Wed·Oct 25, 2023Wednesday·October 25, 2023

1. 01*

   On Quark Substructures in an Inspired Unified Model

   Adil Belhaj🇲🇦 · Salah Eddine Ennadifi🇲🇦

   Motivated by the growing attention devoted to the Quantum Chromodynamics sector of the Standard Model, and the recent observations of non-standard hadronic states, a possible substructure of quarks $q_f\equiv C_{ij}|k_i{k}_j⟩$ in terms of four colorless bound particles "hyperparticles" is investigated in a $SO(10)$-inspired unified model. This aims to define a subtle structure of matter as well as an explanation of some particularities of quarks. Precisley, these hyperquarks $k_i$ are bound by a $SU(3{)}_h$ "hyperstrong force" under which they are assumed to be charged. Exploiting certain known data, the masses and the charges of such fundamental particles are discussed along with the emerged four extra quarks $q_f\equiv {\delta }_{ii}|k_i{k}_i⟩$ and three hyperweak bosons $W_h$.

   hep-phInt.J.Theor.Phys.(2025)·0 citations
2. 02*

   General Approach to Neutrino Mass Mechanisms with Sterile Neutrinos

   Yale Fan🇺🇸 · Anil Thapa🇺🇸

   We present a mathematical framework for constructing the most general neutrino mass matrices that yield the observed spectrum of light active neutrino masses in conjunction with arbitrarily many heavy sterile neutrinos, without the need to assume a hierarchy between Dirac and Majorana mass terms. The seesaw mechanism is a byproduct of the formalism, along with many other possibilities for generating tiny neutrino masses. We comment on phenomenological applications of this approach, in particular deriving a mechanism to address the long-standing $(g-2{)}_{\mu }$ anomaly in the context of the left-right symmetric model.

   hep-phPRD(2024)·1 citation
3. 03*

   A Global Fit of Non-Relativistic Effective Dark Matter Operators Including Solar Neutrinos

   Neal P. Avis Kozar🇨🇦 · Pat Scott🇦🇺 · Aaron C. Vincent🇨🇦

   We perform a global fit of dark matter interactions with nucleons using a non-relativistic effective operator description, considering both direct detection and neutrino data. We examine the impact of combining the direct detection experiments CDMSlite, CRESST-II, CRESST-III, DarkSide-50, LUX, LZ, PandaX-II, PandaX-4T, PICO-60, SIMPLE, SuperCDMS, XENON100, and XENON1T along with neutrino data from IceCube and ANTARES. While current neutrino telescope data lead to increased sensitivity compared to underground nuclear scattering experiments for dark matter masses above 100 GeV, our future projections show that the next generation of underground experiments will significantly outpace solar searches for most dark matter-nucleon elastic scattering interactions.

   hep-phJCAP(2025)·3 citations
4. 04*

   Hunting Dark Matter Lines in the Infrared Background with the James Webb Space Telescope

   Ryan Janish🇺🇸 · Elena Pinetti🇺🇸

   Dark matter particles with a mass around 1 eV can decay into near-infrared photons. Utilising available public blank sky observations from the NIRSpec IFU on the James Webb Space Telescope (JWST), we search for a narrow emission line due to decaying dark matter and derive leading constraints in the mass range 0.8-3 eV on the decay rate to photons, and more specifically, on the axion-photon coupling for the case of axion-like particles. We exclude $\tau <6.7\cdot 10^{26}$ s at $m_{\mathrm{DM}}\simeq 0.9$ eV and, in the case of axions, $g_{a\gamma \gamma }>9.4\cdot 10^{-12}$ GeV${}^{-1}$ for $m_a=2.15$ eV. Our results do not rely on dedicated observations, rather we use blank sky observations intended for sky subtraction, and thus our reach may be automatically strengthened as JWST continues to observe.

   hep-phPRL(2025)·62 citations
5. 05*

   $P_c$ states in the mixture of molecular and pentaquark pictures

   Kai Xu🇹🇭 · Kanokphon Phumphan🇹🇭 · Wiriya Ruangyoo🇹🇭 · Chia-Chu Chen🇹🇭 · Ayut Limphirat🇹🇭 · Yupeng Yan🇹🇭

   We systematically study hidden charm pentaquark states in the constituent quark model with a general Hamiltonian for multiquark systems, considering the coupling between the ${\Sigma }_c^{(\ast )}{\bar{D}}^{(\ast )}$ molecular states and the $q^{3}c\bar{c}$ compact pentaquark states by the one-gluon exchange hyperfine interaction. The ground state hidden-charm pentaquark mass spectra and the strong decay widths are calculated. This work suggests that $P_c(4312)$, $P_c(4457)$ and $P_c(4380)$ resonances might be mainly ${\Sigma }_c\bar{D}$, ${\Sigma }_c{\bar{D}}^{\ast }$ and ${\Sigma }_c^{\ast }\bar{D}$ hadronic molecules respectively, and $P_c(4440)$ might include sizable pentaquark components.

   hep-phPRD(2024)·2 citations
6. 06*

   Role of sea quarks in the nucleon transverse spin

   Chunhua Zeng🇨🇳 · Hongxin Dong🇨🇳 · Tianbo Liu🇨🇳 · Peng Sun🇨🇳 · Yuxiang Zhao🇨🇳

   We present a phenomenological extraction of transversity distribution functions and Collins fragmentation functions by simultaneously fitting to semi-inclusive deep inelastic scattering and electron-positron annihilation data. The analysis is performed within the transverse momentum dependent factorization formalism, and sea quark transversity distributions are taken into account for the first time. We find the $\bar{u}$ quark favors a negative transversity distribution while that of the $\bar{d}$ quark is consistent with zero according to the current accuracy. In addition, based on a combined analysis of world data and simulated data, we quantitatively demonstrate the impact of the proposed Electron-ion Collider in China on precise determinations of the transversity distributions, especially for sea quarks, and the Collins fragmentation functions.

   hep-phPRD(2024)·11 citations
7. 07*

   Radiative correction on moduli stabilization in modular flavor symmetric models

   Tatsuo Kobayashi🇯🇵 · Kaito Nasu🇯🇵 · Riku Sakuma🇯🇵 · Yusuke Yamada🇯🇵

   We study the radiative corrections to the stabilization of the complex structure modulus $\tau$ in modular flavor symmetric models. We discuss the possibility of obtaining the vacuum expectation value of $\tau$ in the vicinity of the fixed point where residual symmetries remain unbroken. As concrete examples, we analyze the 1-loop Coleman-Weinberg potential in the $A_4$ modular flavor models. We show that the 1-loop correction may lead to the slight deviation from the tree level result, which may realize a phenomenologically preferred value of the complex structure modulus $\tau$ particularly when the number of species contributing to the 1-loop correction is large enough.

   hep-phPRD(2023)·24 citations
8. 08*

   String breaking and running coupling of $\mathrm{Q}\bar{\mathrm{Q}}$ in a rotating media from holography

   Jing Zhou🇨🇳 · Saiwen Zhang🇨🇳 · Jun Chen🇨🇳 · Le Zhang🇨🇳 · Xun Chen🇨🇳

   Through gravity/gauge duality, the string breaking and running coupling constant of heavy quark-antiquark pair are investigated in the rotating background. For the meson decay mode $\mathrm{Q}\bar{\mathrm{Q}}\to \mathrm{Q}\bar{\mathrm{q}}+\bar{\mathrm{Q}}\mathrm{q}$, we discuss the string breaking and running coupling in the parallel and transverse case. It is found that the parallel case has a more significant on string breaking and running coupling constant than the transverse case in the confined phase. The string-breaking distance and the maximum value of running coupling will decrease with the increase of angular velocity in the parallel case. Besides, we also investigate the running coupling and screening distance at finite angular velocity in the deconfined phase. It is found that the maximum values of the running coupling and screening distance are decreasing functions of angular velocity. The parallel case has a more significant influence on the running coupling and screening distance than the transverse case in the deconfined phase.

   hep-phPLB(2023)·10 citations
9. 09*

   On the criterion of perturbativity with the mass-dependent beta function in extended Higgs models

   Shinya Kanemura🇯🇵 · Yushi Mura🇯🇵

   In order to realize electroweak first order phase transition, a category of extended Higgs models with relatively large self-coupling constants is often considered. In such a scenario, the running coupling constants can blow up at an energy scale much below the Planck scale. To clarify the allowed parameter space of the model, it is important to evaluate the scale where perturbation calculation breaks down. In the renormalization group equation analysis using the mass-independent renormalization scheme, we need the matching condition to connect the low energy theory and the high energy theory. Consequently, the analysis depends on the detail of the matching condition. On the other hand, the analysis with the mass-dependent beta function is performed in a simpler way, because the threshold effect is automatically included in the beta function. Therefore, in this paper, using the mass-dependent beta function at the one-loop level, we discuss the application limit of perturbation calculation. First, in a toy model with two complex scalar fields, we explain the essence of our method and compare our results with those based on the mass-independent beta function. We then apply our method to the more realistic model; i.e., the inert doublet model. We find that in our method, in which the threshold effect is automatically included, the energy scale where the perturbation calculation breaks down can be higher than the one using the mass-independent beta function, especially when the blow up scale is relatively low.

   hep-phPRD(2024)·8 citations
10. 10*

    Longitudinal kinematic imbalances in neutrino and antineutrino interactions for improved measurements of neutrino energy and the axial vector form factor

    Nathan Baudis🇨🇭 · Stephen Dolan🇨🇭 · Davide Sgalaberna🇨🇭 · Sara Bolognesi🇫🇷 · Laura Munteanu🇨🇭 · Till Dieminger🇨🇭

    Current and future accelerator neutrino oscillation experiments require an improved understanding of nuclear effects in neutrino-nucleus interactions. One important systematic uncertainty is introduced by the collective impact of nuclear effects which bias the reconstruction of the neutrino energy, such as the nuclear removal energy. In this manuscript, we introduce a novel observable for accelerator neutrino oscillation experiments, the visible longitudinal momentum imbalance, reconstructed in charged current quasi-elastic interactions from the outgoing charged lepton and nucleon. We demonstrate it to be minimally dependent on the neutrino energy and sensitive to sources of bias in neutrino energy reconstruction. Furthermore, we show how the use of the longitudinal imbalance in antineutrino interactions in a target containing hydrogen allows for an improved, high-purity selection of the interactions on hydrogen. This approach offers the potential for precise measurements of the nuclear axial vector form factor as well as of the antineutrino flux.

    hep-phhep-exPRD(2024)·7 citations
11. 11*

    Dissociation and thermodynamical properties of heavy quarkonia in an anisotropic strongly coupled hot QGP: using baryonic chemical potential

    Siddhartha Solanki🇮🇳 · Manohar Lal🇮🇳 · Rishabh Sharma🇮🇳 · Vineet Kumar Agotiya🇮🇳

    We extended the recent work Phys. Rev. D 97(9), 094033 (2018) to investigate quarkonium dissociation in presence of baryonic chemical potential (mu_b) and anisotropy ({\xi}) using quasi-particle approach in hot quantum chromodynamics (QCD) medium. We have determined binding energy and thermal width of S-states of charmonia and bottomonia for n=1 and n=2 (radial quantum number) with anisotropic parameter ({\xi}) and baryonic chemical potential. We have also determined the effects of baryonic chemical potential and anisotropy on mass spectra of 1S-states of quarkonia and the results obtained were consistent with theoretical and experimental works. But the key result obtained was dissociation temperature of the S-states with the effect of {mu_b} and {\xi}. At last, we have calculated the thermodynamical properties of QGP (i.e., pressure, energy density and speed of sound) using the parameter {\xi} and {mu_b}, which is the main key to study suppression of the quarkonium with latest determined value of energy density psNN after incorporating the effect of {\xi} and (mu_b).

    hep-phnucl-th0 citations
12. 12*

    Gravitational production of sterile neutrinos

    Fotis Koutroulis🇵🇱 · Oleg Lebedev🇫🇮 · Stefan Pokorski🇵🇱

    We consider gravitational production of singlet fermions such as sterile neutrinos during and after inflation. The production efficiency due to classical gravity is suppressed by the fermion mass. Quantum gravitational effects, on the other hand, are expected to break conformal invariance of the fermion sector by the Planck scale-suppressed operators irrespective of the mass. We find that such operators are very efficient in fermion production immediately after inflation, generating a significant background of stable or long-lived feebly interacting particles. This applies, in particular, to sterile neutrinos which can constitute cold non-thermal dark matter for a wide range of masses, including the keV scale.

    hep-phastro-ph.COJHEP(2024)·21 citations
13. 13*

    Precise determination of the pole position of the exotic $Z_c(3900)$

    Yun-Hua Chen🇨🇳 · Meng-Lin Du🇨🇳 · Feng-Kun Guo🇨🇳

    We perform a unified description of the experimental data of the ${\pi }^{+}{\pi }^{-}$ and $J/\psi {\pi }^{\pm }$ invariant mass spectra for $e^{+}{e}^{-}\to J/\psi {\pi }^{+}{\pi }^{-}$ and the $D^0{D}^{\ast -}$ mass spectrum for $e^{+}{e}^{-}\to D^0{D}^{\ast -}{\pi }^{+}$ at $e^{+}{e}^{-}$ center-of-mass energies 4.23 and 4.26 GeV. The analysis takes into account open-charm meson loops that contain triangle singularities, the $J/\psi \pi$-$D{\bar{D}}^{\ast }$ coupled-channel interaction respecting unitarity, and the strong $\pi \pi$-$K\bar{K}$ final state interaction using dispersion relations. The analysis leads to a precise determination of the $Z_c(3900)$ pole with the pole mass and width $(3880.7\pm 1.7_{\text{stat}}\pm 22.4_{\text{syst}})$ MeV and $(35.9\pm 1.4_{\text{stat}}\pm 15.3_{\text{syst}})$ MeV, respectively, and hints at that the $D{\bar{D}}^{\ast }$ molecular and non-molecular components are of similar importance in the $Z_c(3900)$ formation.

    hep-phhep-exSCPMA(2024)·31 citations
14. 14*

    Experimental measurement of the quality factor of a Fabry-Pérot open-cavity axion haloscope

    Juan F. Hernández-Cabrera🇪🇸 · Javier De Miguel🇯🇵 · E. Hernández-Suárez🇪🇸 · Enrique Joven-Álvarez🇪🇸 · H. Lorenzo-Hernández🇪🇸 · Chiko Otani🇯🇵 · Miguel A. Rapado-Tamarit🇪🇸 · J. Alberto Rubiño-Martín🇪🇸

    The axion is a hypothetical boson arising from the most natural solution to the problem of charge and parity symmetry in the strong nuclear force. Moreover, this pseudoscalar emerges as a dark matter candidate in a parameter space extending several decades in mass. The Dark-photons \& Axion-Like particles Interferometer (DALI) is a proposal to search for axion dark matter in a range that remains under-examined. Currently in a design and prototyping phase, this haloscope is a multilayer Fabry-Pérot interferometer. A proof-of-principle experiment is performed to observe the resonance in a prototype. The test unveils a quality factor per open cavity of a few hundred over a bandwidth of the order of dozens of megahertz. The result elucidates a physics potential to find the, so far elusive, axion, in a sector which can simultaneously solve the symmetry problem in the strong interaction and the enigma of dark matter.

    hep-phastro-ph.IMhep-exJINST(2024)·9 citations
15. 15*

    Study of Quarkonium properties using SUSYQM method with baryonic chemical potential

    Siddhartha Solanki🇮🇳 · Manohar Lal🇮🇳 · Rishabh Sharma🇮🇳 · Vineet Kumar Agotiya🇮🇳

    In this article, we employed the Quasi-particle debye mass at finite baryonic chemical potential which can be used in the medium modified heavy quark potential to solve the N-dimensional Schroedinger equation. The bound state solution of the Schroedinger equation using Cornell potential is obtained by Super-Symmetry Quantum Mechanics (SUSYQM) method. The thermodynamical properties of quark matter is calculated by using baryonic chemical potential (mu). We found that the binding energy of quarkonia dissociates more with quasi-particle debye mass in comparison to non-perturbative and leading order debye mass. The medium modified form of potential (real part) has been used to study the thermodynamical properties of quark matter with different equation of states (EoS) (i.e., pressure, energy density and speed of sound) with {mu}. The mass spectra of quarkonia has been also calculated in the N-dimensional space, and compared with the experimental data at N=3. We have also calculated the dissociation temperature (T_D) for the ground states of quarkonium using the dissociation criteria of thermal width.

    hep-phnucl-thInt.J.Mod.Phys.A(2022)·9 citations
16. 16*

    Negative Barnett effect, negative moment of inertia of gluon plasma and thermal evaporation of chromomagnetic condensate

    Victor V. Braguta🇷🇺 · Maxim N. Chernodub🇫🇷 · Ilya E. Kudrov🇷🇺 · Artem A. Roenko🇷🇺 · Dmitrii A. Sychev🇷🇺

    We discuss the negativity of the moment of inertia of (quark-)gluon plasma in a window of "supervortical" range of temperatures above the deconfining phase transition, $T\simeq (1\dots 1.5)T_c$ found recently in numerical Monte Carlo simulations by two independent methods. In our work, we confirm numerically that the origin of this effect is rooted in the thermal evaporation of the non-perturbative chromomagnetic condensate. We argue that the negative moment of inertia of gluon plasma indicates the presence of a novel effect, the negative spin-vortical coupling for gluons resulting in a negative gluonic Barnett effect: the spin polarization of gluons exceeds the total angular momentum of rotating plasma, thus forcing the orbital angular momentum to take negative values in the supervortical range of temperatures.

    hep-phhep-lathep-thPRD(2024)·32 citations
17. 17*

    Extending preferred axion models via heavy-quark induced early matter domination

    Andrew Cheek🇵🇱 · Jacek K. Osiński🇵🇱 · Leszek Roszkowski🇵🇱

    We examine the cosmological consequences of the heavy quarks in KSVZ-type axion models. We find that their presence often causes an early matter domination phase, altering the evolution of the Universe. This extends the axion mass into the region where standard cosmology leads to overproduction, and allows for a greater number of axion models with non-renormalizable terms to be viable. Quantitatively, we find that decays proceeding through effective terms of up to dimension 9 ($d=9$) remain consistent with cosmological constraints, in contrast with the result $d\le 5$ previously found in the literature. As a consequence, the heavy quarks can be much heavier and the axion mass window with the correct relic density for dark matter is extended by orders of magnitude, down to $m_a\approx 6\times 10^{-9}\mathrm{eV}$. This is achieved without resorting to fine-tuning of the initial misalignment angle, bolstering the motivation for many future axion haloscope experiments. Additionally, we explore how these models can be probed through measurements of the number of relativistic degrees of freedom at recombination.

    hep-phastro-ph.COJCAP(2024)·14 citations
18. 18*

    Effects of nuclear structure and quantum interference on diffractive vector meson production in ultra-peripheral nuclear collisions

    Heikki Mäntysaari🇫🇮 · Farid Salazar🇺🇸 · Björn Schenke🇺🇸 · Chun Shen🇺🇸 · Wenbin Zhao🇺🇸

    We study diffractive vector meson production in ultra-peripheral collisions (UPCs) of heavy nuclei, utilizing a theoretical framework based on the Color Glass Condensate (CGC) formalism. We focus on Au+Au, U+U, Ru+Ru, Zr+Zr, and Pb+Pb collisions, examining the transverse momentum dependence of vector meson production cross-sections and $\cos (2\Delta \Phi )$ asymmetries in the decay product distributions to explore the role of nuclear geometry. The angular modulation is due to the linear polarization of the incoming photons and quantum interference effects. We extract nuclear radii and find them to be consistent with experimental data from the STAR collaboration. The amplitudes of the $\cos (2\Delta \Phi )$ modulation in the cross-section and the extracted radii depend on the nuclear geometry. This dependence is dominated by the geometry-dependent variation of the minimum impact parameter required for ultra-peripheral collisions.

    ↳ nucl-thhep-phnucl-exPRC(2024)·34 citations
19. 19*

    Two-loop corrections to the Carroll-Field-Jackiw term in a CPT-odd Lorentz-violating scalar QED

    A. C. Lehum🇧🇷 · J. R. Nascimento🇧🇷 · A. Yu. Petrov🇧🇷

    In this study, we systematically calculate one-loop corrections to the Lorentz-violating vertices within the framework of CPT-odd Quantum Electrodynamics, encompassing scalar and photon fields in arbitrary gauge. Additionally, we ascertain the finite two-loop corrections to the Carroll-Field-Jackiw term. Furthermore, we analyze the UV divergent component of the two-loop Lorentz-violating correction in the self-energy of the scalar field.

    ↳ hep-thhep-phPLB(2024)·3 citations
20. 20*

    Dynamical and finite-size effects on the criterion of first-order phase transition

    Lijia Jiang🇨🇳 · Fei Gao🇨🇳 · Yu-xin Liu🇨🇳

    To identify first-order phase transitions in the dynamical process similar to the relativistic heavy-ion collisions, we investigate the dynamical behaviors of the first-order phase transition criterion in the Fokker-Planck framework. In the thermodynamic limit, the criterion can be expressed as combinations of cumulants or coefficients of an Ising-like effective potential. Our study reveals that factors such as phase transition scenarios, initial temperature, system volume, relaxation rate, and evolution trajectory have great impacts on the criterion, a larger initial temperature, a smaller volume, a larger relaxation rate, or bending of the trajectory will all lead to a reduction of the first-order phase transition signal, while volume expansion over time preserves signal integrity. Analysis along a hypothetical freezeout line shows that the signal is possibly preserved at relatively large chemical potentials.

    ↳ nucl-thhep-phEPJC(2025)·4 citations
21. 21*

    Low- and high-redshift H II starburst galaxies obey different luminosity-velocity dispersion relations

    Shulei Cao🇺🇸 · Bharat Ratra🇺🇸

    To determine whether or not H II starburst galaxies (H IIG) are standardizable candles, we study the correlation between the H$\beta$ luminosity ($L$) and the velocity dispersion ($\sigma$) of the ionized gas from H IIG measurements by simultaneously constraining the $L-\sigma$ relation parameters and the cosmological model parameters. We investigate six flat and nonflat relativistic dark energy cosmological models. We find that low-redshift and high-redshift H IIG data subsets are standardizable but obey different $L-\sigma$ relations. Current H IIG data are too sparse and too non-uniformly distributed in redshift to allow for a determination of why the samples follow different relations, but it could be caused by the high-redshift sample containing relatively fewer intrinsically dimmer sources (Malmquist bias) or it could be a consequence of H IIG evolution. Until this issue is better understood, H IIG data cosmological constraints must be treated with caution.

    ↳ astro-ph.COgr-qchep-phhep-thPRD(2024)·14 citations
22. 22*

    Anomalous Strangeness Transport

    Eugenio Megias🇪🇸 · Miguel A. Vazquez-Mozo🇪🇸

    Nondissipative transport of strangeness is studied in a chiral hadronic plasma with three flavors. In the phase in which chiral symmetry is preserved, strangeness transport is found to be driven by both an external magnetic field and fluid vorticity. As for the constitutive relations of the baryon and electromagnetic currents, they exhibit vortical terms proportional to the strangeness chemical potential. In the superfluid phase, transverse nondissipative diffusion of the baryon, electromagnetic, and strangeness charges is found, which survives in the limit of vanishing chiral imbalance and mixes in a fashion similar to standard dissipative diffusion in quark-gluon plasma.

    ↳ hep-thhep-phnucl-thJHEP(2024)·0 citations
23. 23*

    Prospects for probing the interaction between dark energy and dark matter using gravitational-wave dark sirens with neutron star tidal deformation

    Tian-Nuo Li🇨🇳 · Shang-Jie Jin🇨🇳 · Hai-Li Li🇨🇳 · Jing-Fei Zhang🇨🇳 · Xin Zhang🇨🇳

    Gravitational wave (GW) standard siren observations provide a rather useful tool to explore the evolution of the Universe. In this work, we wish to investigate whether dark sirens with neutron star (NS) deformation from third-generation GW detectors could help probe the interaction between dark energy and dark matter. We simulate the GW dark sirens of four detection strategies based on 3 yr observation and consider four phenomenological interacting dark energy (IDE) models to perform cosmological analysis. We find that GW dark sirens could provide tight constraints on ${\Omega }_{\mathrm{m}}$ and $H_0$ in the four IDE models, but do not perform well in constraining the dimensionless coupling parameter $\beta$ in models of the interaction proportional to the energy density of cold dark matter. Nevertheless, the parameter degeneracy orientations of cosmic microwave background (CMB) and GW are almost orthogonal, and thus, the combination of them could effectively break cosmological parameter degeneracies, with the constraint errors of $\beta$ being $0.00068-0.018$. In addition, we choose three typical equations of state (EoSs) of an NS, i.e., SLy, MPA1, and MS1, to investigate the effect of an NS's EoS in cosmological analysis. The stiffer EoS could give tighter constraints than the softer EoS. Nonetheless, the combination of CMB and GW dark sirens (using different EoSs of an NS) shows basically the same constraint results of cosmological parameters. We conclude that the dark sirens from 3G GW detectors would play a crucial role in helping probe the interaction between dark energy and dark matter, and the CMB+GW results are basically not affected by the EoS of an NS.

    ↳ astro-ph.COgr-qchep-phApJ(2024)·54 citations
24. 24*

    Reciprocal of the CPT theorem

    Luis Álvarez-Gaumé🇺🇸 · Moshe M. Chaichian🇫🇮 · Markku A. Oksanen🇫🇮 · Anca Tureanu🇫🇮

    The CPT theorem originally proven by Lüders and Pauli ensures the equality of masses, lifetimes, magnetic moments and cross sections of any particle and its antiparticle. We show that in a Lorentz invariant quantum field theory described by its Lagrangian, CPT-violating interaction alone does not split the masses of an elementary particle and its antiparticle but breaks only the equality of lifetimes, magnetic moments and cross sections. However, CPT violation in the mass term of a field in the Lagrangian, which can be attributed to be due to the size of the particle described by a form factor, breaks only the equality of masses. Also it is shown that the two separate effects of CPT violation in the interaction terms or in the mass term do not mix due to higher quantum corrections and remain distinguishable. Thus, we urge the experimentalists to search for such observable effects concerning differences in the masses, magnetic moments, lifetimes and cross sections between the elementary or bound state particles and their antiparticles. In the case of CPT violation only in the mass term, besides the difference in the masses of elementary bound state particles and their antiparticles, there will be also an extremely tiny difference in the lifetimes of bound states due to the difference in their phase spaces. From the details of calculations, it appears that the separate effects of the CPT violation described above are quite general, neither depending on how the nonlocality is achieved, nor depending on what this violation is due to: due to T violation, as considered in the present work, which can be attributed to a cosmological direction of time; to CP or to both T and CP violations. The latter two cases satisfy the Sakharov's conditions for explaining the baryon asymmetry in the Universe.

    ↳ hep-thhep-phPLB(2024)·3 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.