Mon·Mar 18, 2024Monday·March 18, 2024

1. 01*

   Supernovae Time Profiles as a Probe of New Physics at Neutrino Telescopes

   Jeff Lazar · Ying-Ying Li · Carlos A. Arguelles · Vedran Brdar

   Neutrino telescopes, including IceCube, can detect galactic supernova events by observing the collective rise in photomultiplier count rates with a sub-second time resolution. Leveraging precise timing, we demonstrate the ability of neutrino telescopes to explore new weakly coupled states emitted from supernovae and subsequently decaying to neutrinos. Our approach utilizes publicly available packages, \texttt{ASTERIA} and \texttt{SNEWPY}, for simulating detector responses and parametrizing neutrino fluxes originating from Standard Model and new physics. We present results for two beyond the Standard Model scenarios and introduce the tool developed for testing a diverse range of new physics models.

   hep-phhep-exPRL(2025)·7 citations
2. 02*

   Impact of the cosmic neutrino background on long-range force searches

   Garv Chauhan🇺🇸 · Xun-Jie Xu🇨🇳

   Light bosons can mediate long-range forces. We show that light bosonic mediators interacting with a background medium, in particular, with the cosmic neutrino background (C$\nu$B), may induce medium-dependent masses which could effectively screen long-range forces from detection. This leads to profound implications for long-range force searches in e.g. the Eöt-Wash, MICROSCOPE, and lunar laser-ranging (LLR) experiments. For instance, we find that when the coupling of the mediator to neutrinos is above $3\times 10^{-10}$ or $5\times 10^{-13}$, bounds from LLR and experiments employing the Sun as an attractor, respectively, would be entirely eliminated. Larger values of the coupling can also substantially alleviate bounds from searches conducted at shorter distances.

   hep-phJHEP(2024)·12 citations
3. 03*

   An improved light-cone harmonic oscillator model for the $\varphi$-meson longitudinal leading-twist light-cone distribution amplitude

   Dan-Dan Hu🇨🇳 · Xing-Gang Wu🇨🇳 · Long Zeng🇨🇳 · Hai-Bing Fu🇨🇳 · Tao Zhong🇨🇳

   In the present paper, we study the properties of $\varphi$-meson longitudinal leading-twist light-cone distribution amplitude ${\varphi }_{2;\varphi }^{\Vert }(x,\mu )$ by starting from a light-cone harmonic oscillator model for its wavefunction. To fix the input parameters, we derive the first ten $\xi$-moments of ${\varphi }_{2;\varphi }^{\Vert }(x,\mu )$ by using the QCD sum rules approach under the background field theory. The shape of ${\varphi }_{2;\varphi }^{\Vert }(x,\mu =2\mathrm{GeV})$ tends to be a single-peak behavior, which is consistent with the latest Lattice QCD result. As an application, we derive the $D_s^{+}\to \varphi$ transition form factors (TFFs) by using the light-cone sum rules approach. At the large recoil point, we obtain $A_1(0)=0.512_{-0.020}^{+0.030}$, $A_2(0)=0.402_{-0.067}^{+0.078}$, $A_0(0)=0.596_{-0.020}^{+0.025}$ and $V(0)=0.882_{-0.036}^{+0.040}$. As for the two typical ratios ${\gamma }_V$ and ${\gamma }_2$, we obtain ${\gamma }_V=1.723_{-0.021}^{+0.023}$ and ${\gamma }_2=0.785_{-0.104}^{+0.100}$. After extrapolating those TFFs to the physically allowable region, we then obtain the transverse, longitudinal and total decay widths for semi-leptonic decay $D_s^{+}\to \varphi {\ell }^{+}{\nu }_{\ell }$. Then the branching fractions are $\mathcal{B}(D_s^{+}\to \varphi e^{+}{\nu }_e)=(2.367_{-0.132}^{+0.256})\times 10^{-3}$ and $\mathcal{B}(D_s^{+}\to \varphi {\mu }^{+}{\nu }_{\mu })=(2.349_{-0.132}^{+0.255})\times 10^{-3}$, which show good agreement with the data issued by the BESIII, the CLEO, and the BABAR Collaborations. We finally calculate $D_s^{+}\to \varphi {\ell }^{+}{\nu }_{\ell }$ polarization and asymmetry parameters.

   hep-phPRD(2024)·14 citations
4. 04*

   Exploring the Efimov effect in the $D^{\ast }{D}^{\ast }{D}^{\ast }$ system

   Pablo G. Ortega🇪🇸

   The emergence of the Efimov effect in the $D^{\ast }{D}^{\ast }{D}^{\ast }$ system is explored under the assumption that the heavy partner of the $T_{cc}^{+}$ exists as a $D^{\ast }{D}^{\ast }$ molecule with $(I)J^P=(0)1^{+}$. The three-to-three relativistic scattering amplitude is obtained from the ladder amplitude formalism, built from an energy-dependent contact two-body potential where the molecular component of the $T_{cc}^{\ast }$ state can be varied. We find that $(I)J^P=(\frac{1}{2})0^{-}$ three-body bound states can be formed, with properties that suggest that the Efimov effect can be realised for reasonable values of the molecular probability and binding energy of the $T_{cc}^{\ast }$.

   hep-phhep-exPRD(2024)·14 citations
5. 05*

   Probing the anomalous triple $ZZ\gamma$ and $Z\gamma \gamma$ couplings at the FCC-$\mu p$ and SPPC-$\mu p$

   E. Gurkanli🇹🇷

   In this study, 24.5 TeV CoM energy FCC-$\mu p$ and 20.2 TeV CoM energy SPPC-$\mu p$ muon-proton colliders have been utilized to explore the anomalous $ZZ\gamma$ and $Z\gamma \gamma$ couplings corresponding to dim-8 operators through the process of ${\mu }^{-}\gamma \to Z{l}^{-}\to l^{-}\widetilde{{\nu }_l}{\nu }_l$. A cut-based method has been applied to enhance the signal background ratio in the analysis. Coupling sensitivities, at a 95\% Confidence Level (C.L.), under the systematic uncertainties of 0\% and 5\%, were obtained with luminosities of ${\mathcal{L}}_{int}=5$ and 42.8 fb${}^{-1}$ for FCC-$\mu p$ and SPPC-$\mu p$ colliders, respectively. The sensitivities for anomalous $C_{BB}/{\Lambda }^4$, $C_{\tilde{B}W}/{\Lambda }^4$, $C_{BW}/{\Lambda }^4$ and $C_{WW}/{\Lambda }^4$ couplings without systematic uncertainty for FCC-$\mu p$ and SPPC-$\mu p$ were found as follows, respectively: [0.068; 0.070] TeV-4, [-0.187; 0.184] TeV-4, [-0.236; 0.238] TeV-4, [-0.619; 0.621] TeV-4, and [-0.066; 0.051] TeV-4, [-0.158; 0.151] TeV-4, [-0.207; 0.192] TeV-4, [-0.514; 0.522] TeV-4.

   hep-ph2 citations
6. 06*

   Scattering amplitude in QCD: summing large Pomeron loops

   Eugene Levin (Tel Aviv U.)🇮🇱

   In this paper we show that the sum of enhanced BFKL Pomeron loop diagrams generates the scattering amplitude, which turns out to be much smaller, than in the case of deep inelastic scattering. We use the simplified BFKL kernel in the leading twist approximation, which reproduces the main features of the scattering amplitude in the deep inelastic scattering(DIS). For such kernel the results are highly unexpected and they contradict (i) the solution to the Balitsky- Kovchegov(BK) equation for the scattering amplitude; (ii) the idea that the scattering amplitude stems from rare fluctuation and it has the same form as in DIS ; and (iii) the numerical simulations. We sincerely hope, that we made a mistake, which we failed to note, and which our reader will find. If not , we need to reconsider our view on the sum of the BFKL Pomeron loops and accept that their summing will lead to large contribution of the rare configurations in CGC approach to the scattering amplitude.

   hep-ph4 citations
7. 07*

   Further study of $c\bar{c}c\bar{c}$ system within a chiral quark model

   Yuheng Wu🇨🇳 · Xuejie Liu🇨🇳 · Yue Tan🇨🇳 · Hongxia Huang🇨🇳 · Jialun Ping🇨🇳

   Inspired by the recent Altas and CMS experiments on the invariant mass spectrum of $J/\psi J/\psi$, we systematically study the $c\bar{c}c\bar{c}$ system of $J^P=0^{+}$. In the framework of chiral quark model, we have carried out bound-state calculation and resonance-state calculation respectively by using Real-scaling method. The results of bound-state calculation show that there are no bound states in the $c\bar{c}c\bar{c}$ with $0^{+}$ system. The resonance-state calculation shows that there are four possible stable resonances: $R(6920)$, $R(7000)$, $R(7080)$ and $R(7160)$. $R(6920)$ and $R(7160)$ are experimental candidates for $X(6900)$ and $X(7200)$, whose main decay channel is $J/\psi J/\psi$. It is important to note that the another major decay channel of $R(7160)$ is ${\chi }_{c0}{\chi }_{c0}$, and the ${\chi }_{c0}{\chi }_{c0}$ is also the main decay channel of $R(7000)$, $R(7080)$. Therefore, we propose to search experimentally for these two predicted resonances in the ${\chi }_{c0}{\chi }_{c0}$ invariant mass spectrum.

   hep-phEPJC(2025)·7 citations
8. 08*

   Phenomenology of Axionic Static Neutron Stars with Masses in the Mass-Gap Region

   V.K. Oikonomou🇬🇷

   In this work we consider an axionic scalar-tensor theory of gravity and its effects on static neutron stars. The axionic theory is considered in the regime in which the axion oscillates around its potential minimum, which cosmologically occurs post-inflationary, when the Hubble rate is of the same order as the axion mass. We construct the TOV equations for this axionic theory and for a spherically symmetric static spacetime and we solve these numerically using a quite robust double shooting LSODA based python integration method. Regarding the equations of state, we used nine mainstream and quite popular ones, namely, the WFF1, the SLy, the APR, the MS1, the AP3, the AP4, the ENG, the MPA1 and the MS1b, using the piecewise polytropic description for each. From the extracted data we calculate the Jordan frame masses and radii, and we confront the resulting phenomenology with five well-known neutron star constraints. As we demonstrate, the AP3, the ENG and the MPA1 equations of state yield phenomenologically viable results which are compatible with the constraints, with the MPA1 equation of state enjoying an elevated role among the three. The reason is that the MPA1 fits well the phenomenological constraints. A mentionable feature is the fact that all the viable phenomenologically equations of state produce maximum masses which are in the mass-gap region with $M_{max}>2.5M_{\odot }$, but lower that the causal 3 solar masses limit. We also compare the neutron star phenomenology produced by the axionic scalar-tensor theory with the phenomenology produced by inflationary attractors scalar-tensor theories.

   ↳ gr-qchep-phClass.Quant.Grav.(2024)·14 citations
9. 09*

   Galactic disc heating by density granulation in fuzzy dark matter simulations

   Hsun-Yeong Yang🇨🇳 · Barry T. Chiang🇺🇸 · Guan-Ming Su · Hsi-Yu Schive🇹🇼 · Tzihong Chiueh🇹🇼 · Jeremiah P. Ostriker🇺🇸

   Fuzzy dark matter (FDM), an attractive dark matter candidate comprising ultralight bosons (axions) with a particle mass $m_a\sim 10^{-22}$ eV, is motivated by the small-scale challenges of cold dark matter and features a kpc-size de Broglie wavelength. Quantum wave interference inside an FDM halo gives rise to stochastically fluctuating density granulation; the resulting gravitational perturbations could drive significant disc thickening, providing a natural explanation for galactic thick discs. Here we present the first self-consistent simulations of FDM haloes and stellar discs, exploring $m_a=0.2-1.2\times 10^{-22}$ eV and halo masses $M_{\text{h}}=0.7-2.8\times 10^{11}$ M${}_{\odot }$. Disc thickening is observed in all simulated systems. The disc heating rates are approximately constant in time and increase substantially with decreasing $m_a$, reaching $dh/dt\simeq 0.04$ ($0.4$) kpc Gyr${}^{-1}$ and $d{\sigma }_z^2/dt\simeq 4$ ($150$) km${}^2$s${}^{-2}$Gyr${}^{-1}$ for $m_a=1.2$ ($0.2$) $\times 10^{-22}$ eV and $M_{\text{h}}=7\times 10^{10}{\text{M}}_{\odot }$, where $h$ is the disc scale height and ${\sigma }_z$ is the vertical velocity dispersion. These simulated heating rates agree within a factor of two with the theoretical estimates of Chiang et al., confirming that the rough estimate of Church et al. overpredicts the granulation-driven disc heating rate by two orders of magnitude. However, the simulation-inferred heating rates scale less steeply than the theoretically predicted relation $d{\sigma }_z^2/dt\propto m_a^{-3}$. Finally, we examine the applicability of the Fokker-Planck approximation in FDM granulation modelling and the robustness of the $m_a$ exclusion bound derived from the Galactic disc kinematics.

   ↳ astro-ph.GAastro-ph.COhep-phMNRAS(2024)·13 citations
10. 10*

    Angular and radial stabilities of spontaneously scalarized black holes in the presence of scalar-Gauss-Bonnet couplings

    Masato Minamitsuji🇵🇹 · Shinji Mukohyama🇯🇵 · Shinji Tsujikawa🇯🇵

    We study the linear stability of spontaneously scalarized black holes (BHs) induced by a scalar field $\varphi$ coupled to a Gauss-Bonnet (GB) invariant $R_{\mathrm{GB}}^2$. For the scalar-GB coupling $\xi (\varphi )=(\eta /8)({\varphi }^2+\alpha {\varphi }^4)$, where $\eta$ and $\alpha$ are constants, we first show that there are no angular Laplacian instabilities of even-parity perturbations far away from the horizon for large multipoles $l\gg 1$. The deviation of angular propagation speeds from the speed of light is largest on the horizon, whose property can be used to put constraints on the model parameters. For $\alpha \gtrsim -1$, the region in which the scalarized BH is subject to angular Laplacian instabilities can emerge. Provided that $\alpha \lesssim -1$ and $-1/2<\alpha {\varphi }_0^2<-0.1155$, where ${\varphi }_0$ is the field value on the horizon with a unit of the reduced Planck mass $M_{\mathrm{Pl}}=1$, there are scalarized BH solutions satisfying all the linear stability conditions throughout the horizon exterior. We also study the stability of spontaneously scalarized BHs in scalar-GB theories with a nonminimal coupling $-\beta {\varphi }^{2}R/16$, where $\beta$ is a positive constant and $R$ is a Ricci scalar. As the amplitude of the field on the horizon approaches an upper limit $|{\varphi }_0|=4/\sqrt{\beta }$, one of the squared angular propagation speeds $c_{\Omega -}^2$ enters the instability region $c_{\Omega -}^2<0$. So long as $|{\varphi }_0|$ is smaller than a maximum value determined for each $\beta$ in the range $\beta >5$, however, the scalarized BHs are linearly stable in both angular and radial directions.

    ↳ gr-qcastro-ph.COhep-phhep-thPRD(2024)·12 citations
11. 11*

    Measurement of the 1-jettiness event shape observable in deep-inelastic electron-proton scattering at HERA

    The H1 collaboration: V. Andreev (50) · M. Arratia (34)🇺🇸 · A. Baghdasaryan (46)🇦🇲 · A. Baty (9)🇺🇸 · K. Begzsuren (40)🇲🇳 · A. Bolz (17)🇩🇪 · V. Boudry (30)🇫🇷 · G. Brandt (15)🇩🇪 · D. Britzger (26)🇩🇪 · A. Buniatyan (7)🇬🇧 · L. Bystritskaya (50) · A.J. Campbell (17)🇩🇪 and 136 other authors

    The H1 Collaboration reports the first measurement of the 1-jettiness event shape observable ${\tau }_1^b$ in neutral-current deep-inelastic electron-proton scattering (DIS). The observable ${\tau }_1^b$ is equivalent to a thrust observable defined in the Breit frame. The data sample was collected at the HERA $ep$ collider in the years 2003-2007 with center-of-mass energy of $\sqrt{s}=319\text{GeV}$, corresponding to an integrated luminosity of $351.1{\text{pb}}^{-1}$. Triple differential cross sections are provided as a function of ${\tau }_1^b$, event virtuality $Q^2$, and inelasticity $y$, in the kinematic region $Q^2>150{\text{GeV}}^2$. Single differential cross section are provided as a function of ${\tau }_1^b$ in a limited kinematic range. Double differential cross sections are measured, in contrast, integrated over ${\tau }_1^b$ and represent the inclusive neutral-current DIS cross section measured as a function of $Q^2$ and $y$. The data are compared to a variety of predictions and include classical and modern Monte Carlo event generators, predictions in fixed-order perturbative QCD where calculations up to $\mathcal{O}({\alpha }_s^3)$ are available for ${\tau }_1^b$ or inclusive DIS, and resummed predictions at next-to-leading logarithmic accuracy matched to fixed order predictions at $\mathcal{O}({\alpha }_s^2)$. These comparisons reveal sensitivity of the 1-jettiness observable to QCD parton shower and resummation effects, as well as the modeling of hadronization and fragmentation. Within their range of validity, the fixed-order predictions provide a good description of the data. Monte Carlo event generators are predictive over the full measured range and hence their underlying models and parameters can be constrained by comparing to the presented data.

    ↳ hep-exhep-phnucl-exEPJC(2024)·22 citations
12. 12*

    Measurement of groomed event shape observables in deep-inelastic electron-proton scattering at HERA

    The H1 collaboration: V. Andreev (50) · M. Arratia (34)🇺🇸 · A. Baghdasaryan (46)🇦🇲 · A. Baty (9)🇺🇸 · K. Begzsuren (40)🇲🇳 · A. Bolz (17)🇩🇪 · V. Boudry (30)🇫🇷 · G. Brandt (15)🇩🇪 · D. Britzger (26)🇩🇪 · A. Buniatyan (7)🇬🇧 · L. Bystritskaya (50) · A.J. Campbell (17)🇩🇪 and 135 other authors

    The H1 Collaboration at HERA reports the first measurement of groomed event shape observables in deep inelastic electron-proton scattering (DIS) at $\sqrt{s}=319$ GeV, using data recorded between the years 2003 and 2007 with an integrated luminosity of $351$ pb${}^{-1}$. Event shapes provide incisive probes of perturbative and non-perturbative QCD. Grooming techniques have been used for jet measurements in hadronic collisions; this paper presents the first application of grooming to DIS data. The analysis is carried out in the Breit frame, utilizing the novel Centauro jet clustering algorithm that is designed for DIS event topologies. Events are required to have squared momentum-transfer $Q^2>150$ GeV${}^2$ and inelasticity $0.2<y<0.7$. We report measurements of the production cross section of groomed event 1-jettiness and groomed invariant mass for several choices of grooming parameter. Monte Carlo model calculations and analytic calculations based on Soft Collinear Effective Theory are compared to the measurements.

    ↳ hep-exhep-phnucl-exEPJC(2024)·18 citations
13. 13*

    Particle Production Scenario in an Algebraically Coupled Quintessence Field with a Dark Matter Fluid

    Saddam Hussain🇮🇳

    We investigate the dynamics of an algebraically coupled quintessence field with a dark matter fluid, focusing on particle production through the action principle via a modified interaction Lagrangian. The interaction parameter serves as the source of dark matter particle production and entropy generation. As particle creation occurs due to the interaction between the field and fluid sectors, the system exhibits additional pressure. Our analysis includes studying the system's dynamics by considering an exponential type of interaction corresponding to the field's exponential potential. We assess the system's background dynamics using the dynamical system stability technique to derive the constraints on the model parameters. Additionally, we determine the best-fit values of the model parameters against two combinations of data sets: (i) CC+Pantheon+SH0ES, and (ii) CC+Pantheon+SH0ES+SDSS BAO+ DESI BAO. By employing a comprehensive data analysis technique, we compare the evidence of our models to flat $\Lambda$CDM. Based on the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC), one of the models emerges as a robust alternative to $\Lambda$CDM when considering the joint data sets.

    ↳ gr-qchep-phChin.J.Phys.(2025)·6 citations
14. 14*

    $DK/D\pi$ scattering and an exotic virtual bound state at the $SU(3)$ flavour symmetric point from lattice QCD

    J. Daniel E. Yeo🇬🇧 · Christopher E. Thomas🇬🇧 · David J. Wilson🇬🇧

    Elastic $S-$wave scattering of a charm meson with a light pseudoscalar meson in $J^P=0^{+}$ is investigated in the flavour $\bar{3}$, $6$ and $\overline{15}$ sectors at the $SU(3{)}_f$ flavour point using lattice QCD, working on three volumes with $m_{\pi }\approx 700$ MeV. Large bases of interpolating operators are employed to extract finite-volume spectra, which are subsequently used with the Lüscher method to provide constraints on infinite-volume scattering amplitudes. Examining the singularities of the amplitudes, the $S-$wave amplitude in the flavour $\bar{3}$ sector is found to contain a deeply bound state, strongly coupled to elastic threshold, corresponding to the $J^P=0^{+}$ $D_{s0}^{\ast }(2317)$. In the exotic flavour $6$ sector a virtual bound state is found at $\sqrt{s_{\mathrm{pole}}}=2510-2610$ MeV, roughly $40-140$ MeV below threshold, whereas the $\overline{15}$ channel shows weak repulsion.

    ↳ hep-lathep-phJHEP(2024)·31 citations
15. 15*

    Quasinormal Modes and Universality of the Penrose Limit of Black Hole Photon Rings

    D. Giataganas🇹🇼 · A. Kehagias🇬🇷 · A. Riotto🇨🇭

    We study the physics of photon rings in a wide range of axisymmetric black holes admitting a separable Hamilton-Jacobi equation for the geodesics. Utilizing the Killing-Yano tensor, we derive the Penrose limit of the black holes, which describes the physics near the photon ring. The obtained plane wave geometry is directly linked to the frequency matrix of the massless wave equation, as well as the instabilities and Lyapunov exponents of the null geodesics. Consequently, the Lyapunov exponents and frequencies of the photon geodesics, along with the quasinormal modes, can be all extracted from a Hamiltonian in the Penrose limit plane wave metric. Additionally, we explore potential bounds on the Lyapunov exponent, the orbital and precession frequencies, in connection with the corresponding inverted harmonic oscillators and we discuss the possibility of photon rings serving as holographic horizons in a holographic duality framework for astrophysical black holes. Our formalism is applicable to spacetimes encompassing various types of black holes, including stationary ones like Kerr, Kerr-Newman, as well as static black holes such as Schwarzschild, Reissner-Nordström, among others.

    ↳ gr-qcastro-ph.COastro-ph.HEhep-ph+1JHEP(2024)·27 citations
16. 16*

    Cosmic Inflation: Background dynamics, Quantum fluctuations and Reheating

    Swagat S. Mishra🇬🇧

    These lecture notes provide a pedagogical introduction to some aspects of the inflationary cosmology, including the background scalar field dynamics, generation of primordial seed perturbations via quantum fluctuations during inflation, and the process of reheating after inflation in the single-field inflationary paradigm.

    ↳ gr-qcastro-ph.COhep-phhep-th17 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.