Nucleon Decay in Soudan 2

Details Nucleon Decay in Soudan 2 Nucleon Decay in Soudan 2

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999icrc....2..364g&link_type=abstract

Proceedings of the 26th International Cosmic Ray Conference. August 17-25, 1999. Salt Lake City, Utah, USA. Under the auspices o

Physics

Scientific paper

The Soudan 2 detector is used to search for evidence of nucleon decay. Particular emphasis is put on searches for modes with multiple-charged particles in the final state, and for modes suggested by super-symmetric theories. BKG Data kT-yr 1030 yr PDG98 Mode B K+ 3.56 43 100 + ! +0 5.5 1.1 0 K K + ! + 9.0 0.4 1 + + , p! 31 0.5 0 3.56 142 190 0 4.41 59 86 KS 0 ! +, 17 6.1 7 KS KS ! 0 03S 0 3 3.4 7 0 ! 0 04S 5 1.2 2 KS 0 n ! 11 2.6 4 3.56 21 100 0 n ! 7 0.7 0 3.56 32 54 + p ! 4.6 6.0 5 3.56 6:9 25 + e, n ! e 20 1.6 1 3.56 68 74 +0 n!e 9 0.9 0 3.56 38 550 +K0 p!e 4.41 117 76 S KS ! + , 0 15 0.61 1 KS ! 0 0 0 8 0.42 0 +K0 p! 4.41 151 64 S KS ! + , 0 16 0 0:24 KS ! 0 0 0 6 0.61 0 +K0 p!e 11 3.5 2 4.41 51 44 L p ! + KL 0 12 0.37 0 4.41 83 44 Table 1: Nucleon Decay limits set by Soudan 2 The Soudan 2 collaboration has analyzed its contained event sample for the evidence of nucleon decay. Limits in a number of decay modes are shown in Table 1. Details about the analysis can be found in Allison et al., and Wall et al. References Allison, W.W.A. et al., Phys. Lett. B427, 217 1998. Wall, D. et al., submitted to Physical Review, 1999.

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