A Search for Light Super Symmetric Baryons

TL;DR

This study searched for light super-symmetric baryons in high-energy proton interactions but found no evidence, setting upper limits on their production rates within certain mass and lifetime ranges.

Contribution

First experimental search for light super-symmetric baryons in proton interactions, establishing upper limits on their production rates across various mass and lifetime ranges.

Findings

No evidence for the targeted super-symmetric baryons was observed.

Production upper limits are less than 10^-3 of all charged particles for most mass and lifetime ranges.

Constraints on super-symmetric baryon production help refine theoretical models.

Abstract

We have searched for the production and decay of light super-symmetric baryons produced in 800 GeV/c proton copper interactions in a charged hyperon beam experiment. We observe no evidence for the decays R+(uud \g^~) -> S(uds \g^~) pi+ and X-(ssd \g^~) -> S(uds \g^~) pi- in the predicted parent mass and lifetime ranges of 1700-2500 Mev/c2 and 50-500 ps. Production upper limits for R+ at xF=0.47, Pt=1.4 GeV/c2 and X- at xF=0.48, Pt=0.65 GeV/c2 of less than 10^-3 of all charged secondary particles produced are obtained for all but the highest masses and shortest lifetimes predicted.