Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV

Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV

Double parton scattering is investigated in proton-proton collisions at √s = 7 TeV where the final state includes a W boson, which decays into a muon and a neutrino, and two jets. The data sample corresponds to an integrated luminosity of 5 fb[superscript −1], collected with the CMS detector at the...

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Bibliographic Details
Main Authors: Apyan, Aram, Busza, Wit, Cali, Ivan Amos, Chan, M., Di Matteo, Leonardo, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Gulhan, Doga Can, Klute, Markus, Lai, Yue Shi, Ma, Teng, Paus, Christoph M. E., Ralph, Duncan Kelley, Roland, Cristof E., Stephans, George S. F., Velicanu, Dragos Alexandru, Veverka, Jan, Wyslouch, Boleslaw, Yoon, A. S., Zanetti, Marco, Dutta, Valentina, Lee, Yen-Jie, Luckey Jr, P David, Sumorok, Konstanty C, Yang, Mingming, Roland, Christof E, Barbieri, Richard Alexander, Levin, Andrew Michael, Roland, Gunther M, Stoeckli, Fabian, Wyslouch, Victoria, Bauer, Gerry P
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Springer-Verlag 2014
Online Access:http://hdl.handle.net/1721.1/87678
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/0000-0002-6047-4211
https://orcid.org/0000-0002-7945-005X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0002-9418-6656
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:Double parton scattering is investigated in proton-proton collisions at √s = 7 TeV where the final state includes a W boson, which decays into a muon and a neutrino, and two jets. The data sample corresponds to an integrated luminosity of 5 fb[superscript −1], collected with the CMS detector at the LHC. Observables sensitive to double parton scattering are investigated after being corrected for detector effects and selection efficiencies. The fraction of W + 2-jet events due to double parton scattering is measured to be 0.055 ± 0.002 (stat.) ± 0.014 (syst.). The effective cross section, σ [subscript eff], characterizing the effective transverse area of hard partonic interactions in collisions between protons is measured to be 20.7 ± 0.8(stat.) ± 6.6(syst.)mb.

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