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Estimating the impact of mixed QCD-electroweak corrections on the W -mass determination at the LHC

Behring, Arnd 1; Buccioni, Federico; Caola, Fabrizio; Delto, Maximilian ORCID iD icon 1; Jaquier, Matthieu 1; Melnikov, Kirill 1; Röntsch, Raoul
1 Institut für Theoretische Teilchenphysik (TTP), Karlsruher Institut für Technologie (KIT)

Abstract:

We study the impact of the recently computed mixed QCD-electroweak corrections to the production of W and Z bosons at the LHC on the value of the W mass extracted from the transverse momentum distribution of charged leptons from W decays. Using the average lepton transverse momenta in W and Z decays as simplified observables for the determination of the W mass, we estimate that mixed QCD-electroweak corrections can shift the extracted value of the W mass by up to O(20)  MeV, depending on the kinematic cuts employed to define fiducial cross sections for Z and W production. Since the target precision of the W-mass measurement at the LHC is O(10) MeV, our results emphasize the need for fully differential computations of mixed QCD-electroweak corrections and a careful analysis of their potential impact on the determination of the W mass.


Verlagsausgabe §
DOI: 10.5445/IR/1000134278
Veröffentlicht am 23.06.2021
Originalveröffentlichung
DOI: 10.1103/PhysRevD.103.113002
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2470-0010, 0556-2821, 1089-4918, 1538-4500, 1550-2368, 1550-7998, 2470-0029
KITopen-ID: 1000134278
Erschienen in Physical Review D
Verlag American Physical Society (APS)
Band 103
Heft 11
Seiten 113002
Nachgewiesen in Dimensions
Web of Science
Scopus
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