New experimental limits on violations of the Pauli exclusion principle obtained with the Borexino Counting Test Facility
Articolo
Data di Pubblicazione:
2004
Abstract:
The Pauli exclusion principle (PEP) has been tested for nucleons (n, p) in C-12 and O-16 nuclei, using the results of background measurements with the prototype of the Borexino detector, the Counting Test Facility (CTF). The approach consisted of a search for gamma, n, p and/or alpha' s emitted in a non-Paulian transition of 1P- shell nucleons to the filled 1S(1/2) shell in nuclei. Similarly, the Pauli-forbidden beta(+/-) decay processes were searched for. Due to the extremely low background and the large mass (4.2 tons) of the CTF detector, the following most stringent up-to-date experimental bounds on PEP violating transitions of nucleons have been established: tau(C-12 --> (12)(C) over tilde + gamma) > 2.1 . 10(27) y, tau(C-12 --> (11)(B) over tilde + p) > 5.0 . 10(26) y, tau(C-12(O-16) --> 11 (C) over tilde((15)(O) over tilde) + n) > 3.7 . 10(26) y, tau(C-12 --> (8)(Be) over tilde+ alpha) > 6.1 . 10(23) y, tau(C-12 --> (12)(N) over tilde + e(-) + (ν) over tilde (e)) > 7.6 . 10(27) y and tau(C-12 --> (12)(B) over tilde + e(+) + nu(e)) > 7.7 . 10(27) y, all at 90% C. L.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
LIQUID SCINTILLATION DETECTOR; QUANTUM FIELD THEORY; SEARCH; ENERGY; TRANSITIONS; PROTOTYPE; DECAY
Elenco autori:
Back, H. O.; Balata, M.; DE BARI, Antonio; 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.; Derbin, A.; Deutsch, M.; Etenko, A.; von Feilitzsch, F.; Fernholz, R.; Ford, R.; Franco, D.; Freudiger, B.; Galbiati, C.; Gazzana, S.; Giammarchi, M. G.; Goeger Neff, M.; Goretti, A.; Grieb, C.; Hampel, W.; Harding, E.; Hartmann, F. X.; Heusser, G.; Ianni, A.; Ianni, A. M.; de Kerret, H.; Kiko, J.; Kirsten, T.; Kobychev, V. V.; Korga, G.; Korschinek, G.; Kozlov, Y.; Kryn, D.; Laubenstein, M.; Lendvai, C.; Leung, M.; Litvinovich, E.; Lombardi, P.; Machulin, I.; Malvezzi, S.; Maneira, J.; Manno, I.; Manuzio, D.; Manuzio, G.; Masetti, F.; Martemianov, A.; Mazzucato, U.; Mccarty, K.; Meroni, E.; Mention, G.; Miramonti, L.; Monzani, M. E.; Muratova, V.; Musico, P.; Niedermeier, L.; Oberauer, L.; Obolensky, M.; Ortica, F.; Pallavicini, M.; Papp, L.; Perasso, L.; Peiffer, P.; Pocar, 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.; Suvorov, Y.; Tarasenkov, V.; Tartaglia, R.; Testera, G.; Vignaud, D.; Vogelaar, R. B.; Vyrodov, V.; Wojcik, M.; Zaimidoroga, O.; Zuzel, G.
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