@Article{ATLASCollaborationAad_etal2014, 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 King, M. and Lacasta, C. and Lacuesta, V. R. and March, L. and Marti-Garcia, S. and Mi{\~A}{\textpm}ano, M. and Mitsou, V. A. and Moles-Valls, R. 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 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="Light-quark and gluon jet discrimination in collisions at root s=7 TeV with the ATLAS detector", journal="European Physical Journal C", year="2014", publisher="Springer", volume="74", number="8", pages="3023 - 29pp", abstract="A likelihood-based discriminant for the identification of quark- and gluon-initiated jets is built and validated using 4.7 fb of proton-proton collision data at collected with the ATLAS detector at the LHC. Data samples with enriched quark or gluon content are used in the construction and validation of templates of jet properties that are the input to the likelihood-based discriminant. The discriminating power of the jet tagger is established in both data and Monte Carlo samples within a systematic uncertainty of 10-20 {\%}. In data, light-quark jets can be tagged with an efficiency of while achieving a gluon-jet mis-tag rate of in a range between and for jets in the acceptance of the tracker. The rejection of gluon-jets found in the data is significantly below what is attainable using a Pythia 6 Monte Carlo simulation, where gluon-jet mis-tag rates of 10 {\%} can be reached for a 50 {\%} selection efficiency of light-quark jets using the same jet properties.", optnote="WOS:000340948500001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1903), last updated on Fri, 26 Sep 2014 19:45:28 +0000", issn="1434-6044", doi="10.1140/epjc/s10052-014-3023-z", opturl="http://arxiv.org/abs/arXiv:1405.6583", opturl="https://doi.org/10.1140/epjc/s10052-014-3023-z", archivePrefix="arXiv", eprint="arXiv:1405.6583", language="English" }