Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-10-12
Phys. Rev. D 84, 112002 (2011)
Physics
High Energy Physics
High Energy Physics - Experiment
Scientific paper
10.1103/PhysRevD.84.112002
A multivariate likelihood method to measure electroweak couplings with the Drell-Yan process at the LHC is presented. The process is described by the dilepton rapidity, invariant mass, and decay angle distributions. The decay angle ambiguity due to the unknown assignment of the scattered constituent quark and antiquark to the two protons in a collision is resolved statistically using correlations between the observables. The method is applied to a sample of dimuon events from proton-proton collisions at sqrt(s) = 7 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 1.1 inverse femtobarns. From the dominant u-ubar, d-dbar to gamma*/Z to opposite sign dimuons process, the effective weak mixing angle parameter is measured to be sin^2(theta[eff]) = 0.2287 +/- 0.0020 (stat.) +/- 0.0025 (syst.). This result is consistent with measurements from other processes, as expected within the standard model.
No associations
LandOfFree
Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-634145