Events with large missing transverse energy at the CERN collider: III. Mass limits on supersymmetric particles

UA1 Collaboration, R. Edgecock

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

A sample of events with large missing transverse energy from 715 nb-1 of data from the UA1 experiment at the CERN proton-antiproton collider is used to search for evidence of supersymmetric particle production. Assuming that the photino is the lightest supersymmetric particle and that it is massless, we find a limit on the squark mass of mq>45 GeV/c2 at 90% CL, independently of the gluino mass. Similarly, we find a limit on the gluino mass of mg>53 GeV/c2 (at 90% CL) independently of the squark mass, provided that the gluino is not long-lived (i.e. provided that the squark is not too heavy, mq{less-than or approximate}1 TeV/c2). For equal squark and gluino masses we find a limit mq=mg>75 GeV/c2 at 90% CL. The effect of a non-zero photino mass on these limits is studied.

Original languageEnglish
Pages (from-to)261-270
Number of pages10
JournalPhysics Letters B
Volume198
Issue number2
DOIs
Publication statusPublished - 19 Nov 1987
Externally publishedYes

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