Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS

Direct measurements of the angles of the Cabibbo-Kobayashi-Maskawa (CKM) unitarity triangle will be possible at the B-factories now being commissioned. The physics potential of the ATLAS experiment which will be a general purpose experiment at LHC to determine CP violation parameters from measuremen...

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Detalles Bibliográficos
Autor principal: Damet, J
Lenguaje:eng
Publicado: 2000
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(99)00798-8
http://cds.cern.ch/record/444997
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author Damet, J
author_facet Damet, J
author_sort Damet, J
collection CERN
description Direct measurements of the angles of the Cabibbo-Kobayashi-Maskawa (CKM) unitarity triangle will be possible at the B-factories now being commissioned. The physics potential of the ATLAS experiment which will be a general purpose experiment at LHC to determine CP violation parameters from measurement of neutral B-meson decays is discussed. An estimation of the error in sin2 beta is presented for three years of running (corresponding to 30fb/sup -1/) based on reconstruction of the decay channel B/sub d//sup 0/ to J/ psi K/sub S //sup 0/ using two tagging methods. To determine the asymmetry that is due to CP violation, the asymmetry due to different production probabilities of B/sub d//sup 0/ and B/sub d//sup 0/ in pp collisions has to be subtracted from the measured asymmetry. The accuracy with which this production asymmetry can be measured has been estimated using the two control channels B/sub d//sup 0/ to J/ psi K/sup 0/* and B/sub d//sup 0/ to J/ psi K/sup +/. (7 refs).
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spelling cern-4449972019-09-30T06:29:59Zdoi:10.1016/S0375-9474(99)00798-8http://cds.cern.ch/record/444997engDamet, JMeasurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLASDetectors and Experimental TechniquesDirect measurements of the angles of the Cabibbo-Kobayashi-Maskawa (CKM) unitarity triangle will be possible at the B-factories now being commissioned. The physics potential of the ATLAS experiment which will be a general purpose experiment at LHC to determine CP violation parameters from measurement of neutral B-meson decays is discussed. An estimation of the error in sin2 beta is presented for three years of running (corresponding to 30fb/sup -1/) based on reconstruction of the decay channel B/sub d//sup 0/ to J/ psi K/sub S //sup 0/ using two tagging methods. To determine the asymmetry that is due to CP violation, the asymmetry due to different production probabilities of B/sub d//sup 0/ and B/sub d//sup 0/ in pp collisions has to be subtracted from the measured asymmetry. The accuracy with which this production asymmetry can be measured has been estimated using the two control channels B/sub d//sup 0/ to J/ psi K/sup 0/* and B/sub d//sup 0/ to J/ psi K/sup +/. (7 refs).oai:cds.cern.ch:4449972000
spellingShingle Detectors and Experimental Techniques
Damet, J
Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS
title Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS
title_full Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS
title_fullStr Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS
title_full_unstemmed Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS
title_short Measurement of CP violation effects in $B_{d}^{0} \to J/\psi K_{s}^{0}$ in ATLAS
title_sort measurement of cp violation effects in $b_{d}^{0} \to j/\psi k_{s}^{0}$ in atlas
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/S0375-9474(99)00798-8
http://cds.cern.ch/record/444997
work_keys_str_mv AT dametj measurementofcpviolationeffectsinbd0tojpsiks0inatlas

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