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

G. Bell; M. Beneke; T. Huber; Xin Qiang Li

doi:10.1016/j.physletb.2015.09.037

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

G. Bell, M. Beneke, T. Huber, Xin Qiang Li

Chair of Theoretical Elementary Particle Physics

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

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 Q_1,2 and provide a first estimate of NNLO CP asymmetries in penguin-dominated b→s transitions.

Original language	English
Pages (from-to)	348-355
Number of pages	8
Journal	Physics Letters B
Volume	750
DOIs	https://doi.org/10.1016/j.physletb.2015.09.037
State	Published - 12 Nov 2015

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10.1016/j.physletb.2015.09.037

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title = "Two-loop current-current operator contribution to the non-leptonic QCD penguin amplitude",

abstract = "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.",

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AU - Bell, G.

AU - Beneke, M.

AU - Huber, T.

AU - Li, Xin Qiang

PY - 2015/11/12

Y1 - 2015/11/12

N2 - 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.

AB - 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.

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U2 - 10.1016/j.physletb.2015.09.037

DO - 10.1016/j.physletb.2015.09.037

M3 - Article

AN - SCOPUS:84942244897

SN - 0370-2693

VL - 750

SP - 348

EP - 355

JO - Physics Letters B

JF - Physics Letters B

ER -

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

Abstract

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