1741020 20160524102531.0 oai:cds.cern.ch:1741020 cerncds:FULLTEXT cerncds:atlas-conf Inspire 1304981 ATLAS-CONF-2014-046 eng ATLAS-COM-CONF-2013-087 The ATLAS collaboration Calibration of the performance of $b$-tagging for $c$ and light-flavour jets in the 2012 ATLAS data 2014 CERN Geneva 06 07 2014 mult. p A variety of algorithms have been developed, within the ATLAS experiment at the Large Hadron Collider, to distinguish $b$-quark jets from jets containing only lighter quarks. This note describes measurements of the efficiency of the most performant of these $b$-tagging algorithms, as carried out on the data collected at $\sqrt{s}=8$ TeV in 2012, for charm and light-flavour jets. The results, which correct the efficiency in simulation to that measured in data, are presented in the form of jet transverse momentum dependent (and in the case of the light-flavour jets, pseudorapidity dependent) scale factors. Compared to previous calibration analyses, improvements have been made driven by the larger dataset collected in 2012, as well as by a refinement of the existing analyses. These results complement those obtained for $b$ jets as presented in a previous note. CONF CERN CDS-Invenio WebSubmit Particle Physics - Experiment SzGeCERN Conference talks on ATLAS SzGeCERN CERN BTAGGING CERN INTNOTE PUBLATLAS INTNOTEATLASPUBL CERN LHC ATLAS PH-EP http://cds.cern.ch/record/1559721 Original Communication (restricted to ATLAS) 483057 http://cds.cern.ch/record/1741020/files/ATLAS-CONF-2014-046.pdf Stamped by WebSubmit: 06/07/2014 6882 http://cds.cern.ch/record/1741020/files/ATLAS-CONF-2014-046.gif?subformat=icon icon Stamped by WebSubmit: 06/07/2014 71223 http://cds.cern.ch/record/1741020/files/ATLAS-CONF-2014-046.jpg?subformat=icon-700 icon-700 Stamped by WebSubmit: 06/07/2014 8121 http://cds.cern.ch/record/1741020/files/ATLAS-CONF-2014-046.jpg?subformat=icon-180 icon-180 Stamped by WebSubmit: 06/07/2014 fabrizio.parodi@ge.infn.it nedden@mail.cern.ch f.filthaut@science.ru.nl n 201470 91 PUBLIC 000739558CER INTNOTEATLASPUBL NOTE