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LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing

The Large Hadron Collider started operation this year, 2008. LHCb is a precision heavy-flavour experiment at this collider. The precision of LHCb is greatly aided by the LHCb Ring Imaging Cherenkov system for the separation and identification of charged hadrons. This system uses pixel Hybrid Photon...

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Detalles Bibliográficos
Autor principal: Lambert, Robert W
Lenguaje:eng
Publicado: Edinburgh Univ. 2009
Materias:
Acceso en línea:http://cds.cern.ch/record/1154988
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author Lambert, Robert W
author_facet Lambert, Robert W
author_sort Lambert, Robert W
collection CERN
description The Large Hadron Collider started operation this year, 2008. LHCb is a precision heavy-flavour experiment at this collider. The precision of LHCb is greatly aided by the LHCb Ring Imaging Cherenkov system for the separation and identification of charged hadrons. This system uses pixel Hybrid Photon Detectors, an innovative new technology for single photon imaging. The simulation and testing of these photon detectors are reported and discussed. The photodetectors were measured to have reached or exceeded the specifications in key areas. In particular, the detector quantum efficiencies far exceed expectations, by a relative 27 %. The precision of LHCb will be used to examine CP-violation and rare decays of B-mesons. A key part of the physics programme will be a measurement of the CP-violating flavour specific asymmetry in neutral B-meson mixing. This asymmetry is expected to bevery small in the Standard Model, of order 10-4, however it is very sensitive to new physics, which can increase the asymmetry dramatically. We present an improved event selection and a novel method to control systematics. This will enable us to make a world-leading measurement of this parameter in one nominal year of data taking (2 fb-1).
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institution Organización Europea para la Investigación Nuclear
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publishDate 2009
publisher Edinburgh Univ.
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spelling cern-11549882019-09-30T06:29:59Zhttp://cds.cern.ch/record/1154988engLambert, Robert WLHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson MixingParticle Physics - ExperimentThe Large Hadron Collider started operation this year, 2008. LHCb is a precision heavy-flavour experiment at this collider. The precision of LHCb is greatly aided by the LHCb Ring Imaging Cherenkov system for the separation and identification of charged hadrons. This system uses pixel Hybrid Photon Detectors, an innovative new technology for single photon imaging. The simulation and testing of these photon detectors are reported and discussed. The photodetectors were measured to have reached or exceeded the specifications in key areas. In particular, the detector quantum efficiencies far exceed expectations, by a relative 27 %. The precision of LHCb will be used to examine CP-violation and rare decays of B-mesons. A key part of the physics programme will be a measurement of the CP-violating flavour specific asymmetry in neutral B-meson mixing. This asymmetry is expected to bevery small in the Standard Model, of order 10-4, however it is very sensitive to new physics, which can increase the asymmetry dramatically. We present an improved event selection and a novel method to control systematics. This will enable us to make a world-leading measurement of this parameter in one nominal year of data taking (2 fb-1).Edinburgh Univ.CERN-THESIS-2009-001oai:cds.cern.ch:11549882009
spellingShingle Particle Physics - Experiment
Lambert, Robert W
LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing
title LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing
title_full LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing
title_fullStr LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing
title_full_unstemmed LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing
title_short LHCb Hybrid Photon Detectors and Sensitivity to Flavour Specific Asymmetry in Neutral B-Meson Mixing
title_sort lhcb hybrid photon detectors and sensitivity to flavour specific asymmetry in neutral b-meson mixing
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1154988
work_keys_str_mv AT lambertrobertw lhcbhybridphotondetectorsandsensitivitytoflavourspecificasymmetryinneutralbmesonmixing