High-mass dimuon production in p-barN and. pi. /sup -/N interactions at 125 GeV/c

Journal Article · Thu Sep 01 00:00:00 EDT 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.1377· OSTI ID:7124759

Anassontzis, E; Katsanevas, S; Kiritsis, E; Kourkoumelis, C; Markou, A; Resvanis, L K; Voulgaris, G; Binkley, M; Cox, B; Enagonio, J; others, and

We have studied muon pairs with an invariant mass between 4 and 9 GeV/c/sup 2/ produced in p-barN and ..pi../sup -/N interactions at an incident momentum of 125 GeV/c. The experiment was performed at Fermilab using a tungsten target and a special beam enriched to contain 18% antiprotons. We compare differential distributions as functions of the dimuon invariant mass, Feynman x, transverse momentum, and decay angles of the dimuon to the predictions of the Drell-Yan model including QCD corrections. Quark structure functions for the p-bar and ..pi../sup -/ are extracted. Comparisons of the antiproton data to the Drell-Yan model are significant because the cross sections depend principally on the valence-quark structure functions which are accurately determined by deep-inelastic scattering measurements. The measured absolute cross section (integrated over positive Feynman x and all transverse momenta) is 0.106 +- 0.005 +- 0.008 nb/nucleon for the p-barN interaction and 0.107 +- 0.003 +- 0.009 nb/nucleon for the ..pi../sup -/N interaction, where the quoted errors are statistical and systematic, respectively. Normalization (K) factors that are required to bring the naive Drell-Yan and first-order QCD predictions into agreement with the measurements are extracted, and the uncertainties involved in such comparisons are examined.

• Research Organization: University of Athens, Athens, Greece
• OSTI ID: 7124759
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANNIHILATION
ANTINUCLEON REACTIONS
ANTIPROTON REACTIONS
BARYON REACTIONS
BASIC INTERACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DECAY
DISTRIBUTION
DRELL MODEL
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
FUNCTIONS
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
LEPTONS
LINEAR MOMENTUM
MESON REACTIONS
MUONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PION MINUS REACTIONS
PION REACTIONS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
STRUCTURE FUNCTIONS
TRANSVERSE MOMENTUM