Search for light gluinos via the spontaneous appearance of π+ π Pairs with an 800 GeV/c proton beam at fermilab

KTeV Collaboration

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

We searched for the appearance of π+ π pairs with invariant mass ≥ 648 MeV/c2 in a neutral beam. Such an observation could signify the decay of a long-lived light neutral particle. We find no evidence for this decay. Our null result severely constrains the existence of an R0 hadron, which is the lightest bound state of a gluon and a light gluino (gg), and thereby also the existence of a light gluino. Depending on the photino mass, we exclude the R0 in the mass and lifetime ranges of 1.2 − 4.6 GeV/c2 and 2 × 10−7 × 10−4s, respectively.

Original languageEnglish (US)
Pages (from-to)4083-4087
Number of pages5
JournalPhysical review letters
Volume79
Issue number21
DOIs
StatePublished - Nov 24 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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