@Article{ATLASCollaborationAad_etal2013, author="ATLAS Collaboration (Aad, G. et al and Cabrera Urban, S. and Castillo Gimenez, V. and Costa, M. J. and Fassi, F. and Ferrer, A. and Fiorini, L. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Hernandez Jimenez, Y. and Higon-Rodriguez, E. and Irles Quiles, A. and Kaci, M. and Lacasta, C. and Lacuesta, V. R. and Marti-Garcia, S. and Mi{\~A}{\textpm}ano, M. and Mitsou, V. A. and Moles-Valls, R. and Moreno Llacer, M. and Oliver Garcia, E. and Pedraza Lopez, S. and Perez Garcia-Esta{\~A}{\textpm}, M. T. and Romero Adam, E. and Ros, E. and Salt, J. and Sanchez Martinez, V. and Solans, C. A. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valero, A. and Valladolid Gallego, E. and Valls Ferrer, J. A. and Villaplana Perez, M. and Vos, M.", title="Measurement of the flavour composition of dijet events in pp collisions at root s=7 TeV with the ATLAS detector", journal="European Physical Journal C", year="2013", publisher="Springer", volume="73", number="2", pages="2301--30pp", abstract="This paper describes a measurement of the flavour composition of dijet events produced in pp collisions at root s = 7 TeV using the ATLAS detector. The measurement uses the full 2010 data sample, corresponding to an integrated luminosity of 39 pb(-1). Six possible combinations of light, charm and bottom jets are identified in the dijet events, where the jet flavour is defined by the presence of bottom, charm or solely light flavour hadrons in the jet. Kinematic variables, based on the properties of displaced decay vertices and optimised for jet flavour identification, are used in a multidimensional template fit to measure the fractions of these dijet flavour states as functions of the leading jet transverse momentum in the range 40 GeV to 500 GeV and jet rapidity vertical bar y vertical bar < 2.1. The fit results agree with the predictions of leading-and next-to-leading-order calculations, with the exception of the dijet fraction composed of bottom and light flavour jets, which is underestimated by all models at large transverse jet momenta. The ability to identify jets containing two b-hadrons, originating from e. g. gluon splitting, is demonstrated. The difference between bottom jet production rates in leading and subleading jets is consistent with the next-to-leading-order predictions.", optnote="WOS:000318289600010", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1439), last updated on Fri, 07 Jun 2013 16:31:02 +0000", issn="1434-6044", doi="10.1140/epjc/s10052-013-2301-5", opturl="http://arxiv.org/abs/arXiv:1210.0441", opturl="https://doi.org/10.1140/epjc/s10052-013-2301-5", archivePrefix="arXiv", eprint="arXiv:1210.0441", language="English" }