Measurement of the production cross section for a W boson and two b jets in pp collisions at sqrt(s) = 7 TeV
S. Chatrchyan
,
S. Baffioni
(1)
,
F. Beaudette
(1)
,
L. Benhabib
(1)
,
M. Bluj
(1)
,
P. Busson
(1)
,
C. Charlot
(1)
,
N. Daci
(1)
,
T. Dahms
(1)
,
M. Dalchenko
(1)
,
L. Dobrzynski
(1)
,
A. Florent
(1)
,
R. Granier de Cassagnac
(1)
,
M. Haguenauer
(1)
,
P. Mine
(1)
,
C. Mironov
(1)
,
I.N. Naranjo
(1)
,
M. Nguyen
(1)
,
C. Ochando
(1)
,
P. Paganini
(1)
,
D. Sabes
(1)
,
R. Salerno
(1)
,
Y. Sirois
(1)
,
C. Veelken
(1)
,
A. Zabi
(1)
,
J.-L. Agram
(2)
,
J. Andrea
(2)
,
D. Bloch
(2)
,
J.-M. Brom
(2)
,
E.C. Chabert
(2)
,
C. Collard
(2)
,
E. Conte
(2)
,
F. Drouhin
(2)
,
J.-C. Fontaine
(2)
,
D. Gele
(2)
,
U. Goerlach
(2)
,
C. Goetzmann
(2)
,
P. Juillot
(2)
,
A.-C. Le Bihan
(2)
,
P. van Hove
(2)
,
S. Gadrat
(3)
,
S. Beauceron
(4)
,
N. Beaupere
(4)
,
G. Boudoul
(4)
,
S. Brochet
(4)
,
J. Chasserat
(4)
,
R. Chierici
(4)
,
D. Contardo
(4)
,
P. Depasse
(4)
,
H. El Mamouni
(4)
,
J. Fan
(4)
,
J. Fay
(4)
,
S. Gascon
(4)
,
M. Gouzevitch
(4)
,
B. Ille
(4)
,
T. Kurca
(4)
,
M. Lethuillier
(4)
,
L. Mirabito
(4)
,
S. Perries
(4)
,
J.D. Ruiz Alvarez
(4)
,
L. Sgandurra
(4)
,
V. Sordini
(4)
,
M. Vander Donckt
(4)
,
P. Verdier
(4)
,
S. Viret
(4)
,
H. Xiao
(4)
S. Chatrchyan
- Function : Author
P. Busson
- Function : Author
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R. Granier de Cassagnac
- Function : Author
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C. Mironov
- Function : Author
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P. Paganini
- Function : Author
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- IdHAL : pascal-paganini
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J.-L. Agram
- Function : Author
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C. Collard
- Function : Author
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E. Conte
- Function : Author
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P. van Hove
- Function : Author
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- IdHAL : pierre-van-hove
- ORCID : 0000-0002-2431-3381
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M. Gouzevitch
- Function : Author
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- IdHAL : maxime-gouzevitch
- ORCID : 0000-0002-5524-880X
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M. Lethuillier
- Function : Author
- PersonId : 740178
- IdHAL : morgan-lethuillier
- ORCID : 0000-0001-6185-2045
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V. Sordini
- Function : Author
- PersonId : 739810
- IdHAL : viola-sordini
- ORCID : 0000-0003-0885-824X
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P. Verdier
- Function : Author
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- IdHAL : patrice-verdier
- ORCID : 0000-0003-3090-2948
- IdRef : 098525859
Abstract
The production cross section for a W boson and two b jets is measured using proton-proton collisions at sqrt(s) = 7 TeV in a data sample collected with the CMS experiment at the LHC corresponding to an integrated luminosity of 5.0 inverse femtobarns. The W+b b-bar events are selected in the W to mu nu decay mode by requiring a muon with transverse momentum pt>25 GeV and pseudorapidity abs(eta)<2.1, and exactly two b-tagged jets with pt>25 GeV and abs(eta)<2.4. The measured W+b b-bar production cross section in the fiducial region, calculated at the level of final-state particles, is sigma(pp to W+b b-bar) B(W to mu nu)=0.53 +/- 0.05 (stat.) +/- 0.09 (syst.) +/- 0.06 (theo.) +/- 0.01 (lum.) pb, in agreement with the standard model prediction. In addition, kinematic distributions of the W+b b-bar system are in agreement with the predictions of a simulation using MADGRAPH and PYTHIA.