Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach
We present the first QCD-based calculation of hadronic matrix elements with penguin topology determining direct CP-violating asymmetries in D0→π−π+ and D0→K−K+ nonleptonic decays. The method is based on the QCD light-cone sum rules and does not rely on any model-inspired amplitude decomposition, ins...
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Elsevier
2017-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317307827 |
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doaj-cbc003c3c9114c7d84baa01c48d36ef62020-11-25T01:11:49ZengElsevierPhysics Letters B0370-26931873-24452017-11-01774C23524210.1016/j.physletb.2017.09.070Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approachAlexander Khodjamirian0Alexey A. Petrov1Theoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, D-57068 Siegen, GermanyTheoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, D-57068 Siegen, GermanyWe present the first QCD-based calculation of hadronic matrix elements with penguin topology determining direct CP-violating asymmetries in D0→π−π+ and D0→K−K+ nonleptonic decays. The method is based on the QCD light-cone sum rules and does not rely on any model-inspired amplitude decomposition, instead leaning heavily on quark–hadron duality. We provide a Standard Model estimate of the direct CP-violating asymmetries in both pion and kaon modes and their difference and comment on further improvements of the presented computation.http://www.sciencedirect.com/science/article/pii/S0370269317307827 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Alexander Khodjamirian Alexey A. Petrov |
| spellingShingle |
Alexander Khodjamirian Alexey A. Petrov Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach Physics Letters B |
| author_facet |
Alexander Khodjamirian Alexey A. Petrov |
| author_sort |
Alexander Khodjamirian |
| title |
Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach |
| title_short |
Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach |
| title_full |
Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach |
| title_fullStr |
Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach |
| title_full_unstemmed |
Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach |
| title_sort |
direct cp asymmetry in d→π−π+ and d→k−k+ in qcd-based approach |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 1873-2445 |
| publishDate |
2017-11-01 |
| description |
We present the first QCD-based calculation of hadronic matrix elements with penguin topology determining direct CP-violating asymmetries in D0→π−π+ and D0→K−K+ nonleptonic decays. The method is based on the QCD light-cone sum rules and does not rely on any model-inspired amplitude decomposition, instead leaning heavily on quark–hadron duality. We provide a Standard Model estimate of the direct CP-violating asymmetries in both pion and kaon modes and their difference and comment on further improvements of the presented computation. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269317307827 |
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AT alexanderkhodjamirian directcpasymmetryindppanddkkinqcdbasedapproach AT alexeyapetrov directcpasymmetryindppanddkkinqcdbasedapproach |
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