B-quark production and dilepton cross sections at hadron colliders

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.2776· OSTI ID:6692514

Dimitriadis, P S; Papatsimpa, L B; Vlassopulos, S D.P.

We calculate the cross sections p-barp or pp..-->..(b..-->..l/sup 1/)(b-bar..-->..l/sup 2/)+X for like- and unlike-sign dileptons, l/sup 1/l/sup 2/ = l/sup +- /l/sup +- /,l/sup +- /l/sup minus-or-plus/, due to b-quark production, from CERN Collider to Superconducting Super Collider energies, taking into account (i) the QCD fusion processes qq-bar,gg..-->..bb-bar, (ii) the tree-level contributions to the decays b..--> mu..,c+X and the cascade process b..-->..c..--> mu.., the semileptonic branching fraction of the charm quark being fixed by data, and (iii) the fragmentation processes b..-->..B, softening the muon distributions by <..delta..p/p>approx. =20%. The small contributions due to charm production are also taken, approximately, into account. We present analytic formulas, admitting a simple intuitive interpretation, which, within theoretical uncertainties, agree with present measurements of the dimuon cross section at the CERN Collider, as well as with the results of Monte Carlo estimates of the ..mu../sup +- /..mu../sup +- //..mu../sup +/..mu../sup -/ ratio (given no B/sup 0/-B-bar /sup 0/ mixing) and the fraction of dimuons arising from cc-bar production.

• Research Organization: Department of Physics, University of Athens, GR-157 71 Kouponia, Athens, Greece
• OSTI ID: 6692514
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:9; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Strong Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
BRANCHING RATIO
CHARM PARTICLES
CROSS SECTIONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FRAGMENTATION
HADRON-HADRON INTERACTIONS
INTERACTIONS
LEPTONS
LINEAR MOMENTUM
MONTE CARLO METHOD
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PROTON-ANTIPROTON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SEMILEPTONIC DECAY
STORAGE RINGS
SUPERCONDUCTING SUPER COLLIDER
TRANSVERSE MOMENTUM
WEAK PARTICLE DECAY