Short distance D-Dbar mixing

We review the status of Standard Model predictions for lifetimes and mixing rates of charmed mesons. It is shown that the short distance approach is able to reproduce tau(D^+)/tau(D^0) at leading order in the 1/m_c expansion. SU(3) violating effects from interactions with the soft hadronic backgroun...

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Detalles Bibliográficos
Autores principales: Bobrowski, Markus, Lenz, Alexander, Rauh, Thomas
Lenguaje:eng
Publicado: 2012
Materias:
Particle Physics - Phenomenology
Acceso en línea:http://cds.cern.ch/record/1475591
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author Bobrowski, Markus
Lenz, Alexander
Rauh, Thomas
author_facet Bobrowski, Markus
Lenz, Alexander
Rauh, Thomas
author_sort Bobrowski, Markus
collection CERN
description We review the status of Standard Model predictions for lifetimes and mixing rates of charmed mesons. It is shown that the short distance approach is able to reproduce tau(D^+)/tau(D^0) at leading order in the 1/m_c expansion. SU(3) violating effects from interactions with the soft hadronic background are identified as the dominant contribution to the D-Dbar mixing rate. We discuss the contribution from operators of dimension nine, which is able to enhance the neutral charm width splitting by a factor of order ten and comment on possible CP violation in mixing.
id cern-1475591
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14755912021-05-03T08:17:13Zhttp://cds.cern.ch/record/1475591engBobrowski, MarkusLenz, AlexanderRauh, ThomasShort distance D-Dbar mixingParticle Physics - PhenomenologyWe review the status of Standard Model predictions for lifetimes and mixing rates of charmed mesons. It is shown that the short distance approach is able to reproduce tau(D^+)/tau(D^0) at leading order in the 1/m_c expansion. SU(3) violating effects from interactions with the soft hadronic background are identified as the dominant contribution to the D-Dbar mixing rate. We discuss the contribution from operators of dimension nine, which is able to enhance the neutral charm width splitting by a factor of order ten and comment on possible CP violation in mixing.TTP-12-031arXiv:1208.6438TTP 12-031oai:cds.cern.ch:14755912012-09-03
spellingShingle Particle Physics - Phenomenology
Bobrowski, Markus
Lenz, Alexander
Rauh, Thomas
Short distance D-Dbar mixing
title Short distance D-Dbar mixing
title_full Short distance D-Dbar mixing
title_fullStr Short distance D-Dbar mixing
title_full_unstemmed Short distance D-Dbar mixing
title_short Short distance D-Dbar mixing
title_sort short distance d-dbar mixing
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/1475591
work_keys_str_mv AT bobrowskimarkus shortdistanceddbarmixing
AT lenzalexander shortdistanceddbarmixing
AT rauhthomas shortdistanceddbarmixing

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