Light-gluino scenario

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.33.57· OSTI ID:6279756

Barger, V; Jacobs, S; Woodside, J; Hagiwara, K

We investigate in detail the consequences of the supersymmetry scenario with a light (approx.5 GeV) gluino and heavy (approx.100 GeV) scalar quarks, including gluino distribution and fragmentation effects, proposed to explain large-missing-p/sub T/ events observed at the CERN pp-bar collider. The effective gluino distribution in the nucleon is evaluated using the Altarelli-Parisi equations. Ambiguities in evaluating scalar-quark production with the effective gluino distribution are discussed. A plausible gluino fragmentation function is deduced from heavy-quark fragmentation functions; scaling violations in the gluino fragmentation function are taken into account. Fragmentation effects drastically reduce the missing p/sub T/ in light-gluino jets. The present collider data do not rule out a light gluino with mass in the range of 3-5 GeV even if the g lifetime, from decay into a photino and a quark pair, is short.

• Research Organization: Physics Department, University of Wisconsin, Madison, Wisconsin 53706
• DOE Contract Number: AC02-76ER00881
• OSTI ID: 6279756
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 33:1; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BEAMS
COLLIDING BEAMS
ELEMENTARY PARTICLES
GLUONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
JET MODEL
LINEAR MOMENTUM
MATHEMATICAL MODELS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
PROTON-ANTIPROTON INTERACTIONS
QUARKS
SUPERSYMMETRY
SYMMETRY
TRANSVERSE MOMENTUM