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Studies of W boson plus jets production in p(p)over-bar collisions at root s=1.96 TeV
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2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 88, no 9, 092001- p.Article in journal (Refereed) Published
Abstract [en]

We present a comprehensive analysis of inclusive W(-> ev) + 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 3.7 fb(-1) data set collected by the D0 detector. Differential cross sections are presented as a function of the jet rapidities (y), lepton transverse momentum (P-T) and pseudorapidity (eta), the scalar sum of the transverse energies of the W boson and all jets (H-T), leading dijet P-T and invariant mass, dijet rapidity separations for a variety of jet pairings for P-T-ordered and angular-ordered jets, dijet opening angle, dijet azimuthal angular separations for P-T-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 H-T, and as a function of the rapidity separations between the two highest-P-T 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 P-T 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.

Place, publisher, year, edition, pages
2013. Vol. 88, no 9, 092001- p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-212319DOI: 10.1103/PhysRevD.88.092001ISI: 000326512800001OAI: oai:DiVA.org:uu-212319DiVA: diva2:677673
Available from: 2013-12-10 Created: 2013-12-09 Last updated: 2013-12-10Bibliographically approved

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Buszello, Claus P
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