Master formula for ε′/ε beyond the Standard Model

Master formula for ε′/ε beyond the Standard Model

We present for the first time a master formula for ε′/ε, the ratio probing direct CP violation in K→ππ decays, valid in any ultraviolet extension of the Standard Model (BSM). The formula makes use of hadronic matrix elements of BSM operators calculated recently in the Dual QCD approach and the ones...

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Main Authors: Jason Aebischer, Christoph Bobeth, Andrzej J. Buras, Jean-Marc Gérard, David M. Straub
Format: Article
Language:English
Published: Elsevier 2019-05-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269319302485
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spelling doaj-469af8d305714581b6bdd7c7acd5b7262020-11-25T00:20:49ZengElsevierPhysics Letters B0370-26932019-05-01792465469Master formula for ε′/ε beyond the Standard ModelJason Aebischer0Christoph Bobeth1Andrzej J. Buras2Jean-Marc Gérard3David M. Straub4Excellence Cluster Universe, Technische Universität München, Boltzmannstr. 2, 85748 Garching, GermanyPhysik Department, TU München, James-Franck-Straße, 85748 Garching, Germany; Excellence Cluster Universe, Technische Universität München, Boltzmannstr. 2, 85748 Garching, Germany; Corresponding author.TUM Institute for Advanced Study, Lichtenbergstr. 2a, 85748 Garching, GermanyCentre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, 1348 Louvain-la-Neuve, BelgiumExcellence Cluster Universe, Technische Universität München, Boltzmannstr. 2, 85748 Garching, GermanyWe present for the first time a master formula for ε′/ε, the ratio probing direct CP violation in K→ππ decays, valid in any ultraviolet extension of the Standard Model (BSM). The formula makes use of hadronic matrix elements of BSM operators calculated recently in the Dual QCD approach and the ones of the SM operators from lattice QCD. We emphasize the large impact of several scalar and tensor BSM operators in the context of the emerging ε′/ε anomaly. We have implemented the results in the open source code flavio.http://www.sciencedirect.com/science/article/pii/S0370269319302485
collection DOAJ
language English
format Article
sources DOAJ
author Jason Aebischer
Christoph Bobeth
Andrzej J. Buras
Jean-Marc Gérard
David M. Straub
spellingShingle Jason Aebischer
Christoph Bobeth
Andrzej J. Buras
Jean-Marc Gérard
David M. Straub
Master formula for ε′/ε beyond the Standard Model
Physics Letters B
author_facet Jason Aebischer
Christoph Bobeth
Andrzej J. Buras
Jean-Marc Gérard
David M. Straub
author_sort Jason Aebischer
title Master formula for ε′/ε beyond the Standard Model
title_short Master formula for ε′/ε beyond the Standard Model
title_full Master formula for ε′/ε beyond the Standard Model
title_fullStr Master formula for ε′/ε beyond the Standard Model
title_full_unstemmed Master formula for ε′/ε beyond the Standard Model
title_sort master formula for ε′/ε beyond the standard model
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2019-05-01
description We present for the first time a master formula for ε′/ε, the ratio probing direct CP violation in K→ππ decays, valid in any ultraviolet extension of the Standard Model (BSM). The formula makes use of hadronic matrix elements of BSM operators calculated recently in the Dual QCD approach and the ones of the SM operators from lattice QCD. We emphasize the large impact of several scalar and tensor BSM operators in the context of the emerging ε′/ε anomaly. We have implemented the results in the open source code flavio.
url http://www.sciencedirect.com/science/article/pii/S0370269319302485
work_keys_str_mv AT jasonaebischer masterformulaforeebeyondthestandardmodel
AT christophbobeth masterformulaforeebeyondthestandardmodel
AT andrzejjburas masterformulaforeebeyondthestandardmodel
AT jeanmarcgerard masterformulaforeebeyondthestandardmodel
AT davidmstraub masterformulaforeebeyondthestandardmodel
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