Measurement of sin2 θℓeff and Z-light quark couplings using the forward-backward charge asymmetry in pp -> Z/gamma* -> e+e- events with L=5.0 fb-1 at √s=1.96 TeV
Journal Article
·
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
- et al.
We measure the mass dependence of the forward-backward charge asymmetry in 157,553 pp = 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 (θℓeff) from this process involving predominantly the first generation of quarks is extracted as sin2 θℓeff = 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.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- D0 Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1016225
- Alternate ID(s):
- OSTI ID: 1100404
- Report Number(s):
- FERMILAB-PUB-11-190-E; arXiv eprint number arXiv:1104.4590; TRN: US1103032
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 84, Issue 1; ISSN 1550-7998
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 32 works
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