Tevatron Run II combination of the effective leptonic electroweak mixing angle

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Pysyväisosoite

http://hdl.handle.net/10138/243964

Lähdeviite

CDF Collaboration , D0 Collaboration , Aaltonen , T , Abazov , V M , Brücken , E , Devoto , F , Mehtälä , P & Orava , R 2018 , ' Tevatron Run II combination of the effective leptonic electroweak mixing angle ' , Physical Review D , vol. 97 , no. 11 , 112007 . https://doi.org/10.1103/PhysRevD.97.112007

Julkaisun nimi: Tevatron Run II combination of the effective leptonic electroweak mixing angle
Tekijä: CDF Collaboration; D0 Collaboration; Aaltonen, T.; Abazov, V. M.; Brücken, E.; Devoto, F.; Mehtälä, P.; Orava, R.
Muu tekijä: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
University of Helsinki, Helsinki Institute of Physics
Päiväys: 2018-06-28
Kieli: eng
Sivumäärä: 20
Kuuluu julkaisusarjaan: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/243964
Tiivistelmä: 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).
Avainsanat: 114 Physical sciences
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