2013/03/24 by Myung-Ki Cheoun, Ki-Seok Choi, Cheoun, Myung-Ki +12
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Neutrino Physics Research #Nuclear Theory (nucl-th) #Nuclear physics research studies #Superconducting Materials and Applications #astro-ph.HE #nucl-th
paper · pdf · doi:10.48550/arxiv.1303.5920
openalex publication_date 2013/03/24 · arxiv created 2013/03/30 · arxiv updated 2013/04/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The nucleon form factors in free space are usually thought to be modified when a nucleon is bound in a nucleus or immersed in a nuclear medium. We investigate effects of the density-dependent axial and weak-vector form factors on the electro-neutrino (νe) and anti-electro-neutrino ( νe) reactions via neutral current (NC) for a nucleon in nuclear medium or 12C. For the density-dependent form factors, we exploit the quark-meson-coupling (QMC) model, and apply them to the νe and νe induced reactions by NC. About 12% decrease of the total cross section by νe reaction on the nucleon is obtained at normal density, ρ= ρ0 ∼ 0.15 fm-3 , as well as about 18% reduction of total νe cross section on 12C, by the modification of the weak form factors of the bound nucleon. However, similarly to the charged current reaction, effects of the nucleon property change in the νe reaction reduce significantly the cross sections about 30% for the nucleon in matter and 12C cases. Such a large asymmetry in the νe cross sections is addressed to originate from the different helicities of νe and νe.