期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.101801
关键词
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资金
- Japanese Ministry of Education, Culture, Sports, Science and Technology
- United States Department of Energy
- U.S. National Science Foundation
- Korean Research Foundation (BK21)
- National Research Foundation of Korea [NRF-20110024009]
- State Committee for Scientific Research in Poland [1757/B/H03/2008/35]
- Japan Society for Promotion of Science
- National Natural Science Foundation of China [10575056]
- Grants-in-Aid for Scientific Research [23340062, 25105004] Funding Source: KAKEN
The trilepton nucleon decay modes p -> e(+)nu nu and p -> mu(+)nu nu violate vertical bar Delta(B - L)vertical bar by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of tau(p -> e+nu nu) > 1.7 x 10(32) years and tau(p ->mu+nu nu) > 2.2 x 10(32) years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.
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