Measurement of ν̄e—e scattering cross section with CsI(Tl) detector array and the Beyond Standard Model constraints
Abstract
A search of ν̄e—e scattering cross section was carried out at the Kuo-Sheng nuclear power station. Based on 29882 and 7369 kg-days of reactor ON/OFF data, respectively, at an average reactor ON ν̄e flux of 6.4×1012cm-2 s-1, the standard model (SM) electroweak interaction was probed at the squared 4-momentum transfer range of Q2∼3×10-6 GeV2. The ratio of experimental to SM cross section was measured [1.08±0.21(stat)±0.16(sys)]. We placed the constraints on the electroweak parameters (gV,gA), corresponding to a weak mixing angle measurement of sin2θW = 0.251±0.031(stat)±0.024(sys). A Point Contact Germanium Detector (PCGe) of mass 1 kg has been installed at a new underground laboratory "China Jin-Ping Laboratory (CJPL)" in China.
- Publication:
-
NUINT11: the 7th International Workshop on Neutrino-Nucleus Interactions in the Few GeV Regions
- Pub Date:
- November 2011
- DOI:
- 10.1063/1.3661609
- Bibcode:
- 2011AIPC.1405..331S
- Keywords:
-
- nuclear reactions and scattering;
- nucleon-nucleon interactions;
- scintillating fibre detectors;
- neutrino oscillations;
- muons;
- 13.60.Hb;
- 13.75.Cs;
- 29.40.Mc;
- 14.60.Pq;
- 14.60.Ef;
- Total and inclusive cross sections;
- Nucleon-nucleon interactions;
- Scintillation detectors;
- Neutrino mass and mixing;
- Muons