K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD
Abstract We perform for the first time a direct calculation of on-shell K → ππ hadronic matrix elements of chromomagnetic operators (CMO) in the Standard Model and beyond. To this end, we use the successful Dual QCD (DQCD) approach in which we also consider off-shell K − π matrix elements that allow...
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SpringerOpen
2018-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | http://link.springer.com/article/10.1007/JHEP07(2018)126 |
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doaj-df25f13f0ebd412e93154db5d2248d252020-11-25T00:40:30ZengSpringerOpenJournal of High Energy Physics1029-84792018-07-012018711610.1007/JHEP07(2018)126K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCDAndrzej J. Buras0Jean-Marc Gérard1TUM Institute for Advanced StudyCentre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de LouvainAbstract We perform for the first time a direct calculation of on-shell K → ππ hadronic matrix elements of chromomagnetic operators (CMO) in the Standard Model and beyond. To this end, we use the successful Dual QCD (DQCD) approach in which we also consider off-shell K − π matrix elements that allow the comparison with lattice QCD calculations presented recently by the ETM collaboration. Working in the SU(3) chiral limit, we find for the single B parameter B CMO = 0.33. Using the numerical results provided by the ETM collaboration we argue that only small corrections beyond that limit are to be expected. Our results are relevant for new physics scenarios in the context of the emerging ε′/ε anomaly strongly indicated within DQCD and supported by RBC-UKQCD lattice collaboration.http://link.springer.com/article/10.1007/JHEP07(2018)126Kaon PhysicsBeyond Standard ModelLattice QCD |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Andrzej J. Buras Jean-Marc Gérard |
| spellingShingle |
Andrzej J. Buras Jean-Marc Gérard K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD Journal of High Energy Physics Kaon Physics Beyond Standard Model Lattice QCD |
| author_facet |
Andrzej J. Buras Jean-Marc Gérard |
| author_sort |
Andrzej J. Buras |
| title |
K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD |
| title_short |
K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD |
| title_full |
K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD |
| title_fullStr |
K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD |
| title_full_unstemmed |
K → ππ and K − π matrix elements of the chromomagnetic operators from Dual QCD |
| title_sort |
k → ππ and k − π matrix elements of the chromomagnetic operators from dual qcd |
| publisher |
SpringerOpen |
| series |
Journal of High Energy Physics |
| issn |
1029-8479 |
| publishDate |
2018-07-01 |
| description |
Abstract We perform for the first time a direct calculation of on-shell K → ππ hadronic matrix elements of chromomagnetic operators (CMO) in the Standard Model and beyond. To this end, we use the successful Dual QCD (DQCD) approach in which we also consider off-shell K − π matrix elements that allow the comparison with lattice QCD calculations presented recently by the ETM collaboration. Working in the SU(3) chiral limit, we find for the single B parameter B CMO = 0.33. Using the numerical results provided by the ETM collaboration we argue that only small corrections beyond that limit are to be expected. Our results are relevant for new physics scenarios in the context of the emerging ε′/ε anomaly strongly indicated within DQCD and supported by RBC-UKQCD lattice collaboration. |
| topic |
Kaon Physics Beyond Standard Model Lattice QCD |
| url |
http://link.springer.com/article/10.1007/JHEP07(2018)126 |
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AT andrzejjburas kppandkpmatrixelementsofthechromomagneticoperatorsfromdualqcd AT jeanmarcgerard kppandkpmatrixelementsofthechromomagneticoperatorsfromdualqcd |
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