Publikation: Zeitschriftenartikel

Measurement of the forward-backward asymmetry in Z/ + decays and determination of the effective weak mixing angle

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	Measurement of the forward-backward asymmetry in Z/ + decays and determination of the effective weak mixing angle
Veröffentlicht in	Journal of high energy physics : JHEP ; a refereed journal written, run, and distributed by electronic means. - Berlin : Springer
Erscheinungsjahr	2015
Seiten (von – bis)	1 – 18
Heft-Nr.	11
Jahr	2015
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1007/JHEP11(2015)190
Letzte Änderung	19.05.2021 06:01:47
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/50605
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Abstract

The forward-backward charge asymmetry for the process $$ q\overline{q}\to Z/{\gamma}^{\ast}\to {\mu}^{+}{\mu}^{-} $$is measured as a function of the invariant mass of the dimuon system. Measurements are performed using proton proton collision data collected with the LHCb detector at $$ \sqrt{s}=7 $$and 8 TeV, corresponding to integrated luminosities of 1 fb1 and 2 fb1 respectively. Within the Standard Model the results constrain the effective electroweak mixing angle to besin2Weff=0.23142±0.00073±0.00052±0.00056,$$ { \sin}^2{\theta}_{\mathrm{W}}^{\mathrm{eff}}=0.23142\pm 0.00073\pm 0.00052\pm 0.00056, $$where the first uncertainty is statistical, the second systematic and the third theoretical. This result is in agreement with the current world average, and is one of the most precise determinations at hadron colliders to date.

Autoren

Aaij, Roel
Aquines Gutiérrez, Osvaldo
D'Argent, Philippe
Bachmann, Sebastian
Bien, Alexander
Blouw, Johan
Braun, Svende
Britsch, Markward
Comerma-Montells, Albert
De Cian, Michel
Dordei, Francesca
Esen, Sevda
Gerick, David
Gersabeck, Evelina
Grillo, Lucia
Han, Xiaoxue
Hansmann-Menzemer, Stephanie
Jäger, Andreas
Kecke, Matthieu
Kolpin, Michael
Kreplin, Katharina
Krocker, Georg Alexander
Leverington, Blake
Marks, Jörg
Meißner, Marco
Mitzel, Dominik
Neubert, Sebastian
Neuner, Max
Nikodem, Thomas
Piucci, Alessio
Schmelling, Michael
Stahl, Marian
Uwer, Ulrich
Vesterinen, Mika
Voß, Christian
Waldi, Roland
Wandernoth, Sebastian
Zhelezov, Alexey

Einrichtung

MNF/Institut für Physik (IfPH)