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Abstract:

The inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) i√n proton–proton collisions at a centre-of-mass energy of s = 7 TeV, using the ATLAS detector at the LHC. The measurements use data corresponding to an integrated luminosity of 34 pb −1 . The b-jets are identified using either a lifetime-based method, where secondary decay vertices of b-hadrons in jets are reconstructed using information from the tracking detectors, or a muon-based method where the presence of a muon is used to identify semileptonic decays of b-hadrons inside jets. The inclusive b-jet cross-section is measured as a function of transverse momentum in the range 20<pT < 400 GeV and rapidity in the range |y| < 2.1. The bb-dijet cross-section is measured as a function of the dijet invariant mass in the range 110 < mjj < 760 GeV, the azimuthal angle difference between the two jets and the angular variable χ in two dijet mass regions. The results are compared with next-to-leading-order QCD predictions. Good agreement is observed between the measured crosssections and the predictions obtained using POWHEG + Pythia. MC@NLO + Herwig shows good agreement with the measured bb-dijet cross-section. However, it does not reproduce the measured inclusive cross-section well, particularly for central b-jets with large transverse momenta. © CERN for the benefit of the ATLAS collaboration 2011.

Registro:

Documento: Artículo
Título:Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s = 7 TeV with the ATLAS detector
Autor:Alam, M.S. et al.
Este artículo contiene 194 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 194 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2011
Volumen:71
Número:12
Página de inicio:1
Página de fin:22
DOI: http://dx.doi.org/10.1140/epjc/s10052-011-1846-4
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v71_n12_p1_Alam

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Citas:

---------- APA ----------
(2011) . Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s = 7 TeV with the ATLAS detector. European Physical Journal C, 71(12), 1-22.
http://dx.doi.org/10.1140/epjc/s10052-011-1846-4
---------- CHICAGO ----------
Alam, M.S. "Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s = 7 TeV with the ATLAS detector" . European Physical Journal C 71, no. 12 (2011) : 1-22.
http://dx.doi.org/10.1140/epjc/s10052-011-1846-4
---------- MLA ----------
Alam, M.S. "Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s = 7 TeV with the ATLAS detector" . European Physical Journal C, vol. 71, no. 12, 2011, pp. 1-22.
http://dx.doi.org/10.1140/epjc/s10052-011-1846-4
---------- VANCOUVER ----------
Alam, M.S. Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s = 7 TeV with the ATLAS detector. Eur. Phys. J. C. 2011;71(12):1-22.
http://dx.doi.org/10.1140/epjc/s10052-011-1846-4