Studies of W boson plus jets production in pp¯ collisions at s=1.96TeV
Abstract
We present a comprehensive analysis of inclusive W(→eν)+n-jet (n≥1, 2, 3, 4) production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV at the Tevatron collider using a 3.7fb-1 data set collected by the D0 detector. Differential cross sections are presented as a function of the jet rapidities (y), lepton transverse momentum (pT) and pseudorapidity (η), the scalar sum of the transverse energies of the W boson and all jets (HT), leading dijet pT and invariant mass, dijet rapidity separations for a variety of jet pairings for pT-ordered and angular-ordered jets, dijet opening angle, dijet azimuthal angular separations for pT-ordered and angular-ordered jets, and W boson transverse momentum. The mean number of jets in an event containing a W boson is measured as a function of HT, and as a function of the rapidity separations between the two highest-pT jets and between the most widely separated jets in rapidity. Finally, the probability for third-jet emission in events containing a W boson and at least two jets is studied by measuring the fraction of events in the inclusive W+2-jet sample that contain a third jet over a pT threshold. The analysis employs a regularized singular value decomposition technique to accurately correct for detector effects and for the presence of backgrounds. The corrected data are compared to particle level next-to-leading-order perturbative QCD predictions, predictions from all-order resummation approaches, and a variety of leading-order and matrix element plus parton shower event generators. Regions of the phase space where there is agreement or disagreement with the data are discussed for the different models tested.
- Publication:
-
Physical Review D
- Pub Date:
- November 2013
- DOI:
- 10.1103/PhysRevD.88.092001
- arXiv:
- arXiv:1302.6508
- Bibcode:
- 2013PhRvD..88i2001A
- Keywords:
-
- 12.38.Qk;
- 13.85.Qk;
- 13.87.Ce;
- 14.70.Fm;
- Experimental tests;
- Inclusive production with identified leptons photons or other nonhadronic particles;
- Production;
- W bosons;
- High Energy Physics - Experiment
- E-Print:
- 30 pages plus author list (plus 84 pages auxiliary material for 114 pages total), 27 figures, 1 table, submitted to Phys. Rev. D