New limits on nucleon decays into invisible channels with the BOREXINO counting test facility
Articolo
Data di Pubblicazione:
2003
Abstract:
The results of background measurements with the second version of the BOREXINO Counting Test Facility (CTF-II), installed in the Gran Sasso Underground Laboratory, were used to obtain limits on the instability of nucleons, bounded in nuclei, for decays into invisible channels (inv): disappearance, decays to neutrinos, etc. The approach consisted of a search for decays of unstable nuclides resulting from N and NN decays of parent C-12, C-13 and O-16 nuclei in the liquid scintillator and the water shield of the CTF Due to the extremely low background and the large mass (4.2 t) of the CTF detector, the most stringent (or competitive) up-to-date experimental bounds have been established: tau(n --> inv) > 1.8 x 10(25) yr, tau(p --> inv) > 1.1 x 10(26) yr, tau(nn --> inv) > 4.9 x 10(25) yr and tau(pp --> inv) > 5.0 x 10(25) yr, all at 90% C.L.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
LIQUID SCINTILLATOR; PARTICLE PHYSICS; DETECTOR; DIMENSIONS; NEUTRINOS; LIFETIME; SEARCH; MATTER; MODES; MASS
Elenco autori:
Back, H. O.; Balata, M.; DE BARI, Antonio; Beau, T.; de Bellefon, A.; Bellini, G.; Benziger, J.; Bonetti, S.; Buck, C.; Caccianiga, B.; Cadonati, L.; Calaprice, F.; Cecchet, G.; Chen, M.; Di Credico, A.; Dadoun, O.; D'Angelo, D.; Denisov, V. Y.; Derbin, A.; 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.; Goretti, A.; Grieb, C.; Hagner, C.; Heusser, G.; Ianni, A.; Ianni, A. M.; de Kerret, H.; Kiko, J.; Kirsten, T.; Kobychev, V.; Korga, G.; Korschinek, G.; Kozlov, Y.; Kryn, D.; Laubenstein, M.; Litvinovich, E.; Lendvai, C.; Lombardi, P.; Machulin, I.; Malvezzi, S.; Maneira, J.; Manno, I.; Manuzio, D.; Manuzio, G.; Masetti, F.; Martemianov, A.; Mazzucato, U.; Mccarty, K.; Meroni, E.; Miramonti, L.; Monzani, M. E.; Musico, P.; Niedermeier, L.; Oberauer, L.; Obolensky, M.; Ortica, F.; Pallavicini, M.; Papp, L.; Perasso, L.; Pocar, A.; Ponkratenko, O. A.; Raghavan, R. S.; Ranucci, G.; Razeto, A.; Sabelnikov, A.; Salvo, C.; Scardaoni, R.; Schimizzi, D.; Schoenert, S.; Simgen, H.; Shutt, T.; Skorokhvatov, M.; Smirnov, O.; Sonnenschein, A.; Sotnikov, A.; Sukhotin, S.; Tarasenkov, V.; Tartaglia, R.; Testera, G.; Tretyak, V. I.; Vignaud, D.; Vogelaar, R. B.; Vyrodov, V.; Wojcik, M.; Zaimidoroga, O.; Zdesenko, Y. G.; Zuzel, G.
Link alla scheda completa:
Pubblicato in: