Performance of b tagging at sqrt(s)=8 TeV in multijet, ttbar and boosted topology events

CMS Physics Analysis Summaries
Report number	CMS-PAS-BTV-13-001
Title	Performance of b tagging at sqrt(s)=8 TeV in multijet, ttbar and boosted topology events
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	The identification of jets originating from b quarks is an important component in analyses searching for new physics and for measurements of standard model processes. Particularly challenging are those involving top-quark or Higgs-boson production with decays in the boosted regime. %DBAM Studies of b-quark jet algorithms and their performances are presented, using multijet events and $\rm{t}\bar{\rm t}$ events recorded in proton-proton collision data at $\sqrt{s}=8$~TeV with the CMS detector in the year 2012. The b-tagging efficiency and misidentification probability are determined in data and in simulation over a wide range of jet transverse momenta from 20~GeV$/c$ to more than 800~GeV$/c$. For the first time in CMS, dedicated studies of b-quark identification in boosted topologies are presented. %DBAM
Other source	Inspire
Email contact: cms-pog-conveners-btag@cern.ch Fulltext in PDF Figure_001-a Figure_001-b Figure_001-c Figure_001-d Figure_002-a Figure_002-b Figure_003-a Figure_003-b Figure_003-c Figure_003-d Figure_004-a Figure_004-b Figure_004-c Figure_004-d Figure_005-a Figure_005-b Figure_005-c Figure_005-d Figure_006-a Figure_006-b Figure_006-c Figure_006-d Figure_006-e Figure_006-f Figure_007 Figure_008 Figure_009 Figure_010-a Figure_010-b Figure_011-a Figure_011-b Figure_012-a Figure_012-b Figure_013 Figure_014 Figure_015-a Figure_015-b Figure_015-c Figure_016 Figure_017 Figure_018 Figure_019-a Figure_019-b Figure_020-a Figure_020-b Figure_021-a Figure_021-b Figure_022-a Figure_022-b Figure_023-a Figure_023-b Figure_024-a Figure_024-b Figure_024-c Figure_024-d Figure_024-e Figure_024-f Figure_024-g Figure_024-h Figure_025-a Figure_025-b Figure_025-c Figure_025-d Figure_025-e Figure_025-f Figure_025-g Figure_025-h Figure_026-a Figure_026-b Figure_027 Figure_028 Figure_029-a Figure_029-b Figure_030-a Figure_030-b Additional information for the analysis (restricted access)