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

C. S. Kim, Yeo Woong Yoon

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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
Volume2011
Issue number11
DOIs
Publication statusPublished - 2011 Nov 21

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factorization
mesons
quantum chromodynamics
operators
decay
divergence
coefficients
matrices

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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abstract = "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.",
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Order α2 s magnetic penguin correction for B decay to light mesons. / Kim, C. S.; Yoon, Yeo Woong.

In: Journal of High Energy Physics, Vol. 2011, No. 11, 003, 21.11.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Order α2 s magnetic penguin correction for B decay to light mesons

AU - Kim, C. S.

AU - Yoon, Yeo Woong

PY - 2011/11/21

Y1 - 2011/11/21

N2 - 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.

AB - 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.

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