At the Large Hadron Collider, the identification of jets originating from b
quarks is important for searches for new physics and for measurements of
standard model processes. A variety of algorithms has been developed by CMS to
select b-quark jets based on variables such as the impact parameters of
charged-particle tracks, the properties of reconstructed decay vertices, and
the presence or absence of a lepton, or combinations thereof. The performance
of these algorithms has been measured using data from proton-proton collisions
at the LHC and compared with expectations based on simulation. The data used in
this study were recorded in 2011 at sqrt(s) = 7 TeV for a total integrated
luminosity of 5.0 inverse femtobarns. The efficiency for tagging b-quark jets
has been measured in events from multijet and t-quark pair production. CMS has
achieved a b-jet tagging efficiency of 85% for a light-parton misidentification
probability of 10%. For analyses requiring higher purity, a misidentification
probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency.
Description
Identification of b-quark jets with the CMS experiment
%0 Generic
%1 BTV-12-001
%A Collaboration, CMS
%D 2012
%K b-quark cms identification
%T Identification of b-quark jets with the CMS experiment
%U http://arxiv.org/abs/1211.4462
%X At the Large Hadron Collider, the identification of jets originating from b
quarks is important for searches for new physics and for measurements of
standard model processes. A variety of algorithms has been developed by CMS to
select b-quark jets based on variables such as the impact parameters of
charged-particle tracks, the properties of reconstructed decay vertices, and
the presence or absence of a lepton, or combinations thereof. The performance
of these algorithms has been measured using data from proton-proton collisions
at the LHC and compared with expectations based on simulation. The data used in
this study were recorded in 2011 at sqrt(s) = 7 TeV for a total integrated
luminosity of 5.0 inverse femtobarns. The efficiency for tagging b-quark jets
has been measured in events from multijet and t-quark pair production. CMS has
achieved a b-jet tagging efficiency of 85% for a light-parton misidentification
probability of 10%. For analyses requiring higher purity, a misidentification
probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency.
@misc{BTV-12-001,
abstract = {At the Large Hadron Collider, the identification of jets originating from b
quarks is important for searches for new physics and for measurements of
standard model processes. A variety of algorithms has been developed by CMS to
select b-quark jets based on variables such as the impact parameters of
charged-particle tracks, the properties of reconstructed decay vertices, and
the presence or absence of a lepton, or combinations thereof. The performance
of these algorithms has been measured using data from proton-proton collisions
at the LHC and compared with expectations based on simulation. The data used in
this study were recorded in 2011 at sqrt(s) = 7 TeV for a total integrated
luminosity of 5.0 inverse femtobarns. The efficiency for tagging b-quark jets
has been measured in events from multijet and t-quark pair production. CMS has
achieved a b-jet tagging efficiency of 85% for a light-parton misidentification
probability of 10%. For analyses requiring higher purity, a misidentification
probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency.},
added-at = {2013-04-23T18:08:48.000+0200},
author = {Collaboration, CMS},
biburl = {https://www.bibsonomy.org/bibtex/231a3f67268a7aea425d7341e41910163/kreczko},
description = {Identification of b-quark jets with the CMS experiment},
interhash = {3c8dedb267a7431021d246261dc30bdf},
intrahash = {31a3f67268a7aea425d7341e41910163},
keywords = {b-quark cms identification},
note = {arxiv:1211.4462},
timestamp = {2014-07-27T00:02:59.000+0200},
title = {Identification of b-quark jets with the CMS experiment},
url = {http://arxiv.org/abs/1211.4462},
year = 2012
}