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Direct CP violation in charm and flavor mixing beyond the SM

We analyze possible interpretations of the recent LHCb evidence for CP violation in D meson decays in terms of physics beyond the Standard Model. On general grounds, models in which the primary source of flavor violation is linked to the breaking of chiral symmetry (left-right flavor mixing) are nat...

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Detalles Bibliográficos
Autores principales: Giudice, Gian Francesco, Isidori, Gino, Paradisi, Paride
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP04(2012)060
http://cds.cern.ch/record/1420400
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author Giudice, Gian Francesco
Isidori, Gino
Paradisi, Paride
author_facet Giudice, Gian Francesco
Isidori, Gino
Paradisi, Paride
author_sort Giudice, Gian Francesco
collection CERN
description We analyze possible interpretations of the recent LHCb evidence for CP violation in D meson decays in terms of physics beyond the Standard Model. On general grounds, models in which the primary source of flavor violation is linked to the breaking of chiral symmetry (left-right flavor mixing) are natural candidates to explain this effect, via enhanced chromomagnetic operators. In the case of supersymmetric models, we identify two motivated scenarios: disoriented A-terms and split families. These structures predict other non-standard signals, such as nuclear EDMs close to their present bounds and, possibly, tiny but visible deviations in K and B physics, or even sizable flavor-violating processes involving the top quark or the stops. Some of these connections, especially the one with nuclear EDMs, hold beyond supersymmetry, as illustrated with the help of prototype non-supersymmetric models.
id cern-1420400
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
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spelling cern-14204002019-09-30T06:29:59Zdoi:10.1007/JHEP04(2012)060http://cds.cern.ch/record/1420400engGiudice, Gian FrancescoIsidori, GinoParadisi, ParideDirect CP violation in charm and flavor mixing beyond the SMParticle Physics - PhenomenologyWe analyze possible interpretations of the recent LHCb evidence for CP violation in D meson decays in terms of physics beyond the Standard Model. On general grounds, models in which the primary source of flavor violation is linked to the breaking of chiral symmetry (left-right flavor mixing) are natural candidates to explain this effect, via enhanced chromomagnetic operators. In the case of supersymmetric models, we identify two motivated scenarios: disoriented A-terms and split families. These structures predict other non-standard signals, such as nuclear EDMs close to their present bounds and, possibly, tiny but visible deviations in K and B physics, or even sizable flavor-violating processes involving the top quark or the stops. Some of these connections, especially the one with nuclear EDMs, hold beyond supersymmetry, as illustrated with the help of prototype non-supersymmetric models.arXiv:1201.6204CERN-PH-TH-2012-017oai:cds.cern.ch:14204002012-01-31
spellingShingle Particle Physics - Phenomenology
Giudice, Gian Francesco
Isidori, Gino
Paradisi, Paride
Direct CP violation in charm and flavor mixing beyond the SM
title Direct CP violation in charm and flavor mixing beyond the SM
title_full Direct CP violation in charm and flavor mixing beyond the SM
title_fullStr Direct CP violation in charm and flavor mixing beyond the SM
title_full_unstemmed Direct CP violation in charm and flavor mixing beyond the SM
title_short Direct CP violation in charm and flavor mixing beyond the SM
title_sort direct cp violation in charm and flavor mixing beyond the sm
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP04(2012)060
http://cds.cern.ch/record/1420400
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