TY - JOUR
T1 - Measurement of W+W−W+W− production in association with one jet in proton--proton collisions at s√=8s=8 TeV with the ATLAS detector
AU - Cox, Brian
AU - Watts, Stephen
AU - Wyatt, Terence
AU - Da Via, Cinzia
AU - Pater, Joleen
AU - Pilkington, Andrew
AU - Price, Darren
AU - Oh, Alexander
AU - ATLAS Collaboration
PY - 2016/10/14
Y1 - 2016/10/14
N2 - The production of W boson pairs in association with one jet in pp collisions at s=8TeV is studied using data corresponding to an integrated luminosity of 20.3 fb−1 collected by the ATLAS detector during 2012 at the CERN Large Hadron Collider. The cross section is measured in a fiducial phase-space region defined by the presence of exactly one electron and one muon, missing transverse momentum and exactly one jet with a transverse momentum above 25 GeV and a pseudorapidity of |η|<4.5. The leptons are required to have opposite electric charge and to pass transverse momentum and pseudorapidity requirements. The fiducial cross section is found to be σWWfid,1-jet=136±6(stat)±14(syst)±3(lumi)fb. In combination with a previous measurement restricted to leptonic final states with no associated jets, the fiducial cross section of WW production with zero or one jet is measured to be σWWfid,≤1-jet=511±9(stat)±26(syst)±10(lumi)fb. The ratio of fiducial cross sections in final states with one and zero jets is determined to be 0.36±0.05. Finally, a total cross section extrapolated from the fiducial measurement of WW production with zero or one associated jet is reported. The measurements are compared to theoretical predictions and found in good agreement.
AB - The production of W boson pairs in association with one jet in pp collisions at s=8TeV is studied using data corresponding to an integrated luminosity of 20.3 fb−1 collected by the ATLAS detector during 2012 at the CERN Large Hadron Collider. The cross section is measured in a fiducial phase-space region defined by the presence of exactly one electron and one muon, missing transverse momentum and exactly one jet with a transverse momentum above 25 GeV and a pseudorapidity of |η|<4.5. The leptons are required to have opposite electric charge and to pass transverse momentum and pseudorapidity requirements. The fiducial cross section is found to be σWWfid,1-jet=136±6(stat)±14(syst)±3(lumi)fb. In combination with a previous measurement restricted to leptonic final states with no associated jets, the fiducial cross section of WW production with zero or one jet is measured to be σWWfid,≤1-jet=511±9(stat)±26(syst)±10(lumi)fb. The ratio of fiducial cross sections in final states with one and zero jets is determined to be 0.36±0.05. Finally, a total cross section extrapolated from the fiducial measurement of WW production with zero or one associated jet is reported. The measurements are compared to theoretical predictions and found in good agreement.
UR - https://www.scopus.com/pages/publications/85006626464
U2 - 10.1016/j.physletb.2016.10.014
DO - 10.1016/j.physletb.2016.10.014
M3 - Article
SN - 0370-2693
VL - 763
SP - 114
EP - 133
JO - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -