Studies of W boson plus jets production in p\bar{p} collisions at sqrt(s)=1.96 TeV
V.M. Abazov
,
U. Bassler
(1)
,
G. Bernardi
(2)
,
M. Besançon
(1)
,
D. Brown
(2)
,
E. Chapon
(1)
,
F. Deliot
(1)
,
Y. Enari
(2)
,
S. Greder
(3)
,
G. Grenier
(4)
,
A. Grohsjean
(1)
,
Z. Hubacek
(1)
,
T. Kurca
(4)
,
P. Lebrun
(4)
,
J. Lellouch
(2)
,
D. Li
(2)
,
F. Miconi
(3)
,
I. Ripp-Baudot
(3)
,
C. Royon
(1)
,
V. Shary
(1)
,
M. Titov
(1)
,
B. Tuchming
(1)
,
D. Vilanova
(1)
,
L. Zivkovic
(2)
,
G. Sajot
(5)
,
J. Stark
(5)
,
F. Badaud
(6)
,
Ph. Gris
(6)
,
J.-F. Grivaz
(7)
,
T. Guillemin
(7)
,
M. Jaffré
(7)
,
P. Pétroff
(7)
,
M.-C. Cousinou
(8)
,
A. Duperrin
(8)
,
W. Geng
(8)
,
E. Kajfasz
(8)
,
S. Kermiche
(8)
,
E. Nagy
(8)
,
N. Osman
(8)
1
IRFU -
Institut de Recherches sur les lois Fondamentales de l'Univers
2 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 IPNL - Institut de Physique Nucléaire de Lyon
5 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
6 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
7 LAL - Laboratoire de l'Accélérateur Linéaire
8 CPPM - Centre de Physique des Particules de Marseille
2 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 IPNL - Institut de Physique Nucléaire de Lyon
5 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
6 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
7 LAL - Laboratoire de l'Accélérateur Linéaire
8 CPPM - Centre de Physique des Particules de Marseille
V.M. Abazov
- Function : Author
G. Bernardi
- Function : Author
- PersonId : 1374140
- ORCID : 0000-0002-2837-2442
- IdRef : 088561623
P. Lebrun
- Function : Author
- PersonId : 741027
- IdHAL : patrice-jean-marie-lebrun
- ORCID : 0000-0001-6115-5856
V. Shary
- Function : Author
- PersonId : 753233
- IdHAL : viatcheslav-sharyy
E. Kajfasz
- Function : Author
- PersonId : 742630
- IdHAL : eric-kajfasz
- ORCID : 0000-0002-8575-405X
- IdRef : 150389043
Abstract
We present a comprehensive analysis of inclusive W(\to e\nu)+n-jet (n\geq 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} dataset 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.