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

Authors

• S. Chatrchyan, Yerevan Physics Institute
• Ekaterina Avdeeva, University of Nebraska-LincolnFollow
• Kenneth A. Bloom, University of Nebraska - LincolnFollow
• S. Bose, University of Nebraska-LincolnFollow
• Daniel R. Claes, University of Nebraska-LincolnFollow
• Aaron Dominguez, University of Nebraska-LincolnFollow
• Rebeca Gonzalez Suarez, University of Nebraska-LincolnFollow
• J. Keller, University of Nebraska-LincolnFollow
• D. Knowlton, University of Nebraska-LincolnFollow
• Ilya Kravchenko, University of Nebraska-LincolnFollow
• J. Lazo-Flores, University of Nebraska-LincolnFollow
• S. Malik, University of Nebraska-LincolnFollow
• F. Meier, University of Nebraska-LincolnFollow
• Gregory R. Snow, University of Nebraska-LincolnFollow
• CMS collaboration, CMS collaboration

Document Type

Article

Date of this Version

3-5-2014

Citation

JHEP03(2014)032; doi:10.1007/JHEP03(2014)032

Comments

Copyright © 2014 CERN, issued under CC license; published by Springer.

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.