Publikation: Zeitschriftenartikel

Measurement of Z[tau]+[tau] production in proton-proton collisions at s=8 TeV

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	Measurement of Z[tau]+[tau] production in proton-proton collisions at s=8 TeV
Veröffentlicht in	Journal of high energy physics : JHEP : a refereed journal written, run, and distributed by electronic means, ISSN 1029-8479, ZDB-ID 2027350-2. - Berlin : Springer
Erscheinungsjahr	2018
Band	2018
Heft-Nr.	9
Jahr	2018
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1007/JHEP09(2018)159
Letzte Änderung	05.11.2021 06:01:52
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/57784
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Abstract

A measurement of Z + production cross-section is presented using data, corresponding to an integrated luminosity of 2 fb1, from pp collisions at s=8s=8 \sqrt{s}=8 TeV collected by the LHCb experiment. The + candidates are reconstructed in final states with the first tau lepton decaying leptonically, and the second decaying either leptonically or to one or three charged hadrons. The production cross-section is measured for Z bosons with invariant mass between 60 and 120 GeV/c2, which decay to tau leptons with transverse momenta greater than 20 GeV/c and pseudorapidities between 2.0 and 4.5. The cross-section is determined to be ppZ+=95.8±2.1±4.6±0.2±1.1ppZ+=95.8±2.1±4.6±0.2±1.1 {\sigma}_{pp}{{}_{\to Z\to {\tau}^{+}}}_{\tau^{-}}=95.8 \pm 2.1 \pm 4.6 \pm 0.2 \pm 1.1 pb, where the first uncertainty is statistical, the second is systematic, the third is due to the LHC beam energy uncertainty, and the fourth to the integrated luminosity uncertainty. This result is compatible with NNLO Standard model predictions. The ratio of the cross-sections for Z + to Z + (Z e+e), determined to be 1.01 ± 0.05 (1.02 ± 0.06), is consistent with the lepton-universality hypothesis in Z decays. Open image in new window

Autoren

Aaij, Roel
D'Argent, Philippe
Bachmann, Sebastian
Berninghoff, Daniel
Braun, Svende
De Cian, Michel
Comerma-Montells, Albert
Dordei, Francesca
Dziewiecki, Michal
Gerick, David
Grabowski, Jascha
Grünberg, Oliver
Han, Xiaoxue
Hansmann-Menzemer, Stephanie
Kecke, Matthieu
Khanji, Basem
Kolpin, Michael
Kopecná, Renata
Leverington, Blake
Marks, Jörg
Mitzel, Dominik
Neubert, Sebastian
Stahl, Marian
Piucci, Alessio
Stemmle, Simon
van Tilburg, Jeroen
Uwer, Ulrich
Viemann, Harald
Waldi, Roland
Zhelezov, Alexey
Skidmore, Nicola

Einrichtung

MNF/Institut für Physik (IfPH)