Effects of the density-dependent weak form factors on the neutrino reaction via neutral current for the nucleon in nuclear matter and ¹²C

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dc.contributor.authorCheoun, M.
dc.contributor.authorChoi, K.
dc.contributor.authorKim, K.
dc.contributor.authorSaito, K.
dc.contributor.authorKajino, T.
dc.contributor.authorTsushima, K.
dc.contributor.authorMaruyama, T.
dc.date.issued2013
dc.description.abstractThe 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 electroneutrino (νₑ) and anti-electroneutrino (ν̅ₑ) reactions with incident energy E(ν)≤ 80 MeV via neutral current (NC) for a nucleon in a 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 ν̅ₑ induced reactions by NC. About 12% decrease of the total cross section by the νₑ reaction on the nucleon is obtained at normal density, ρ=ρ₀∼0.15 fm⁻³, as well as about 18% reduction of the 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 ν̅ₑ reaction reduce significantly the cross sections about 30% for the nucleon in matter and ¹²C cases. Such a large asymmetry in the ν̅ₑ cross sections is addressed to originate from the different helicities of ν̅ₑ and νₑ.
dc.description.statementofresponsibilityMyung-Ki Cheoun, Ki-Seok Choi, K. S. Kim, Koichi Saito, Toshitaka Kajino, Kazuo Tsushima, and Tomoyuki Maruyama
dc.identifier.citationPhysical Review C: Nuclear Physics, 2013; 87(6):1-8
dc.identifier.doi10.1103/PhysRevC.87.065502
dc.identifier.issn0556-2813
dc.identifier.issn1089-490X
dc.identifier.urihttp://hdl.handle.net/2440/79801
dc.language.isoen
dc.publisherAmerican Physical Soc
dc.relation.granthttp://purl.org/au-research/grants/arc/FL0992247
dc.rights©2013 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevc.87.065502
dc.titleEffects of the density-dependent weak form factors on the neutrino reaction via neutral current for the nucleon in nuclear matter and ¹²C
dc.title.alternativeEffects of the density-dependent weak form factors on the neutrino reaction via neutral current for the nucleon in nuclear matter and (12)C
dc.typeJournal article
pubs.publication-statusPublished

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