出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Searches for nucleon decays are performed by Super-Kamiokande, a large water cherenkov detector. The total exposure is 173 kton·year which includes 1489 days data of Super-Kamiokande phase I (SK-1), 799 days of phase II (SK-2), and 518 days of phase III (SK-3). We have not observed any evidence of nucleon decay yet. The lower limit of proton life time decay into e+p0, which is dominant mode predicted by non-SUSY model, is 1.0×1034 years with 90 % confidence level. The lower limit of proton life time decay into nK+, which is dominant mode predicted by SUSY model, is 3.3×1033 years with 90 % confidence level.
