Tue·Jul 4, 2023Tuesday·July 4, 2023

1. 01*

   Displaced Signals of Hidden Vectors at the Electron-Ion Collider

   Hooman Davoudiasl🇺🇸 · Roman Marcarelli🇺🇸 · Ethan T. Neil🇺🇸

   The Electron-Ion Collider (EIC) provides unique opportunities in searching for new physics through its high center of mass energy and coherent interactions of large nuclei. We examine how light weakly interacting vector bosons from a variety of models can be discovered or constrained, over significant parts of their parameter space, through clean displaced vertex signals at the EIC. Our results indicate that the searches we propose favorably compare with or surpass existing experimental projections for the models examined. The reach for the new physics that we consider can be markedly improved if "far backward" particle identification capabilities are included in the EIC detector complex.

   ↳ hep-phhep-exnucl-exPRD(2023)·19 citations
2. 02*

   Search for environment-dependent dilatons

   Hauke Fischer🇦🇹 · Christian Käding🇦🇹 · René I.P. Sedmik🇦🇹 · Hartmut Abele🇦🇹 · Philippe Brax🇫🇷 · Mario Pitschmann🇦🇹

   The environment-dependent dilaton field is a well-motivated candidate for dark energy and naturally arises in the strong coupling limit of string theory. In this article, we present the very first experimental constraints on the parameters of this model. For this, we employ data obtained from the qBounce collaboration and the Lunar Laser Ranging (LLR) experiment. Furthermore, we forecast expected exclusion plots for the Casimir And Non Newtonian force EXperiment (Cannex) soon to be realised in an improved setup. Finally, we provide a detailed analysis of the screening mechanism and additional symmetries of the dilaton field theory.

   ↳ gr-qcastro-ph.COhep-phnucl-exPhys.Dark Univ.(2024)·19 citations
3. 03*

   Neutral current neutrino and antineutrino scattering off the polarized nucleon

   Krzysztof M. Graczyk🇵🇱 · Beata E. Kowal🇵🇱

   The elastic and inelastic neutral current $\nu$ ($\overline{\nu }$) scattering off the polarized nucleon is discussed. The inelastic scattering concerns the single-pion production process. We show that the spin asymmetries' measurement can help to distinguish between neutrino and antineutrino neutral current scattering processes. The spin asymmetries also encode information about a type of target. Eventually, detailed studies of the inelastic spin asymmetries can improve understanding of the resonant-nonresonant pion production mechanism.

   ↳ hep-phhep-exnucl-exnucl-thPRD(2023)·4 citations
4. 04*

   $\beta$-decay half-lives as an indicator of shape-phase transition in neutron-rich Zr isotopes with particle-vibration coupling effect

   Kenichi Yoshida🇯🇵 · Yifei Niu🇨🇳 · Futoshi Minato🇯🇵

   [Background] $\beta$-decay half-life is sensitive to the shell structure near the Fermi levels. Nuclear deformation thus impacts the $\beta$-decay properties. [Purpose] A first-order shape-phase transition in neutron-rich Zr isotopes is predicted by some models. We investigate the $\beta$-decay half-lives of neutron-rich nuclei around ${}^{110}$Zr, where the shape-phase transition is predicted to occur, to see if the $\beta$-decay half-life can be an indicator of the shape changes. [Method] The proton-neutron quasiparticle random-phase approximation (RPA) is adopted to calculate the Gamow-Teller transitions. In addition, we apply the quasiparticle phonon-vibrational coupling (PVC) to consider the phonon couplings. [Results] The spherical and oblate configurations give similar half-lives but shorter ones than the prolate configuration at the RPA level. The PVC effect further reduces the half-lives in general, but the effect is smaller for the deformed configuration than that for the spherical one. As a result, it makes the shape change from the oblate configuration to the spherical configuration visible. Therefore, a sudden shortening of $\beta$-decay half-lives is always found at the nuclear shape changes. [Conclusions] $\beta$-decay half-life is an indicator of the shape-phase transition. The shape mixing and the roles of the triaxial deformation are subject to study in the future.

   ↳ nucl-thnucl-exPRC(2023)·11 citations
5. 05*

   The Standard Model theory of neutron beta decay

   Mikhail Gorchtein🇩🇪 · Chien-Yeah Seng🇺🇸

   We review the status of the Standard Model theory of neutron beta decay. Particular emphasis is put on the recent developments in the electroweak radiative corrections. Given that some existing approaches give slightly different results, we thoroughly review the origin of discrepancies, and provide our recommended value for the radiative correction to the neutron and nuclear decay rates. The use of dispersion relation, lattice Quantum Chromodynamics and effective field theory framework allows for high-precision theory calculations at the level of $10^{-4}$, turning neutron beta decay into a powerful tool to search for new physics, complementary to high-energy collider experiments. We offer an outlook to the future improvements.

   ↳ hep-phnucl-exnucl-thUniverse(2023)·26 citations
6. 06*

   Extraction of the strong coupling with HERA and EIC inclusive data

   Salim Cerci🇹🇷 · Zuhal Seyma Demiroglu🇺🇸 · Abhay Deshpande🇺🇸 · Paul R. Newman🇬🇧 · Barak Schmookler🇺🇸 · Deniz Sunar Cerci🇹🇷 · Katarzyna Wichmann🇩🇪

   Sensitivity to the strong coupling ${\alpha }_S(M_Z^2)$ is investigated using existing Deep Inelastic Scattering data from HERA in combination with projected future measurements from the Electron Ion Collider (EIC) in a next-to-next-to-leading order QCD analysis. A potentially world-leading level of precision is achievable when combining simulated inclusive neutral current EIC data with inclusive charged and neutral current measurements from HERA, with or without the addition of HERA inclusive jet and dijet data. The result can be obtained with substantially less than one year of projected EIC data at the lower end of the EIC centre-of-mass energy range. Some questions remain over the magnitude of uncertainties due to missing higher orders in the theoretical framework.

   ↳ hep-phhep-exhep-thnucl-ex+1EPJC(2023)·17 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.