Study of muons associated with jets in proton-antiproton collision at [square root]s = 1.8 TeV
Smith, David Austen
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https://hdl.handle.net/2142/23933
Description
Title
Study of muons associated with jets in proton-antiproton collision at [square root]s = 1.8 TeV
Author(s)
Smith, David Austen
Issue Date
1989
Doctoral Committee Chair(s)
Holloway, L.E.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
proton-antiproton collisions
hadronic jets
muon
meson decay
Language
en
Abstract
Production of heavy quark flavors in proton-antiproton collisions with a centerof-
mass energy of 1.8 x 1012 electron volts is studied for events containing
hadronic jets with a nearby muon track, where both the jet and the muon are
produced at large angles from the incident beams. The muon tracking system
and pattern recognition are described. Detailed calculations of the muon
background due to meson decay and hadron noninteractive punchthrough are
presented, and other background sources are evaluated. Distributions of muon
transverse momentum relative to the beam and to the jet axis agree with
QCD expectations for semileptonic charm and beauty decay. Muon identification
cuts and background subtraction leave 57.5 ± 17.1 muon-jet pairs, a
rate consistent with the established production cross sections for charm and
beauty quarks and the acceptance for minimum ionizing particles overlapping
with nearby jets. A small dimuon sample clarifies the muon signature. No signatures
of undiscovered phenomena are observed in this new energy domain.
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