Order α2 s magnetic penguin correction for B decay to light mesons

C. S. Kim, Yeo Woong Yoon

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We compute the order α2 s correction to the matrix element of magnetic penguin operator for B meson decaying to light mesons within the QCD factorization framework. We explicitly show that the soft and collinear divergences are canceled out, so that the validity of QCD factorization is confirmed. We present the result of the calculation in complete analytic forms. The result is also applied to B → K? decays, and we find that the order α2 s correction of magnetic penguin operator can considerably reduce the coefficient of penguin amplitude a c 4,I. The reduction is stronger for the imaginary part.

Original languageEnglish
Article number003
JournalJournal of High Energy Physics
Issue number11
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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