Search for dinucleon decay into kaons in Super-Kamiokande. Journal Article uri icon



  • A search for the dinucleon decay pp → K+ K+ has been performed using 91.6  kton·yr data from Super-Kamiokande-I. This decay provides a sensitive probe of the R-parity-violating parameter λ112''. A boosted decision tree analysis found no signal candidates in the data. The expected background was 0.28±0.19 atmospheric neutrino induced events and the estimated signal detection efficiency was 12.6%±3.2%. A lower limit of 1.7×10(32)  years has been placed on the partial lifetime of the decay O16 → C14K+ K+ at 90% C.L. A corresponding upper limit of 7.8×10(-9) has been placed on the parameter λ112''.

publication date

  • April 4, 2014

Date in CU Experts

  • January 26, 2017 3:02 AM

Full Author List

  • Litos M; Abe K; Hayato Y; Iida T; Ikeda M; Iyogi K; Kameda J; Kobayashi K; Koshio Y; Kozuma Y

author count

  • 121

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

Additional Document Info

start page

  • 131803


  • 112


  • 13