Fri·Jun 23, 2023Friday·June 23, 2023

1. 01*

   Nuclear structure and elastic scattering observables obtained consistently with different NN interactions

   R.B. Baker🇺🇸 · M. Burrows🇺🇸 · Ch. Elster🇺🇸 · P. Maris🇺🇸 · G. Popa · S.P. Weppner🇺🇸

   Nucleon-nucleon ($NN$) interactions based on chiral effective theories are commonly used in ab initio calculations of light nuclei. Here we present a study based on three different NN interactions (up to next-to-next-to-leading order) for which structure and elastic proton scattering observables are consistently calculated for ${}^4$He, ${}^{12}$C, and ${}^{16}$O. The interactions are compared at the two-body level in terms of Wolfenstein amplitudes, and their predictions for ground state energies, point-proton radii, and charge form factors, as well as proton elastic scattering observables in the leading-order spectator expansion in the energy range between 65 and 160 MeV projectile energy are presented. To gain further insight into differences visible in elastic scattering observables, we investigate the behavior of the calculated effective nucleon-nucleus interactions for the ${}^{12}$C nucleus based on the different $NN$ interactions.

   ↳ nucl-thnucl-exPRC(2023)·5 citations
2. 02*

   Holographic description of elastic photon-proton and photon-photon scattering

   Akira Watanabe🇨🇳 · Zabihullah Ahmadi🇨🇳 · Zhibo Liu🇨🇳 · Wei Xie🇨🇳

   We investigate the elastic photon-proton and photon-photon scattering in a holographic QCD model, focusing on the Regge regime. Considering contributions of the Pomeron and Reggeon exchange, the total and differential cross sections are calculated. While our model involves several parameters, by virtue of the universality of the Pomeron and Reggeon, for most of them the values determined in the preceding study on the proton-proton and proton-antiproton scattering can be employed. Once the two adjustable parameters, the Pomeron-photon and Reggeon-photon coupling constant, are determined with the experimental data of the total cross sections, predicting the both cross sections in a wide kinematic region, from the GeV to TeV scale, becomes possible. We show that the total cross section data can be well described within the model, and our predictions for the photon-proton differential cross section are consistent with the data.

   ↳ hep-phhep-exnucl-exnucl-thPLB(2024)·2 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.