Measurement of electroweak production of two jets in association with a Z boson in proton–proton collisions at √s = 8 TeV

Measurement of electroweak production of two jets in association with a Z boson in proton–proton collisions at √s = 8 TeV

The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton–proton collisions at √s = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 fb[superscript -1]. The electrow...

Full description

Bibliographic Details
Main Authors: Apyan, Aram, Barbieri, Richard Alexander, Busza, Wit, Cali, Ivan Amos, Di Matteo, Leonardo, Dutta, Valentina, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Klute, Markus, Lai, Yue Shi, Lee, Yen-Jie, Levin, Andrew Michael, Ma, Teng, Paus, Christoph M. E., Ralph, Duncan Kelley, Stephans, George S. F., Velicanu, Dragos Alexandru, Veverka, Jan, Wyslouch, Boleslaw, Yang, Mingming, Zanetti, Marco, Gulhan, Doga Can, Wyslouch, Victoria, Bauer, Gerry P, Chan, M., Luckey Jr, P David, Roland, Christof E, Roland, Gunther M, Stoeckli, Fabian, Sumorok, Konstanty C
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Springer-Verlag 2015
Online Access:http://hdl.handle.net/1721.1/96831
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0002-7945-005X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0003-1486-606X
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0001-9236-6621
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0002-1136-6900
Description
Summary:The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton–proton collisions at √s = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 fb[superscript -1]. The electroweak cross section for the ℓℓ[subscript jj] final state (with ℓ = e or μ and j representing the quarks produced in the hard interaction) in the kinematic region defined by M[subscript ℓℓ] > 50 GeV, M[subscript jj] > 120 GeV, transverse momentum p[subscript Tj] > 25 GeV, and pseudorapidity |η[subscript j]|<5, is found to be σ[subscript EW](ℓℓ[subscript jj]) = 174 ± 15 (stat) ± 40(syst) \,fb, in agreement with the standard model prediction. The associated jet activity of the selected events is studied, in particular in a signal-enriched region of phase space, and the measurements are found to be in agreement with QCD predictions.

Similar Items