Measurement of the Forward-Backward Charge Asymmetry and Extraction of sin{sup 2}{theta}{sub W}{sup eff} in pp{yields}Z/{gamma}*+X{yields}e{sup +}e{sup -}+X Events Produced at {radical}(s)=1.96 TeV

Journal Article · Fri Nov 07 00:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.191801· OSTI ID:21179885

Abazov, V M; Alexeev, G D; Kharzheev, Y M; Malyshev, V L; Tokmenin, V V; Vertogradov, L S; Yatsunenko, Y A ^[1]; Abbott, B; Gutierrez, P; Hossain, S; Jain, S; Rominsky, M; Severini, H; Skubic, P; Strauss, M ^[2]; Abolins, M; Benitez, J A; Brock, R; Dyer, J; Edmunds, D ^[3]

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1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
3. Michigan State University, East Lansing, Michigan 48824 (United States)

We present a measurement of the forward-backward charge asymmetry (A{sub FB}) in pp{yields}Z/{gamma}*+X{yields}e{sup +}e{sup -}+X events at a center-of-mass energy of 1.96 TeV using 1.1 fb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron collider. A{sub FB} is measured as a function of the invariant mass of the electron-positron pair, and found to be consistent with the standard model prediction. We use the A{sub FB} measurement to extract the effective weak mixing angle sin{sup 2}{theta}{sub W}{sup eff}=0.2326{+-}0.0018(stat){+-}0.0006(syst)

• OSTI ID: 21179885
• Journal Information: Physical Review Letters, Vol. 101, Issue 19; Other Information: DOI: 10.1103/PhysRevLett.101.191801; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CENTER-OF-MASS SYSTEM
ELECTRONS
FERMILAB TEVATRON
PARTICLE DECAY
PARTICLE PRODUCTION
POSITRONS
PROTON-PROTON INTERACTIONS
STANDARD MODEL
TEV RANGE 01-10
WEINBERG ANGLE