Asymmetry effects of supersymmetric QCD in dilepton production

Journal Article · Mon Apr 01 04:00:00 EST 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.31.1638· OSTI ID:5837286

Contogouris, A P; Tanaka, H

A Callan-Gross-type relation between the structure functions determining dilepton production, which is satisfied by the basic O(1) and O(..cap alpha../sub s/) subprocesses of conventional QCD, is investigated in supersymmetric QCD (SQCD). It is found that SQCD subprocesses, mainly due to the presence of scalar quarks, strongly violate this relation, thus leading to sizable asymmetry effects in the angular distribution of dileptons. As an illustration, calculations are carried for p-barp..-->..l/sup +/l/sup -/+X at CERN collider and Fermilab Tevatron energies (..sqrt..s = 540 and 1600 GeV, respectively) and for pp..-->..l/sup +/l/sup -/+X at Tevatron energy; with scalar quarks of mass 20 GeV and light gluinos, asymmetries in the range of 20%--5% are found. The significance of the effects as a test of the short-distance structure of SQCD (valence part of the scalar-quark distribution) is discussed.

• Research Organization: Department of Physics, McGill University, Montreal, Canada H3A 2T8
• OSTI ID: 5837286
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 31:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645303 -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Strong Interactions-- (-1987)
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ASYMMETRY
BARYON-BARYON INTERACTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
LEPTONS
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
POSTULATED PARTICLES
PROTON-ANTIPROTON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
STRUCTURE FUNCTIONS
SUPERSYMMETRY
SYMMETRY