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Tevatron Run II combination of the effective leptonic electroweak mixing angle
Helsinki Inst Phys, FIN-00014 Helsinki, Finland;Univ Helsinki, Div High Energy Phys, Dept Phys, FIN-00014 Helsinki, Finland.
Joint Inst Nucl Res, RU-141980 Dubna, Russia.
Univ Oklahoma, Norman, OK 73019 USA.
Tata Inst Fundamental Res, Homi Bhabha Rd, Bombay 400005, Maharashtra, India.
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2018 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 97, no 11, article id 112007Article in journal (Refereed) Published
Abstract [en]

Drell-Yan lepton pairs produced in the process p (p) over bar -> l(+)l(-) + X through an intermediate gamma*/Z boson have an asymmetry in their angular distribution related to the spontaneous symmetry breaking of the electroweak force and the associated mixing of its neutral gauge bosons. The CDF and D0 experiments have measured the effective-leptonic electroweak mixing parameter sin(2) theta(lept)(eff) using electron and muon pairs selected from the full Tevatron proton-antiproton data sets collected in 2001-2011, corresponding to 9-10 fb(-1) of integrated luminosity. The combination of these measurements yields the most precise result from hadron colliders, sin(2)theta(lept)(eff) = 0.23148 +/- 0.00033. This result is consistent with, and approaches in precision, the best measurements from electron-positron colliders. The standard model inference of the on-shell electroweak mixing parameter sin(2) theta(W), or equivalently the W-boson mass M-W, using the ZFITTER software package yields sin(2) theta(W) = 0.22324 +/- 0.00033 or equivalently, M-W = 80.367 +/- 0.017 GeV/c(2).

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 97, no 11, article id 112007
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Subatomic Physics
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URN: urn:nbn:se:uu:diva-360446DOI: 10.1103/PhysRevD.97.112007ISI: 000436628000001OAI: oai:DiVA.org:uu-360446DiVA, id: diva2:1247899
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Swedish Research CouncilAvailable from: 2018-09-13 Created: 2018-09-13 Last updated: 2018-09-13Bibliographically approved

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Buszello, Claus P.

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