Signals for Strange Quark Contributions to the Neutrino (Antineutrino) Scattering in Quasi-Elastic Region

概要

論文の詳細を見る
Strange quark contributions to elastic neutrino–nucleon scattering and neutrino–nucleus scattering for 12C target in quasi-elastic region are investigated on the incident energy of 500 MeV within the framework of a relativistic single particle model. For the neutrino–nucleus scattering, the effects of final state interaction for the knocked-out nucleon are included by a relativistic optical potential. In the cross sections for neutrino–nucleus scattering we found some cancellations of the strange quark contributions in the knocked-out proton and neutron process. Consequently, the asymmetries between the incident neutrino and antineutrino, which are given by the ratio of neutral current to charged current, and a difference between the asymmetries are shown to be more feasible quantities for the strangeness effects. In order to explicitly display the importance of such cancellations, results of the exclusive reaction 16O$(\nu, \nu' p)$ are additionally presented for detecting the strangeness effects.
Physical Society of Japanの論文
2009-08-15