Study of double parton scattering using W+2-jet events in proton-proton collisions at root s=7 TeV
JOURNAL OF HIGH ENERGY PHYSICS, vol.2014, no.3, 2014 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 2014 Issue: 3
- Publication Date: 2014
- Doi Number: 10.1007/jhep03(2014)032
- Journal Name: JOURNAL OF HIGH ENERGY PHYSICS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Keywords: Jet physics, Hadron-Hadron Scattering, QCD
- Open Archive Collection: AVESIS Open Access Collection
- Dokuz Eylül University Affiliated: Yes
Abstract
Double parton scattering is investigated in proton-proton collisions at = 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, sigma (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.