Lifetime limits on ( B- L)-violating nucleon decay and di-nucleon decay modes from the Fréjus experiment

The fully contained events recorded in the Fréjus detector are used to search for ( B- L)-violating nucleon decay and di-nucleon decay processes. No signal is found for a sensitivity of 2.0 kiloton year. The lower limits on the partial lifetime for the various nucleon decay modes range from 5.4×10 3...

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Veröffentlicht in:	Physics letters. B 1991-10, Vol.269 (1), p.227-233
Hauptverfasser:	Berger, C., Fröhlich, M., Mönch, H., Nisius, R., Raupach, F., Schleper, P., Benadjal, Y., Blum, D., Boudarios, C., Dudelzack, B., Eschstruth, P., Jullian, S., Lalanne, D., Laplanche, F., Longemare, C., Paulot, C., Perdereau, O., Roy, P., Szklarz, G., Behr, L., Degrange, B., Nguyen-Khac, U., Tisserant, S., Arpesella, C., Bareyre, P., Barloutaud, R., Borg, A., Chardin, G., Ernwein, J., Glicenstein, J.F., Mosca, L., Moscoso, L., Becker, J., Becker, K.H., Daum, K., Jacobi, B., Kuznik, B., Löffler, J., Meyer, H., Rhode, W., Schubnell, M., Wei, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrophysics Cosmology and Extra-Galactic Astrophysics Exact sciences and technology Physics
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Beschreibung
Zusammenfassung:	The fully contained events recorded in the Fréjus detector are used to search for ( B- L)-violating nucleon decay and di-nucleon decay processes. No signal is found for a sensitivity of 2.0 kiloton year. The lower limits on the partial lifetime for the various nucleon decay modes range from 5.4×10 30 yr for p→ μ − π +K + to 1.0×10 32 yr for pn→e +n. We also quote limits on neutron and di-neutron decay into three and two neutrinos respectively.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/0370-2693(91)91479-F