Supersymmetric QCD corrections to quark pair production in [ital e][sup +][ital e[minus]] annihilation

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.3081· OSTI ID:6277437

Djouadi, A ^[1]; Drees, M ^[2]; Koenig, H ^[3]

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1. Laboratoire de Physique Nucleaire, Universite de Montreal, Case 6128A, H3C 3J7 Montreal PQ (Canada)
2. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (United States)
3. Department of Physics, Carleton University, Ottawa, K1S 5B6 (Canada)

We calculate supersymmetric QCD corrections (squark and gluino loops) to quark pair production in [ital e][sup +][ital e[minus]] annihilation, allowing for mixing between left- and right-handed squarks and taking into account the effects of nonzero quark masses. Corrections to the [ital Z] boson partial widths are generally small and positive, except in the case of large [ital [tilde b]] squark mixing, where they become negative. At high-energy [ital e][sup +][ital e[minus]] colliders, larger corrections to the total cross sections are possible. Corrections to forward-backward asymmetries are negligible except possibly for top quarks, where they are sensitive to [ital [tilde t]] squark mixing. We also comment on the possibility that the gluino mass is only a few GeV.

• DOE Contract Number: AC02-76ER00881
• OSTI ID: 6277437
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:7; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

662230* -- Quantum Chromodynamics-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
CORRECTIONS
CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON-LEPTON INTERACTIONS
MASS
MIXING
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SUPERSYMMETRY
SYMMETRY
TOTAL CROSS SECTIONS
Z NEUTRAL BOSONS