Measurement of Angular Distributions of Drell-Yan Dimuons in p+d Interactions at 800 GeV/c

Journal Article · Fri Aug 24 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.082301· OSTI ID:21028160

Zhu, L Y ^[1]; Peng, J C ^[1]; Reimer, P E ^[2]; Awes, T C; Stankus, P W; Young, G R ^[3]; Brooks, M L; Carey, T A; Garvey, G T; Lee, D M; Leitch, M J; McGaughey, P L; Moss, J M; Park, B K; Sondheim, W E; Thompson, T N ^[4]; Brown, C N; Cooper, W E ^[5]; Bush, J D; Isenhower, L D ^[6]

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1. University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
4. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
5. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
6. Abilene Christian University, Abilene, Texas 79699 (United States)

We report a measurement of the angular distributions of Drell-Yan dimuons produced using an 800 GeV/c proton beam on a deuterium target. The muon angular distributions in the dilepton rest frame have been measured over the kinematic range 4.5<m{sub {mu}}{sub {mu}}<15 GeV/c{sup 2}, 0<p{sub T}<4 GeV/c, and 0<x{sub F}<0.8. No significant cos2{phi} dependence is found in these proton-induced Drell-Yan data, in contrast with the situation for pion-induced Drell-Yan data. The data are compared with expectations from models which attribute the cos2{phi} distribution to a QCD vacuum effect or to the presence of the transverse-momentum-dependent Boer-Mulders structure function h{sub 1}{sup perpendicular}. Constraints on the magnitude of the sea-quark h{sub 1}{sup perpendicular} structure functions are obtained.

• OSTI ID: 21028160
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
DEUTERIUM TARGET
DRELL MODEL
GEV RANGE 100-1000
MUONS
PIONS
PROTON BEAMS
PROTONS
QUANTUM CHROMODYNAMICS
QUARKS
STRUCTURE FUNCTIONS
TRANSVERSE MOMENTUM