001664335 001__ 1664335
001664335 005__ 20150211084113.0
001664335 0248_ $$aoai:cds.cern.ch:1664335$$pcerncds:atlas-conf$$pcerncds:FULLTEXT
001664335 035__ $$9Inspire$$a1282511
001664335 037__ $$aATLAS-CONF-2014-004
001664335 041__ $$aeng
001664335 088__ $$9ATLAS-COM-CONF-2014-003
001664335 110__ $$aThe ATLAS collaboration
001664335 245__ $$aCalibration of $b$-tagging using dileptonic top pair events in a combinatorial likelihood approach with the ATLAS experiment
001664335 260__ $$c2014
001664335 269__ $$aGeneva$$bCERN$$c25 Feb 2014
001664335 300__ $$a20 p
001664335 520__ $$aThis note presents a new method to derive the $b$-jet tagging efficiency from data using a combinatorial likelihood approach applied to dileptonic $t\bar{t}$ events. Calibration results are obtained for the $pp$ collision data collected by the ATLAS experiment at the Large Hadron Collider at $\sqrt{s} = 8$ TeV, corresponding to an integrated luminosity of 20.3 fb$^{-1}$. The $b$-jet tagging efficiency measurements are provided in the form of jet transverse momentum dependent scale factors which correct the $b$-tagging performance in simulation to that observed in data. The scale factors have been measured in the range 20-300 GeV and have a total uncertainty $\sim 2\%$ for jets with transverse momenta around 100 GeV. This represents a significant improvement in precision compared to alternative calibration methods.
001664335 594__ $$aCONF
001664335 595__ $$aCERN CDS-Invenio WebSubmit
001664335 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
001664335 65027 $$2SzGeCERN$$aConference talks on ATLAS
001664335 6531_ $$9CERN$$aFlavour tagging calibration
001664335 6531_ $$9CERN$$aTOP
001664335 6531_ $$9CERN$$aBTAGGING
001664335 690C_ $$aCERN
001664335 690C_ $$aINTNOTE
001664335 690C_ $$aINTNOTEATLASPUBL
001664335 693__ $$aCERN LHC$$eATLAS
001664335 710__ $$5PH-EP
001664335 8564_ $$uhttps://cds.cern.ch/record/1644784$$yOriginal Communication (restricted to ATLAS)
001664335 8564_ $$uhttps://cds.cern.ch/record/1664335/files/ATLAS-CONF-2014-004.pdf$$zStamped by WebSubmit: 25/02/2014
001664335 859__ $$fmartin.erik.gerd.zur.nedden@cern.ch
001664335 859__ $$fF.Filthaut@science.ru.nl
001664335 859__ $$ftim.scanlon@cern.ch
001664335 916__ $$sn$$w201470
001664335 960__ $$a91
001664335 963__ $$aPUBLIC
001664335 970__ $$a000737065CER
001664335 980__ $$aINTNOTEATLASPUBL
001664335 980__ $$aNOTE