Standard-model dimuon sources in pp-bar collisions

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.32.1128· OSTI ID:5429309

Barger, V; Phillips, R J.N.

Dimuon events observed at the CERN pp-bar collider offer an opportunity to check the QCD fusion mechanism for heavy-quark production at high p/sub T/, along with the Drell-Yan mechanism. We present predicted dimuon rates and distributions from these standard-model sources at ..sqrt..s = 630 GeV, for comparison with the forthcoming collider data. The like-sign/unlike-sign dimuon ratio from heavy quarks is sensitive to the details of fragmentation, as well as possible B/sup 0hyphen/B /sup 0/ mixing. The number of isolated dimuons to be expected from heavy-quark sources is a related question that we discuss. Preliminary data agree well with Drell-Yan predictions for isolated unlike-sign dimuons. For non-isolated dimuons the data lie about a factor 2 below our initial heavy-quark predictions, but this discrepancy is within theoretical uncertainties and can be removed by specific parameter choices. The reported like-sign isolated dimuons cannot be consistently interpreted as heavy-flavor decays without destroying agreement with the Drell-Yan model.

• Research Organization: Physics Department, University of Wisconsin, Madison, Wisconsin 53706
• OSTI ID: 5429309
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 32:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
COLOR MODEL
COMPOSITE MODELS
CROSS SECTIONS
DRELL MODEL
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
FLAVOR MODEL
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
INTERACTIONS
LEPTONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MUONS
NUCLEON-ANTINUCLEON INTERACTIONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
POSTULATED PARTICLES
PROTON-ANTIPROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SPIN
TOTAL CROSS SECTIONS
TRANSVERSE MOMENTUM