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 root 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 anti-k(t) 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. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at root s=7 TeV with the ATLAS detector / G., A., T., A., B., A., J., A., S. A., K., A. A., A., O., A., R., A., B., A., M., A., O. S., A., H., A., H., A., M. I., O., B. S., A., L., A., D. L., A., T. N., A., J., A., S., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 707:6(2013), pp. 418-437. [10.1007/jhep06(2013)084]

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

BAGNAIA, Paolo;BINI, Cesare;GAUZZI, Paolo;GENTILE, Simonetta;GIAGU, Stefano;LACAVA, Francesco;LUCI, Claudio;MESSINA, Andrea;MONZANI, SIMONE;SOLFAROLI CAMILLOCCI, ELENA;VERDUCCI, MONICA;
2013

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 root 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 anti-k(t) 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. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.
2013
hadron-hadron scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at root s=7 TeV with the ATLAS detector / G., A., T., A., B., A., J., A., S. A., K., A. A., A., O., A., R., A., B., A., M., A., O. S., A., H., A., H., A., M. I., O., B. S., A., L., A., D. L., A., T. N., A., J., A., S., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 707:6(2013), pp. 418-437. [10.1007/jhep06(2013)084]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/555845
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