Gemma experiment: The results of neutrino magnetic moment search

Autor: M. Shirchenko, V. Brudanin, A. S. Starostin, E. Shevchik, V. S. Pogosov, V. Egorov, D. Medvedev, I. Zhitnikov, A. G. Beda
Rok vydání: 2013
Předmět:
Zdroj: Physics of Particles and Nuclei Letters. 10:139-143
ISSN: 1531-8567
1547-4771
DOI: 10.1134/s1547477113020027
Popis: The result of the neutrino magnetic moment (NMM) measurement at the Kalinin Nuclear Power Plant (KNPP) with GEMMA spectrometer is presented. The antineutrino-electron scattering is investigated. A high-purity germanium (HPGe) detector with a mass of 1.5 kg placed at a distance of 13.9 m from the 3 GWth reactor core is exposed to the antineutrino flux of 2.7 × 1013 cm−2s−1. The recoil electron spectra taken in 18134 and 4487 h for the reactor ON and OFF periods are compared. The upper limit for the NMM μν < 2.9 × 10−11 μB at 90% C.L. is derived from the data processing.
Databáze: OpenAIRE