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

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Di Marco, E. and Duarte, J. and Kcira, D. and Mott, A. and Newman, H. B. and Pena, C. and Rogan, C. and Spiropulu, M. and Timciuc, V. and Wilkinson, R. and Xie, S. and Zhu, R. Y. (2014) Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV. Journal of High Energy Physics, 2014 (3). Art. No. 32. ISSN 1126-6708. http://resolver.caltech.edu/CaltechAUTHORS:20140507-083910776

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## Abstract

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^(−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_(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.

Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/JHEP03(2014)032DOIArticle
http://arxiv.org/abs/1312.5729arXivAbstract
Group:CMS@Caltech
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Funding AgencyGrant Number
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