TY  - JOUR
AU  - ATLAS Collaboration (Aad, G. et al
AU  - Amoros, G.
AU  - Cabrera Urban, S.
AU  - Castillo Gimenez, V.
AU  - Costa, M. J.
AU  - Escobar, C.
AU  - Ferrer, A.
AU  - Fiorini, L.
AU  - Fuster, J.
AU  - Garcia, C.
AU  - Gonzalez de la Hoz, S.
AU  - Hernandez Jimenez, Y.
AU  - Higon-Rodriguez, E.
AU  - Irles Quiles, A.
AU  - Kaci, M.
AU  - Lacasta, C.
AU  - Lacuesta, V. R.
AU  - Marti-Garcia, S.
AU  - Miñano, M.
AU  - Mitsou, V. A.
AU  - Moles-Valls, R.
AU  - Moreno Llacer, M.
AU  - Oliver Garcia, E.
AU  - Perez Garcia-Estañ, M. T.
AU  - Ros, E.
AU  - Salt, J.
AU  - Solans, C. A.
AU  - Soldevila, U.
AU  - Sanchez, J.
AU  - Torro Pastor, E.
AU  - Valladolid Gallego, E.
AU  - Valls Ferrer, J. A.
AU  - Villaplana Perez, M.
AU  - Vos, M.
AU  - Wildauer, A.
PY  - 2011
DA  - 2011//
TI  - Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at sqrt(s)=7 TeV with the ATLAS detector
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 1846
EP  - 22pp
VL  - 71
IS  - 12
PB  - Springer
AB  - The inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton-proton collisions at a centre-of-mass energy of sqrt(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 < p(T) < 400 GeV and rapidity in the range vertical bar y vertical bar < 2.1. The b<(b)over bar>-dijet cross-section is measured as a function of the dijet invariant mass in the range 110 < m(jj) < 760 GeV, the azimuthal angle difference between the two jets and the angular variable chi in two dijet mass regions. The results are compared with next-to-leading-order QCD predictions. Good agreement is observed between the measured cross-sections and the predictions obtained using POWHEG + Pythia. MC@NLO + Herwig shows good agreement with the measured b (b) over bar -dijet cross-section. However, it does not reproduce the measured inclusive cross-section well, particularly for central b-jets with large transverse momenta.
SN  - 1434-6044
UR  - http://arxiv.org/abs/1109.6833
UR  - https://doi.org/10.1140/epjc/s10052-011-1846-4
DO  - 10.1140/epjc/s10052-011-1846-4
LA  - English
N1  - WOS:000298347800030
ID  - ATLASCollaborationAad_etal2011
ER  -