First result for the neutrino magnetic moment from measurements with the GEMMA spectrometer

Autor:	A. S. Starostin, M. G. Gavrilov, E. V. Demidova, Ts. Vylov, M. Shirchenko, V.B. Brudanin, A. G. Beda, V. G. Egorov
Rok vydání:	2007
Předmět:	Physics Nuclear and High Energy Physics Particle physics Spectrometer Magnetic moment Scattering Flux Atomic and Molecular Physics and Optics Bohr model Semiconductor detector symbols.namesake Nuclear reactor core symbols Neutrino
Zdroj:	Physics of Atomic Nuclei. 70:1873-1884
ISSN:	1562-692X 1063-7788
Popis:	The first result of the neutrino magnetic moment measurement at the Kalininskaya Nuclear Power Plant (KNPP) with the GEMMA spectrometer is presented. An antineutrino-electron scattering is investigated. A high-purity germanium detector of 1.5 kg placed 13.9 m away from the 3 GW reactor core is used in the spectrometer. The antineutrino flux is $2.73\times 10^{13} \nu_e / cm^2 / s$. The differential method is used to extract the $\nu$-e electromagnetic scattering events. The scattered electron spectra taken in 6200 and 2064 hours for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic moment $\mu_\nu < 5.8\times 10^{-11}$ Bohr magnetons at 90{%} CL is derived from the data processing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::14215345ea98dfe3632f4a792dfa4cff https://doi.org/10.1134/s1063778807110063 Zobrazit plný text záznamu Plný text ve formátu PDF