Search for light gluinos via decays containing pi(+) pi(-) or pi(0) from aneutral hadron beam at fermilab

Citation
A. Alavi-harati et al., Search for light gluinos via decays containing pi(+) pi(-) or pi(0) from aneutral hadron beam at fermilab, PHYS REV L, 83(11), 1999, pp. 2128-2132
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
83
Issue
11
Year of publication
1999
Pages
2128 - 2132
Database
ISI
SICI code
0031-9007(19990913)83:11<2128:SFLGVD>2.0.ZU;2-S
Abstract
We report on two null searches, one for the spontaneous appearance of pi(+) pi(-) pails, another for a single pi(0), consistent with the decay of a lon g-lived neutral particle into hadrons and an unseen neutral particle. For t he lowest level gluon-gluino bound state, known as the R-0, we exclude the decays R-0 --> pi(+) pi(-) <(gamma)over tilde> and R-0 --> pi(0)<(gamma)ove r tilde> for the masses of R-0 and <(gamma)over tilde> in the theoretically allowed range. In the most interesting R-0 mass range, less than or equal to 3 GeV/c(2), we exclude R-0 lifetimes from 3 x 10(-10) sec to as high as 10(-3) sec, assuming perturbative QCD production for the R-0.