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Article
Report number	E1-2002-29 ; JINR-E1-2002-29
Title	Study of the Neutrino Electromagnetic Properties with Prototype of Borexino Detector
Author(s)	Back, H O ; Balata, M ; De Bari, A ; Beau, T ; De Bellefon, A ; Bellini, G ; Benziger, J B ; Bonetti, S ; Buck, C ; Caccianiga, B ; Cadonati, L ; Calaprice, F P ; Cecchet, G ; Chen, M ; Di Credico, A ; Dadoun, O ; D'Angelo, D ; Derbin, A V ; Deutsch, M ; Elisei, F ; Etenko, A ; Von Feilitzsch, F ; Fernholz, R ; Ford, R ; Franco, D ; Freudiger, B ; Galbiati, C ; Gatti, F ; Gazzana, S ; Giammarchi, M G ; Giugni, D ; Goeger-Neff, M ; Golubchikov, A ; Goretti, A ; Grieb, C ; Hagner, C ; Hagner, T ; Hampel, W ; Harding, B ; Hartmann, F X ; Heusser, G ; Ianni, A ; Ianni, A M ; De Kerret, H ; Kiko, J ; Kirsten, T ; Korga, G ; Korschinek, G ; Kozlov, Y ; Kryn, Didier ; Laubenstein, M ; Lendvai, C ; Lombardi, P ; Machulin, I ; Malvezzi, S ; Maneira, J ; Manno, I ; Manuzio, G ; Masetti, F ; Martemyanov, A N ; Mazzucato, U ; McCarty, K ; Meroni, E ; Miramonti, L ; Monzani, M E ; Musico, P ; Neder, H ; Niedermeier, L ; Oberauer, L ; Obolensky, M ; Ortica, F ; Pallavicini, M ; Papp, L ; Perasso, L ; Pocar, A ; Raghavan, R S ; Ranucci, G ; Rau, W ; Razeto, A ; Resconi, E ; Sabelnikov, A A ; Salvo, C ; Scardaoni, R ; Schönert, S ; Seidel, H ; Simgen, H ; Shutt, T A ; Skorokhvatov, M ; Smirnov, O Yu ; Sonnenschein, A ; Sotnikov, A ; Sukhotin, S ; Tarasenkov, V ; Tartaglia, R ; Testera, G ; Vignaud, D ; Vitale, S ; Vogelaar, R B ; Vyrodov, V N ; Wójcik, M ; Zaimidoroga, O A ; Zuzel, G
Affiliation	(Laboratory of Particle Physics, Dubna) ; (Virginia Polytechnique Institute and State University, Blacksburg, VA 24061-0435, Virginia, USA) ; (LNGS, Assergi (AQ), Italy) ; (Dipartimento di Fisica Nucleare e Teorica Universita' di Pavia, Pavia, Italy) ; (Laboratoire de Physique Corpusculaire et Cosmologie, 75231 Paris Cedex 05, France) ; (Dipartimento di Fisica Universita' di Milano, Milano, Italy) ; (Department of Physics, Princeton University, Princeton NJ 08544-0708, USA) ; (Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany) ; (Department of Physics, Queen's University, Stirling Hall, Kingston, Ontario K7L 3N6, Canada) ; (Dipartimento di Fisica Universita' and INFN, Genova, Italy) ; (St. Petersburg Nuclear Physics Institute, Gatchina, Russia) ; (Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA) ; (Dipartimento di Chimica, Universita' di Perugia, Perugia, Italy) ; (RRC Kurchatov Institute, Moscow, Russia) ; (Technische Universitaet Muenchen, Garching, Germany) ; (KFKI-RMKI, Budapest,! Hungary) ; (Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974-2070, USA) ; (Institute of Physics, Jagellonian University, Krakow, Poland)
Publication	2003
Imprint	22 Feb 2002
Number of pages	15
In:	Phys. Lett. B 563, 1-2 (2003) pp.35-47
Subject category	Particle Physics - Experiment
Abstract	Results of background measurements with the prototype of the Borexino detector have been used to obtain upper bound on neutrino magnetic moment \mu_{\nu} and lifetime of radiative neutrino decay \nu_H\to\nu_L +\gamma. The new upper limit for \mu_{\nu} of pp and ^{7}Be neutrino is 5.5\cdot 10^{-10}\mu_B and lifetime \tau_{c.m.}(\nu_H\to\nu_L +\gamma)/m_\nu\ge 1.5\cdot 10^3 s\cdot eV^{-1}. The latter result is an order of magnitude more restrictive than obtained in previous laboratory experiments.

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