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 language | English |
|---|---|
| Article number | 003 |
| Journal | Journal of High Energy Physics |
| Volume | 2011 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2011 Nov 21 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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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 journal › Article
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.
UR - http://www.scopus.com/inward/record.url?scp=81255177548&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=81255177548&partnerID=8YFLogxK
U2 - 10.1007/JHEP11(2011)003
DO - 10.1007/JHEP11(2011)003
M3 - Article
AN - SCOPUS:81255177548
VL - 2011
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
IS - 11
M1 - 003
ER -