Neutrino Capture Reactions on ${}^{40}$Ar

Abstract

Gamow-Teller (GT) strength in ${}^{40}$Ar is studied by shell-model calculations with monopole-based universal intearction, which has tensor components of $\pi$ρ$-mesonexchanges.CalculatedGTstrengthisfoundtobeconsistentwiththeexperimentaldataobtainedbyrecent($p, n$)reactions.Neutrinocapturecrosssectionson$^{40}$Arforsolarneutrinosfrom$^{8}$Barefoundtobeenhancedcomparedwithpreviouscalculations.Thereactioncrosssectionsformultipolesotherthan$0^{+}$and$1^{+}$ are obtained by random-phase approximation (RPA). Their contributions become important for neutrino energies larger than 50 MeV.

9 pages, 2 figures

References in corpus (2)

• Shell-model study of boron, carbon, nitrogen and oxygen isotopes based on monopole-based-universal interaction
• First Measurements of Inclusive Muon Neutrino Charged Current Differential Cross Sections on Argon

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