Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at √s = 8 TeV

Open access
Author
CMS Collaboration
Khachatryan, Vardan
Bachmair, Felix
Bäni, Lukas
Bianchini, Lorenzo
Bortignon, Pierluigi
Buchmann, Marco A.
Casal, Bruno
Chanon, Nicolas
Deisher, Amanda
Dissertori, Günther
Dittmar, Michael
Donegà, Mauro
Dünser, Marc
Eller, Philipp
Grab, Christoph
Hits, Dmitry
Lustermann, Werner
Mangano, Boris
Marini, Andrea C.
Martinez Ruiz del Arbol, Pablo
Meister, Daniel
Mohr, Niklas
Nägeli, Christoph
Nef, Pascal
Nessi-Tedaldi, Francesca
Pandolfi, Francesco
Pauss, Felicitas
Peruzzi, Marco
Quittnat, Milena
Rebane, Liis
Ronga, Fédéric J.
Rossini, Marco
Starodumov, Andrey
Takahashi, Maiko
Theofilatos, Konstantinos
Wallny, Rainer
et al.
Date
2015-01Type
- Journal Article
Citations
Cited 40 times in
Web of Science
Cited 50 times in
Scopus
ETH Bibliography
yes
Altmetrics
Abstract
A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton-proton collisions at s=8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6fb -1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ→ℓℓℓ ' ℓ ', where ℓ = e, μ and ℓ ' = e, μ, τ. The measured total cross section σ(pp→ZZ)=7.7±0.5 (stat)-0.4+0.5 (syst)±0.4(theo)±0.2 (lumi) pb, for both Z bosons produced in the mass range 60 < mZ < 120 GeV, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZγ couplings at the 95% confidence level: -0.004<f4Z<0.004, -0.004<f5Z<0.004, -0.005<f4γ<0.005, and -0.005<f5γ<0.005. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000094199Publication status
publishedJournal / series
Physics Letters BVolume
Pages / Article No.
Publisher
ElsevierSubject
CMS; Physics; ElectroweakOrganisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
More
Show all metadata
Citations
Cited 40 times in
Web of Science
Cited 50 times in
Scopus
ETH Bibliography
yes
Altmetrics