The Hadron Alley of the LHCb High Level Trigger

This note describes the "hadron alley", the list of algorithms that selects B meson decays into hadrons in the first level of the LHCb software trigger (HLT1). The alley aims to obtain a rate reduction of at least a factor 30 with respect to the input rate of the hardware trigger (L0), whi...

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Detalles Bibliográficos
Autores principales: Hernando Morata, J A, Martinez Santos, D, Cid Vidal, X, Guerrer, G, Gomes Dos Santos Neto, A, Albrecht, J
Lenguaje:eng
Publicado: 2010
Materias:
Physics in General
Acceso en línea:http://cds.cern.ch/record/1165338
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author Hernando Morata, J A
Martinez Santos, D
Cid Vidal, X
Guerrer, G
Gomes Dos Santos Neto, A
Albrecht, J
author_facet Hernando Morata, J A
Martinez Santos, D
Cid Vidal, X
Guerrer, G
Gomes Dos Santos Neto, A
Albrecht, J
author_sort Hernando Morata, J A
collection CERN
description This note describes the "hadron alley", the list of algorithms that selects B meson decays into hadrons in the first level of the LHCb software trigger (HLT1). The alley aims to obtain a rate reduction of at least a factor 30 with respect to the input rate of the hardware trigger (L0), while keeping the efficiency on offline selected B decays into hadrons as high as possible. The hadron alley implements the "L0 confirmation" strategy, that requires that HLT1 trigger decisions are based on particles that triggered the L0. The performance of the alley is presented and some alternative configurations of the L0 hadron trigger and the hadron alley are discussed.
id cern-1165338
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-11653382019-09-30T06:29:59Zhttp://cds.cern.ch/record/1165338engHernando Morata, J AMartinez Santos, DCid Vidal, XGuerrer, GGomes Dos Santos Neto, AAlbrecht, JThe Hadron Alley of the LHCb High Level TriggerPhysics in GeneralThis note describes the "hadron alley", the list of algorithms that selects B meson decays into hadrons in the first level of the LHCb software trigger (HLT1). The alley aims to obtain a rate reduction of at least a factor 30 with respect to the input rate of the hardware trigger (L0), while keeping the efficiency on offline selected B decays into hadrons as high as possible. The hadron alley implements the "L0 confirmation" strategy, that requires that HLT1 trigger decisions are based on particles that triggered the L0. The performance of the alley is presented and some alternative configurations of the L0 hadron trigger and the hadron alley are discussed.LHCb-2009-034CERN-LHCb-2009-034oai:cds.cern.ch:11653382010-04-22
spellingShingle Physics in General
Hernando Morata, J A
Martinez Santos, D
Cid Vidal, X
Guerrer, G
Gomes Dos Santos Neto, A
Albrecht, J
The Hadron Alley of the LHCb High Level Trigger
title The Hadron Alley of the LHCb High Level Trigger
title_full The Hadron Alley of the LHCb High Level Trigger
title_fullStr The Hadron Alley of the LHCb High Level Trigger
title_full_unstemmed The Hadron Alley of the LHCb High Level Trigger
title_short The Hadron Alley of the LHCb High Level Trigger
title_sort hadron alley of the lhcb high level trigger
topic Physics in General
url http://cds.cern.ch/record/1165338
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