Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude

Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude

The computation of direct CP asymmetries in charmless B decays at next-to-next-to-leading order (NNLO) in QCD is of interest to ascertain the short-distance contribution. Here we compute the two-loop penguin contractions of the current–current operators Q1,2 and provide a first estimate of NNLO CP a...

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Main Authors: G. Bell, M. Beneke, T. Huber, Xin-Qiang Li
Format: Article
Language:English
Published: Elsevier 2015-11-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269315007121
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spelling doaj-3d7aae5835474943afd17312242c02502020-11-24T22:38:37ZengElsevierPhysics Letters B0370-26931873-24452015-11-01750C34835510.1016/j.physletb.2015.09.037Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitudeG. Bell0M. Beneke1T. Huber2Xin-Qiang Li3Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United KingdomPhysik Department T31, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, GermanyTheoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Strasse 3, D-57068 Siegen, GermanyInstitute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, Hubei 430079, PR ChinaThe computation of direct CP asymmetries in charmless B decays at next-to-next-to-leading order (NNLO) in QCD is of interest to ascertain the short-distance contribution. Here we compute the two-loop penguin contractions of the current–current operators Q1,2 and provide a first estimate of NNLO CP asymmetries in penguin-dominated b→s transitions.http://www.sciencedirect.com/science/article/pii/S0370269315007121
collection DOAJ
language English
format Article
sources DOAJ
author G. Bell
M. Beneke
T. Huber
Xin-Qiang Li
spellingShingle G. Bell
M. Beneke
T. Huber
Xin-Qiang Li
Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude
Physics Letters B
author_facet G. Bell
M. Beneke
T. Huber
Xin-Qiang Li
author_sort G. Bell
title Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude
title_short Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude
title_full Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude
title_fullStr Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude
title_full_unstemmed Two-loop current–current operator contribution to the non-leptonic QCD penguin amplitude
title_sort two-loop current–current operator contribution to the non-leptonic qcd penguin amplitude
publisher Elsevier
series Physics Letters B
issn 0370-2693
1873-2445
publishDate 2015-11-01
description The computation of direct CP asymmetries in charmless B decays at next-to-next-to-leading order (NNLO) in QCD is of interest to ascertain the short-distance contribution. Here we compute the two-loop penguin contractions of the current–current operators Q1,2 and provide a first estimate of NNLO CP asymmetries in penguin-dominated b→s transitions.
url http://www.sciencedirect.com/science/article/pii/S0370269315007121
work_keys_str_mv AT gbell twoloopcurrentcurrentoperatorcontributiontothenonleptonicqcdpenguinamplitude
AT mbeneke twoloopcurrentcurrentoperatorcontributiontothenonleptonicqcdpenguinamplitude
AT thuber twoloopcurrentcurrentoperatorcontributiontothenonleptonicqcdpenguinamplitude
AT xinqiangli twoloopcurrentcurrentoperatorcontributiontothenonleptonicqcdpenguinamplitude
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