Effects of neutrino magnetic moment and charge radius constraints and medium modifications of the nucleon form factors on the neutrino mean free path in dense matter

Author(s)

Hutauruk, Parada T. P. ^{[1, 2, 3]} ; Sulaksono, A. ^[3] ; Tsushima, K. ^{[4, 5]}

Affiliation

^[1] Asia Pacific Ctr Theoret Phys, Pohang 37673, Gyeongbuk - South Korea

^[2] Pukyong Natl Univ, Dept Phys, Busan 48513 - South Korea

^[3] Univ Indonesia, Departemen Fis, FMIPA, Kampus Ui Depok, Depok 16424 - Indonesia

^[4] Univ Cidade Sao Paulo UNICID, BR-01506000 Sao Paulo, SP - Brazil

^[5] Univ Cruzeiro Sul, BR-01506000 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Nuclear Physics A; v. 1017, JAN 2022.
• Web of Science Citations: 0

Abstract

Effects of neutrino charge radius and magnetic moment constraints obtained from the astrophysical observations and reactor experiments, as well as in-medium modifications of the weak and electromagnetic nucleon form factors of the matter on the neutrino electroweak interaction with dense matter, are estimated. We use a relativistic mean-field model for the in-medium effective nucleon mass and quark-meson coupling model for nucleon form factors. We analyze the neutrino scattering cross section and mean free path in cold nuclear matter. We find that the increase of the cross section relative to that without neutrino form factors results in the decrease of the neutrino mean free path when neutrino form factors and the in-medium modifications of the nucleon weak and electromagnetic form factors are simultaneously considered. The quenching of the neutrino mean free path is evaluated to be about 12-58% for the values of mu(v) = 3 x 10(-12) mu(B) and R-v = 3.5 x 10(-5) MeV-1 compared with that obtained for the mu(v) = 0 and R-v = 0. The decrease of the neutrino mean free path is expected to decelerate the cooling of neutron stars. Each contribution of the neutrino form factors to the neutrino mean free path is discussed. (C) 2021 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 19/00763-0 - Origin of (Dynamical) Mass in Visible Universe and Hadron Properties in Nuclear Medium
• Grantee: Kazuo Tsushima
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems
• Grantee: Brett Vern Carlson
• Support Opportunities: Research Projects - Thematic Grants