Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

G. Aad; Mogens Dam; Jørgen Beck Hansen; Peter Henrik Hansen; Jørn Dines Hansen; John Renner Hansen; Simon Johann Franz Heisterkamp; Morten Dam Jørgensen; Esben Bryndt Klinkby; Sascha Mehlhase; Björn Stefan Nilsson; Nele Maria Philomena Boelaert; Troels Christian Petersen; Stefania Xella

doi:10.1016/j.physletb.2011.12.046

Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

G. Aad, Mogens Dam, Jørgen Beck Hansen, Peter Henrik Hansen, Jørn Dines Hansen, John Renner Hansen, Simon Johann Franz Heisterkamp, Morten Dam Jørgensen, Esben Bryndt Klinkby, Sascha Mehlhase, Björn Stefan Nilsson, Nele Maria Philomena Boelaert, Troels Christian Petersen, Stefania Xella

38 Citationer (Scopus)

Abstract

A measurement is presented of the cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at √s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb^-1 of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the antikt clustering algorithm with transverse momentum above 25 GeV and rapidity within ±2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 ± 1.9(stat) ± 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value.

Originalsprog	Engelsk
Tidsskrift	Physics Letters B
Vol/bind	707
Udgave nummer	5
Sider (fra-til)	418-437
Antal sider	19
ISSN	0370-2693
DOI	https://doi.org/10.1016/j.physletb.2011.12.046
Status	Udgivet - 1 feb. 2012

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10.1016/j.physletb.2011.12.046

Citationsformater

Aad, G., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. D., Hansen, J. R., Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Boelaert, N. M. P., Petersen, T. C., & Xella, S. (2012). Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector. Physics Letters B, 707(5), 418-437. https://doi.org/10.1016/j.physletb.2011.12.046

Aad, G, Dam, M , Hansen, JB , Hansen, PH , Hansen, JD , Hansen, JR, Heisterkamp, SJF, Jørgensen, MD, Klinkby, EB, Mehlhase, S, Nilsson, BS, Boelaert, NMP, Petersen, TC & Xella, S 2012, 'Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector', Physics Letters B, bind 707, nr. 5, s. 418-437. https://doi.org/10.1016/j.physletb.2011.12.046

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title = "Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector",

abstract = "A measurement is presented of the cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at √s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb-1 of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the antikt clustering algorithm with transverse momentum above 25 GeV and rapidity within ±2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 ± 1.9(stat) ± 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value.",

author = "G. Aad and Mogens Dam and Hansen, {J{\o}rgen Beck} and Hansen, {Peter Henrik} and Hansen, {J{\o}rn Dines} and Hansen, {John Renner} and Heisterkamp, {Simon Johann Franz} and J{\o}rgensen, {Morten Dam} and Klinkby, {Esben Bryndt} and Sascha Mehlhase and Nilsson, {Bj{\"o}rn Stefan} and Boelaert, {Nele Maria Philomena} and Petersen, {Troels Christian} and Stefania Xella",

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T1 - Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

AU - Aad, G.

AU - Dam, Mogens

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Hansen, John Renner

AU - Heisterkamp, Simon Johann Franz

AU - Jørgensen, Morten Dam

AU - Klinkby, Esben Bryndt

AU - Mehlhase, Sascha

AU - Nilsson, Björn Stefan

AU - Boelaert, Nele Maria Philomena

AU - Petersen, Troels Christian

AU - Xella, Stefania

PY - 2012/2/1

Y1 - 2012/2/1

N2 - A measurement is presented of the cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at √s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb-1 of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the antikt clustering algorithm with transverse momentum above 25 GeV and rapidity within ±2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 ± 1.9(stat) ± 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value.

AB - A measurement is presented of the cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at √s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb-1 of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the antikt clustering algorithm with transverse momentum above 25 GeV and rapidity within ±2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 ± 1.9(stat) ± 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value.

U2 - 10.1016/j.physletb.2011.12.046

DO - 10.1016/j.physletb.2011.12.046

M3 - Journal article

SN - 0370-2693

VL - 707

SP - 418

EP - 437

JO - Physics Letters B

JF - Physics Letters B

IS - 5

ER -

Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Abstract

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