Online b-tagging selection for the ATLAS experiment at the LHC

The second level trigger system (LVL2) of the ATLAS experiment at the CERN LHC is required to reduce the trigger rate from 100kHz to about 1kHz. The trigger decision has to be taken on average in 10ms. The ability of identifying $b$-quark jets at trigger level opens many interesting physics opportun...

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Detalles Bibliográficos
Autores principales: Kootz, Andreas, Böhme, Jenny, Cervetto, Mario, Mättig, P, Parodi, Fabrizio, Schiavi, Carlo, Siebel, Anca
Lenguaje:eng
Publicado: 2005
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/820969
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author Kootz, Andreas
Böhme, Jenny
Cervetto, Mario
Mättig, P
Parodi, Fabrizio
Schiavi, Carlo
Siebel, Anca
author_facet Kootz, Andreas
Böhme, Jenny
Cervetto, Mario
Mättig, P
Parodi, Fabrizio
Schiavi, Carlo
Siebel, Anca
author_sort Kootz, Andreas
collection CERN
description The second level trigger system (LVL2) of the ATLAS experiment at the CERN LHC is required to reduce the trigger rate from 100kHz to about 1kHz. The trigger decision has to be taken on average in 10ms. The ability of identifying $b$-quark jets at trigger level opens many interesting physics opportunities, especially in the top quark and higgs sectors. Additionally the acceptance for several supersymmetric channels is increased. Here we present two methods of tagging b-quark jets at trigger level. One is based on impact parameters, the other one on secondary vertex reconstruction. The algorithms and their performances are described and compared.
id cern-820969
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-8209692019-09-30T06:29:59Zhttp://cds.cern.ch/record/820969engKootz, AndreasBöhme, JennyCervetto, MarioMättig, PParodi, FabrizioSchiavi, CarloSiebel, AncaOnline b-tagging selection for the ATLAS experiment at the LHCDetectors and Experimental TechniquesThe second level trigger system (LVL2) of the ATLAS experiment at the CERN LHC is required to reduce the trigger rate from 100kHz to about 1kHz. The trigger decision has to be taken on average in 10ms. The ability of identifying $b$-quark jets at trigger level opens many interesting physics opportunities, especially in the top quark and higgs sectors. Additionally the acceptance for several supersymmetric channels is increased. Here we present two methods of tagging b-quark jets at trigger level. One is based on impact parameters, the other one on secondary vertex reconstruction. The algorithms and their performances are described and compared.ATL-DAQ-CONF-2005-007ATL-COM-DAQ-2005-006CERN-ATL-DAQ-CONF-2005-007oai:cds.cern.ch:8209692005
spellingShingle Detectors and Experimental Techniques
Kootz, Andreas
Böhme, Jenny
Cervetto, Mario
Mättig, P
Parodi, Fabrizio
Schiavi, Carlo
Siebel, Anca
Online b-tagging selection for the ATLAS experiment at the LHC
title Online b-tagging selection for the ATLAS experiment at the LHC
title_full Online b-tagging selection for the ATLAS experiment at the LHC
title_fullStr Online b-tagging selection for the ATLAS experiment at the LHC
title_full_unstemmed Online b-tagging selection for the ATLAS experiment at the LHC
title_short Online b-tagging selection for the ATLAS experiment at the LHC
title_sort online b-tagging selection for the atlas experiment at the lhc
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/820969
work_keys_str_mv AT kootzandreas onlinebtaggingselectionfortheatlasexperimentatthelhc
AT bohmejenny onlinebtaggingselectionfortheatlasexperimentatthelhc
AT cervettomario onlinebtaggingselectionfortheatlasexperimentatthelhc
AT mattigp onlinebtaggingselectionfortheatlasexperimentatthelhc
AT parodifabrizio onlinebtaggingselectionfortheatlasexperimentatthelhc
AT schiavicarlo onlinebtaggingselectionfortheatlasexperimentatthelhc
AT siebelanca onlinebtaggingselectionfortheatlasexperimentatthelhc

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