Signals for Strange Quark Contributions to the Neutrino (Antineutrino) Scattering in Quasi-Elastic Region
- Authors
- Cheoun, Myung-Ki; Kim, Kyungsik
- Issue Date
- Aug-2009
- Publisher
- PHYSICAL SOC JAPAN
- Keywords
- neutrino scattering; strange quark; asymmetry
- Citation
- JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, v.78, no.8
- Journal Title
- JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
- Volume
- 78
- Number
- 8
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/15799
- DOI
- 10.1143/JPSJ.78.084202
- ISSN
- 0031-9015
- Abstract
- Strange quark contributions to elastic neutrino-nucleon scattering and neutrino-nucleus scattering for C-12 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 O-16(nu, nu'p) are additionally presented for detecting the strangeness effects.
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