Tevatron Run II combination of the effective leptonic electroweak mixing angle

0496787 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Abazov, V. M. - Abbott, B. - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Royon, C. … celkem 771 autorů
Tevatron Run II combination of the effective leptonic electroweak mixing angle.
Physical Review D. Roč. 97, č. 11 (2018), s. 1-20, č. článku 112007. ISSN 2470-0010. E-ISSN 2470-0029
Grant CEP: GA MŠMT LM2015068
Institucionální podpora: RVO:68378271
Klíčová slova: Drell-Yan process * gauge boson * programming * asymmetry * CDF * DZERO * experimental results
Obor OECD: Particles and field physics
Impakt faktor: 4.368, rok: 2018

Drell-Yan lepton pairs produced in the process pp¯→ℓ+ℓ-+X through an intermediate γ*/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 sin2θefflept 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, sin2θefflept=0.23148±0.00033. This result is consistent with, and approaches in precision, the best measurements from electron-positron colliders.
Trvalý link: http://hdl.handle.net/11104/0289431