Measurement of the azimuthal angle distribution of leptons from W boson decays as a function of the W transverse momentum in pp collisions at √(s)=1.8 TeV
Creators
- 1. University of Florida, Gainesville, Florida 32611 (United States)
- 2. University of California at Santa Barbara, Santa Barbara, California 93106 (United States)
- 3. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
Description
We present the first measurement of the A2 and A3 angular coefficients of the W boson produced in proton-antiproton collisions. We study W→eνe and W→μνμ candidate events produced in association with at least one jet at CDF, during Run Ia and Run Ib of the Tevatron at √(s)=1.8 TeV. The corresponding integrated luminosity was 110 pb-1. The jet balances the transverse momentum of the W and introduces QCD effects in W boson production. The extraction of the angular coefficients is achieved through the direct measurement of the azimuthal angle of the charged lepton in the Collins-Soper rest-frame of the W boson. The angular coefficients are measured as a function of the transverse momentum of the W boson. The electron, muon, and combined results are in good agreement with the standard model prediction, up to order αs2 in QCD
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.73.052002;
- arXiv
- arXiv:hep-ex/0504020v1;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 73
- Journal Issue
- 5
- Journal Page Range
- p. 052002-052002.29
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37081027
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- DISTRIBUTION; ELECTRONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; INCLUSIVE INTERACTIONS; JET MODEL; LEPTONIC DECAY; MESONS; MUONS; PROTON-ANTIPROTON INTERACTIONS; PROTON-PROTON INTERACTIONS; QUANTUM CHROMODYNAMICS; STANDARD MODEL; TEV RANGE; TRANSVERSE MOMENTUM; W MINUS BOSONS; W PLUS BOSONS
- Descriptors DEC
- ACCELERATORS; BARYON-BARYON INTERACTIONS; BASIC INTERACTIONS; BOSONS; CYCLIC ACCELERATORS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTONS; LINEAR MOMENTUM; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; NUCLEON-ANTINUCLEON INTERACTIONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PROTON-NUCLEON INTERACTIONS; QUANTUM FIELD THEORY; RADIATION DETECTORS; SYNCHROTRONS; UNIFIED GAUGE MODELS; WEAK INTERACTIONS; WEAK PARTICLE DECAY
Optional Information
- Notes
- (c) 2006 The American Physical Society