Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5377
Title: Identification of b-quark jets with the CMS experiment
Authors: CMS Collaboration
Karapınar, Güler
Karapınar, Güler
Keywords: Elementary particles
Pattern recognition
Calibration and fitting methods
Tellurium compounds
Integrated luminosity
Issue Date: Apr-2013
Publisher: IOP Publishing Ltd.
Source: Chatrchyan, S, Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Aguilo, E., Bergauer, T., ...CMS Collaboration (2013). Identification of b-quark jets with the CMS experiment. Journal of Instrumentation, 8(4). doi:10.1088/1748-0221/8/04/P04013
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 s = 7 TeV for a total integrated luminosity of 5.0 fb-1. 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% in multijet events. For analyses requiring higher purity, a misidentification probability of only 1.5% has been achieved, for a 70% b-jet tagging efficiency. © 2013 IOP Publishing Ltd and Sissa Medialab srl.
URI: http://doi.org/10.1088/1748-0221/8/04/P04013
http://hdl.handle.net/11147/5377
ISSN: 1748-0221
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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