Abazov, V. M. ; Mondal, N. K. ; et, al (2011) Measurement of sin2θeffℓ and Z-light quark couplings using the forward-backward charge asymmetry in pp̅ →Z/γ *→e+e−events with L=5.0 fb−1 at √S=1.96 TeV Physical Review D - Particles, Fields, Gravitation and Cosmology, 84 (1). 012007_1-012007_14. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v84/i1/e012007
Related URL: http://dx.doi.org/10.1103/PhysRevD.84.012007
Abstract
We measure the mass dependence of the forward-backward charge asymmetry in 157 553 pp̅ →Z/γ*→e+e- interactions, corresponding to 5.0 fb−1 of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider at √S=1.96 TeV. The effective weak mixing angle (θeffℓ) from this process involving predominantly the first generation of quarks is extracted as sin2θeffℓ=0.2309±0.0008(stat.)±0.0006(syst.). We also present the most precise direct measurement of the vector and axial-vector couplings of u and d quarks to the Z boson.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 76205 |
| Deposited On: | 31 Dec 2011 08:24 |
| Last Modified: | 31 Dec 2011 08:24 |
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