Search for long-lived exotic particles in 12-geV proton-nucleus interactions

T. T. Nakamura, H. Kobayashi, A. Konaka, K. Imai, A. Masaike, K. Miyake, T. Nagamine, N. Sasao, Y. Yamada, I. Yamauchi

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


A sensitive search for the production of exotic hadrons with charge z=2 and z=(5/3 has been carried out with a 12-GeV proton beam. No candidate event was found in the mass range up to M/z=1.2 GeV/c2. Upper limits are established at 10-9 on the yield of such particles relative to the yield. In particular, this experiment has ruled out the existence of R-s with a mass of less than 1.6 GeV/c2 and a lifetime longer than 10-7 sec. 1989 The American Physical Society.

Original languageEnglish
Pages (from-to)1261-1266
Number of pages6
JournalPhysical Review D
Issue number5
Publication statusPublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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