A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data

This paper analyzes Planck and SPT-3G 2018 data to search for super-imposed oscillations in the primordial power spectrum, finding that combined datasets provide tighter constraints on oscillation amplitudes and reveal improved fits with significant statistical gains compared to individual datasets.

Akhil Antony, Fabio Finelli, Dhiraj Kumar Hazra, Daniela Paoletti, Arman ShafielooFri, 13 Ma⚛️ hep-ph

Translating current ALP photon coupling strength bounds to the Randall-Sundrum model

This paper translates current bounds on axion-like particle (ALP) photon couplings into constraints on the size of the extra dimension within the Randall-Sundrum model, demonstrating that these limits fail to resolve the gauge hierarchy problem for light ALPs and instead necessitate a massive ALP (ma0.1m_{a} \gtrsim 0.1 GeV) to be relevant.

Shihabul Haque, Sourov Roy, Soumitra SenGuptaFri, 13 Ma⚛️ hep-ph

Conversion of photons to dileptons in the Kroll-Wada and parton shower approaches

This paper demonstrates that parton shower event generators offer a more accurate description of dilepton spectra from photon conversion in heavy-ion collisions compared to the traditional Kroll-Wada approach, particularly at larger invariant masses where they better account for phase-space suppression, recoil kinematics, and higher-order corrections.

Tomáš Ježo, Michael Klasen, Alexander Puck NeuwirthFri, 13 Ma⚛️ hep-ph

Cosmic baryon census with fast radio bursts and gravitational waves

By unifying 104 localized fast radio bursts and 47 gravitational-wave events, this study presents an H0H_0-free measurement of the cosmic baryon density fraction (Ωb=0.0488±0.0064\Omega_{\rm b} = 0.0488 \pm 0.0064) that aligns with early-Universe observations and offers a robust late-Universe probe to address the H0H_0 tension and missing baryon problem.

Ji-Guo Zhang, Ji-Yu Song, Wan-Peng Sun, Ze-Wei Zhao, Jing-Fei Zhang, Xin ZhangFri, 13 Ma⚛️ hep-ph

Dark Matter Clumps as Sources of Gravitational-Wave Glitches in LIGO/Virgo/KAGRA data

This paper investigates whether small dark matter clumps passing near Earth could generate the gravitational-wave glitches observed in LIGO/Virgo/KAGRA data, finding that while most glitches are inconsistent with this hypothesis, the analysis establishes the first direct upper limits on the local over-density of such dark matter clumps.

Ezequiel Alvarez, Scott Perkins, Federico Ravanedo, Nicolas YunesFri, 13 Ma⚛️ gr-qc

On the addition of an SU(2)SU(2) quadruplet of scalars to the Standard Model

This paper establishes exact analytical boundaries and efficient computational procedures for determining the necessary and sufficient bounded-from-below conditions of scalar potentials in Standard Model extensions featuring an SU(2)SU(2) quadruplet of scalars, significantly reducing the required computational time by scanning specific lines rather than surfaces.

Darius Jurčiukonis, Luís LavouraFri, 13 Ma⚛️ hep-ph

Local spin polarization by color-field correlators and momentum anisotropy

This paper proposes that local spin polarization of quarks, induced by color-field correlators arising from the interplay of chromo-Lorentz force, chromo-magnetic polarization, and momentum anisotropy in glasma or quark-gluon plasma, generates a longitudinal polarization spectrum for Λ/Λˉ\Lambda/\bar{\Lambda} hyperons with a characteristic sinusoidal structure that aligns with experimental observations in relativistic heavy ion collisions.

Haesom Sung, Berndt Müller, Di-Lun YangFri, 13 Ma⚛️ nucl-th

An analysis of nuclear parton distribution function based on Kullback-Leibler divergence

This paper proposes a Kullback-Leibler divergence-based methodology to quantify differences between nuclear and free nucleon parton distribution functions, successfully modeling the EMC effect for quarks and revealing that the EPPS21 gluon nPDFs align more closely with the "minimum relative entropy" hypothesis than nNNPDF3.0, thereby offering a novel tool for future global fits in data-scarce regimes.

Shu-Man Hu, Ao-Sheng Xiong, Ji Xu, Fu-Sheng Yu, Ji-Xin YuFri, 13 Ma⚛️ hep-ph

Fully heavy tetraquark states with a diquark-antidiquark configuration

This paper systematically investigates the mass spectra and decay channels of fully heavy tetraquark states using a diquark-antidiquark model, concluding that while X(6600)X(6600), X(6900)X(6900), and X(7200)X(7200) are unlikely to be $1Swavefullycharmedtetraquarks,-wave fully charmed tetraquarks, X(6200)isastrongcandidateforthe is a strong candidate for the 2^{++}$ state and predicting several narrow states for future experimental observation.

Xi Xia, Tao GuoFri, 13 Ma⚛️ hep-ph

Testing Seesaw and Leptogenesis via Gravitational Waves: Majorana versus Dirac

This paper investigates how future space-borne gravitational wave detectors can test the B-L gauge extension of the Standard Model by distinguishing between Dirac and Majorana thermal Leptogenesis scenarios through the stochastic background generated by cosmic strings, with the former being probeable up to $10^9GeVandthelatterupto GeV and the latter up to 10^{12}$ GeV.

Anish Ghoshal, Kazunori Kohri, Nimmala NarendraFri, 13 Ma⚛️ hep-ph

Constraints on Dark Matter Models from Supermassive Black Hole Evolution

This paper utilizes a semi-analytical model of galaxy and supermassive black hole evolution within the Λ\LambdaCDM paradigm to demonstrate that the observed stellar mass–black hole mass relation at high redshifts disfavours fuzzy dark matter fields with masses below $2.0\times 10^{-20}$ eV and warm dark matter particles with masses below 7.2 keV at the 95% confidence level.

John Ellis, Malcolm Fairbairn, Juan Urrutia, Ville VaskonenFri, 13 Ma⚛️ hep-ex

Vorticity-induced effects from Wess-Zumino-Witten terms

This paper derives vorticity-induced effects on Nambu-Goldstone modes in chiral perturbation theory by treating vorticity as an axial-vector field within the Wess-Zumino-Witten framework, resulting in new contributions such as vorticity-induced currents, magnetic-field-induced angular momentum, and modified photon-pion couplings in the presence of electromagnetic fields and finite chemical potentials.

Geraint W. Evans, Naoki Yamamoto, Di-Lun YangFri, 13 Ma⚛️ nucl-th

Determination of the initial condition for the Balitsky-Kovchegov equation with transformers

This paper demonstrates that a transformer model can efficiently predict the energy evolution of the dipole amplitude governed by the Balitsky-Kovchegov equation, enabling rapid fitting of its initial condition to HERA deep inelastic scattering data and revealing that a smaller starting evolution point x0x_0 yields better agreement with experimental results.

Meisen Gao, Zhong-Bo Kang, Jani Penttala, Ding Yu ShaoFri, 13 Ma⚛️ nucl-ex

Natural inflation in Palatini F(R)F(R)

This paper demonstrates that embedding natural inflation within Palatini F(R)F(R) gravity, specifically with the model F(R)=R+αRnF(R) = R + \alpha R^n where $7/4 \lesssim n \leq 2,restoresitsconsistencywithobservationaldata,whereasmodelswith, restores its consistency with observational data, whereas models with n > 2$ fail to provide comparable improvements.

N. Bostan, R. H. Dejrah, C. Dioguardi, A. RacioppiFri, 13 Ma⚛️ gr-qc

Decoding the structure near the π+π\pi^+\pi^- mass threshold in ψ(3686)J/ψπ+π\psi(3686) \rightarrow J/\psi \pi^+\pi^- decays

Using dispersion theory to account for strong pion-pion final-state interactions, this study demonstrates that the substructure near the π+π\pi^+\pi^- threshold in ψ(3686)J/ψπ+π\psi(3686) \rightarrow J/\psi \pi^+\pi^- decays can be reproduced without invoking an extra resonance, attributing the observed dip primarily to a helicity-flip amplitude rather than the virtual exchange of the Zc(3900)Z_c(3900) state.

Yun-Hua Chen, Xiang-Kun Dong, Feng-Kun Guo, Christoph Hanhart, Bastian KubisFri, 13 Ma⚛️ hep-ex