeV up to beyond TeV. Notably, here we derive the general formula for the deconfinement phase transition potential of SU($N_c$) gauge theory characterized by the Polyakov loop. With the effective potential in hand, the gravitational wave spectrum is then determined via the sound shell model, which then enables us to give for the first time the quantitative analysis of the gravitational wave signals coming from the QCD deconfinement phase transition and awaits the check from future space interferometers.

    hep-phastro-ph.COhep-thnucl-th6 citations
13. 13*

    Study of $B_{(s)}$ meson decays to $D_0^{\ast }(2300),D_{s0}^{\ast }(2317),D_{s1}(2460)$ and $D_{s1}(2536)$ within the covariant light-front approach

    You-Ya Yang🇨🇳 · Zhi-Qing Zhang🇨🇳 · Hao Yang🇨🇳 · Zhi-Jie Sun🇨🇳 · Ming-Xuan Xie🇨🇳

    In this work, we investigate the form factors of the transitions $B_{(s)}\to D_0^{\ast }(2300),D_{s0}^{\ast }(2317),$ $D_{s1}(2460)$ and $D_{s1}(2536)$ in the covariant light-front quark model (CLFQM), where these final states are considered as P-wave excited charmed mesons. In order to obtain the form factors for the physical transition processes, we need to extend these form factors from the space-like region to the time-like region. The $q^2$-dependence for each transition form factor is also plotted. Then, combined with those form factors, the branching ratios of the two-body nonleptonic decays $B_{(s)}\to D_{(s)0}^{\ast }(2300,2317)M,D_{s1}(2460,2536)M$ with $M$ being a light pseudoscalar (vector) meson or a charmed meson are calculated by considering the QCD radiative corrections to the hadronic matrix elements with the QCD factorization approach. Most of our predictions are comparable to the results given by other theoretical approaches and the present available data.

    hep-phPRD(2024)·6 citations
14. 14*

    Isospin violation effect and three-body decays of the $T_{cc}^{+}$ state

    Zhi-Feng Sun🇨🇳 · Ning Li🇨🇳 · Xiang Liu🇨🇳

    In this work, we make a study of $T_{cc}^{+}$ state observed by the LHCb collaboration in 2021. In obtaining the effective potentials using the One-Boson-Exchange Potential Model we use an exponential form factor, and find that in the short and medium range, the contributions of the $\pi$, $\rho$ and $\omega$ exchanges are comparable while in the long range the pion-exchange contribution is dominant. Based on the assumption that $T_{cc}^{+}$ is a loosely bound state of $D^{\ast }D$, we focus on its three-body decay using the meson-exchange method. Considering that the difference between the thresholds of $D^{\ast +}{D}^0$ and $D^{\ast 0}{D}^{+}$ is even larger than the binding energy of $T_{cc}^{+}$, the isospin-breaking effect is amplified by the small binding energy of $T_{cc}^{+}$. Explicitly including such an isospin-breaking effect we obtain, by solving the Schrödinger equation, that the probability of the isoscalar component is about $91\%$ while that of the isovector component is around $9\%$ for $T_{cc}^{+}$. Using the experimental value of the mass of $T_{cc}^{+}$ as an input, we obtain the wave function of $T_{cc}^{+}$ and further obtain its width via the three-body hadronic as well as the radiative decays. The total width we obtain is in agreement with the experimental value of the LHCb measurement with a unitarised Breit-Wigner profile. Conversely, the current results support the conclusion that $T_{cc}^{+}$ is a hadronic molecule of $D^{\ast }D$.

    hep-phPRD(2024)·12 citations
15. 15*

    Two-loop mixed QCD-EW corrections to charged current Drell-Yan

    Tommaso Armadillo🇧🇪 · Roberto Bonciani🇮🇹 · Simone Devoto🇮🇹 · Narayan Rana🇮🇳 · Alessandro Vicini🇮🇹

    We present the two-loop mixed strong-electroweak virtual corrections to the charged current Drell-Yan process. The final-state collinear singularities are regularised by the lepton mass. The evaluation of all the relevant Feynman integrals, including those with up to two different internal massive lines, has been worked out relying on semi-analytical techniques, using complex-valued masses. We can provide, at any arbitrary phase-space point, the solution as a power series in the $W$-boson mass, around a reference value. Starting from these expansions, we can prepare a numerical grid for any value of the $W$-boson mass within their radius of convergence in a negligible amount of time.

    hep-phhep-exhep-thJHEP(2024)·15 citations
16. 16*

    Predictions for Composite Higgs models from gauge/gravity dualities

    Werner Porod🇩🇪

    Gauge/gravity dualities provide a very useful approach into solving strongly coupled systems. We apply this to Composite Higgs models and determine the mass hierarchies of the corresponding bound states. As a cross check we apply this to QCD and compare the results to existing lattice calculations for which we find good agreement. We then focus on a particular example whose phenomenology has recently been studied in the literature in a generic way and outline first phenomenological implications of our findings for the spectrum.

    hep-phPoS(2024)·0 citations
17. 17*

    Tomography of flavoured leptogenesis with primordial blue gravitational waves

    Marco Chianese🇮🇹 · Satyabrata Datta🇨🇳 · Rome Samanta🇮🇹 · Ninetta Saviano🇮🇹

    We explore a scenario where an early epoch of matter domination is driven by the mass scale $M_N$ of the right-handed neutrinos, which also characterizes the different flavour regimes of leptogenesis. Such a matter-domination epoch gives rise to peculiar spectral imprints on primordial Gravitational Waves (GWs) produced during inflation. We point out that the characteristic spectral features are detectable in multiple frequency bands with current and future GW experiments in case of Blue GWs (BGWs) described by a power-law with a positive spectral index $(n_T>0)$ and an amplitude compatible with Cosmic Microwave Background (CMB) measurements at the CMB scale. We find that the three-flavour leptogenesis regime with $M_N\lesssim 10^9\mathrm{GeV}$ imprints BGWs more prominently than the two-flavour and one-flavour regimes characterized by a higher right-handed neutrino mass scale. In particular, a two-flavour (three-flavour) leptogenesis regime is expected to leave distinct imprints in the mHz-Hz ($\mu$Hz-mHz) band. Moreover, we translate the current Big Bang Nucleosynthesis (BBN) and LIGO limits on the GW energy density into constraints on the flavour leptogenesis parameter space for different GW spectral indices $n_T$. We provide a rigorous statistical analysis of how the future GW detectors would be conjointly able to distinguish the flavour regimes. Interestingly, the scenario also offers unique GW signals testable in the next LIGO run with a correlated signature in the PTA frequency band with an amplitude comparable to the one expected from supermassive black holes.

    hep-phastro-ph.COJCAP(2024)·21 citations
18. 18*

    Could SBND-PRISM probe Lepton Flavor Violation?

    Gustavo F. S. Alves🇧🇷 · Pedro A. N. Machado🇺🇸 · Renata Zukanovich Funchal🇧🇷

    We investigate the possibility of using the Short-Baseline Near Detector (SBND) at Fermilab to constrain lepton flavor violating decays of pions and kaons. We study how to leverage SBND-PRISM, the use of the neutrino beam angular spread to mitigate systematic uncertainties, to enhance this analysis. We show that SBND-PRISM can put stringent limits on the flavor violating branching ratios $\mathrm{BR}({\pi }^{+}\to {\mu }^{+}{\nu }_{\mathrm{e}})=8.9\times 10^{-4}$, $\mathrm{BR}({\mathrm{K}}^{+}\to {\mu }^{+}{\nu }_{\mathrm{e}})=3.2\times 10^{-3}$, improving previous constraints by factors 9 and 1.25, respectively. We also estimate the SBND-PRISM sensitivity to lepton number violating decays, $\mathrm{BR}({\pi }^{+}\to {\mu }^{+}{\overline{\nu }}_{\mathrm{e}})=2.1\times 10^{-3}$ and $\mathrm{BR}({\mathrm{K}}^{+}\to {\mu }^{+}{\overline{\nu }}_{\mathrm{e}})=7.4\times 10^{-3}$, though not reaching previous BEBC limits. Last, we identify several ways how the SBND collaboration could improve this analysis.

    hep-phPRD(2024)·5 citations
19. 19*

    Hydrodynamical simulations of merging galaxy clusters: giant dark matter particle colliders, powered by gravity

    Ellen L. Sirks🇦🇺 · David Harvey🇨🇭 · Richard Massey🇬🇧 · Kyle A. Oman🇬🇧 · Andrew Robertson🇺🇸 · Carlos Frenk🇬🇧 · Spencer Everett🇺🇸 · Ajay S. Gill🇨🇦 · David Lagattuta🇬🇧 · Jacqueline McCleary🇺🇸

    Terrestrial particle accelerators collide charged particles, then watch the trajectory of outgoing debris - but they cannot manipulate dark matter. Fortunately, dark matter is the main component of galaxy clusters, which are continuously pulled together by gravity. We show that galaxy cluster mergers can be exploited as enormous, natural dark matter colliders. We analyse hydrodynamical simulations of a universe containing self-interacting dark matter (SIDM) in which all particles interact via gravity, and dark matter particles can also scatter off each other via a massive mediator. During cluster collisions, SIDM spreads out and lags behind cluster member galaxies. Individual systems can have quirky dynamics that makes them difficult to interpret. Statistically, however, we find that the mean or median of dark matter's spatial offset in many collisions can be robustly modelled, and is independent of our viewing angle and halo mass even in collisions between unequal-mass systems. If the SIDM cross-section were sigma/m = 0.1cm^2/g = 0.18 barn/GeV, the 'bulleticity' lag would be ~5 percent that of gas due to ram pressure, and could be detected at 95 percent confidence in weak lensing observations of ~100 well-chosen clusters.

    ↳ astro-ph.COhep-phhep-thMNRAS(2024)·17 citations
20. 20*

    Superluminal matter waves

    J.P. Palastro🇺🇸 · D. Ramsey🇺🇸 · M. Formanek🇨🇿 · J. Vieira · A. Di Piazza🇺🇸

    The Dirac equation has resided among the greatest successes of modern physics since its emergence as the first quantum mechanical theory fully compatible with special relativity. This compatibility ensures that the expectation value of the velocity is less than the vacuum speed of light. Here, we show that the Dirac equation admits free-particle solutions where the peak amplitude of the wavefunction can travel at any velocity, including those exceeding the vacuum speed of light, despite having a subluminal velocity expectation value. The solutions are constructed by superposing basis functions with correlations in momentum space. These arbitrary velocity wavefunctions feature a near-constant profile and may impact quantum mechanical processes that are sensitive to the local value of the probability density as opposed to expectation values.

    ↳ quant-phhep-phPRResearch(2024)·2 citations
21. 21*

    Particle production from gluon-nucleon interactions in relativistic heavy ion collisions

    Yong-Ping Fu🇨🇳 · Fei-Jie Huang🇨🇳 · Qi-Hui Chen🇨🇳

    We propose a particle production mechanism analogous to the particle photoproduction processes, arising from the gluon-nucleon interactions in relativistic heavy ion collisions. The comparison is made on the effect of the gluon-nucleon interactions on the photon production in Au+Au collisions at $\sqrt{s_{NN}}=$200 GeV and Pb+Pb collisions at $\sqrt{s_{NN}}=$2.76 TeV. The numerical results indicate that as the collision energy increases, the contribution of gluon-nucleon interactions becomes more prominent.

    ↳ nucl-thhep-ph0 citations
22. 22*

    Four loop renormalization in six dimensions using Forcer

    J.A. Gracey🇬🇧

    We employ the Forcer algorithm to renormalize a variety of six dimensional field theories to four loops. In order to achieve this we construct the Forcer master integrals in six dimensions from their four dimensional counterparts by using the Tarasov method. The $ϵ$ expansion of the six dimensional masters are determined up to weight $9$ where $d$ $=$ $6$ $-$ $2ϵ$. By applying the Forcer routine the four loop MSbar renormalization of ${\varphi }^3$ theory is reproduced before gauge theories are considered. The renormalization of these theories is also determined in the MOMt scheme. For instance the absence of ${\zeta }_4$ and ${\zeta }_6$ is confirmed to five loops in the MOMt renormalization of ${\varphi }^3$ theory. We also evaluate the three loop $\beta$-function of the gauge coupling in six dimensional QCD.

    ↳ hep-thhep-phPRD(2024)·5 citations
23. 23*

    Using non-DESI data to confirm and strengthen the DESI 2024 spatially-flat $w_0{w}_a$CDM cosmological parameterization result

    Chan-Gyung Park🇰🇷 · Javier de Cruz Perez🇪🇸 · Bharat Ratra🇺🇸

    We use a combination of Planck cosmic microwave background (CMB) anisotropy data and non-CMB data that include Pantheon+ type Ia supernovae (SNIa), Hubble parameter [$H(z)$], growth factor ($f{\sigma }_8$) measurements, and a collection of baryon acoustic oscillation (BAO) data, but not recent DESI 2024 BAO measurements, to confirm the DESI 2024 (DESI+CMB+PantheonPlus) data compilation support for dynamical dark energy with an evolving equation of state parameter $w(z)=w_0+w_{a}z/(1+z)$. From our joint compilation of CMB and non-CMB data, in a spatially-flat cosmological model, we obtain $w_0=-0.850\pm 0.059$ and $w_a=-0.59_{-0.22}^{+0.26}$ and find that this dynamical dark energy is favored over a cosmological constant by $\sim 2\sigma$. Our data constraints on the flat $w_0{w}_a$CDM parameterization are slightly more restrictive than the DESI 2024 constraints, with the DESI 2024 and our values of $w_0$ and $w_a$ differing by $-0.27\sigma$ and $0.44\sigma$, respectively. Our data compilation slightly more strongly favors the flat $w_0{w}_a$CDM model over the flat $\Lambda$CDM model than does the DESI 2024 data compilation. We note that our CMB and non-CMB data $w_0{w}_a$CDM parameterization cosmological constraints are discrepant at 2.7$\sigma$, a little larger than the 1.9$\sigma$ discrepancy between DESI DR1 BAO and CMB data flat $\Lambda$CDM model cosmological constraints. We also show that if we remove the Pantheon+ SNIa contribution from the non-CMB data, for the $w_0{w}_a$CDM parameterization we still find tension between P18 and non-CMB data (2.5$\sigma$) and P18+lensing and non-CMB data (2.4$\sigma$). Even after the exclusion of Pantheon+ SNIa data the $\Lambda$CDM model is still disfavoured at $\sim 2\sigma$ c.l.

    ↳ astro-ph.COgr-qchep-phhep-thPRD(2024)·177 citations
24. 24*

    Ultralight Primordial Black Holes

    Stefano Profumo🇺🇸

    The fate of ultralight black holes depends on whether or not evaporation stops at or around the Planck scale. If evaporation stops, the general expectation is that a population of Planck-scale will be left over, possibly including a significant fraction of electrically charged relics. If evaporation does not stop, a runaway "explosion" would occur, with significant and potentially detectable high-energy emission. Here, I review both possibilities, with an emphasis on current status and future detection prospects.

    ↳ astro-ph.HEgr-qchep-ph12 citations
25. 25*

    Simple fits for the neutrino luminosities from protoneutron star cooling

    Giuseppe Lucente (1,2,3,4)🇮🇹 · Malte Heinlein (5,6)🇩🇪 · H.-Thomas Janka (5)🇩🇪 · Alessandro Mirizzi (1,2) ((1) University of Bari, (2) INFN Bari, (3) KIP, Heidelberg, (4) ITP, Heidelberg, (5) MPI for Astrophysics, Garching, (6) TUM School of Nat. Sciences, Garching)🇮🇹

    We propose a simple fit function, $L_{{\nu }_i}(t)=C{t}^{-\alpha }{e}^{-(t/\tau {)}^n}$, to parametrize the luminosities of neutrinos and antineutrinos of all flavors during the protoneutron star (PNS) cooling phase at post-bounce times $t\gtrsim 1$ s. This fit is based on results from a set of neutrino-hydrodynamics simulations of core-collapse supernovae in spherical symmetry. The simulations were performed with an energy-dependent transport for six neutrino species and took into account the effects of convection and muons in the dense and hot PNS interior. We provide values of the fit parameters $C$, $\alpha$, $\tau$, and $n$ for different neutron star masses and equations of state as well as correlations between these fit parameters. Our functional description is useful for analytic supernova modeling, for characterizing the neutrino light curves in large underground neutrino detectors, and as a tool to extract information from measured signals on the mass and equation of state of the PNS and on secondary signal components on top of the PNS's neutrino emission.

    ↳ astro-ph.HEhep-phPRD(2024)·9 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.