Studies of $W$ boson plus jets production in $pp$ collisions at $s=1.96TeV$

UNSPECIFIED (2013) Studies of $W$ boson plus jets production in $pp$ collisions at $s=1.96TeV$. Physical Review D, 88 (9): 092001. ISSN 1550-7998

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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 3.7  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 (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.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
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© 2013 American Physical Society
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Deposited On:
02 Dec 2013 14:54
Last Modified:
23 Jan 2024 01:49