Order \( \alpha_s^2 \) magnetic penguin correction for \(B\) decay to light mesons
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Publication:2261201
DOI10.1007/JHEP11(2011)003zbMATH Open1306.81348arXiv1107.1601OpenAlexW3099505179MaRDI QIDQ2261201
Author name not available (Why is that?)
Publication date: 6 March 2015
Published in: (Search for Journal in Brave)
Abstract: We compute the order alpha_s^2 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 pi decays, and we find that the order alpha_s^2 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.
Full work available at URL: https://arxiv.org/abs/1107.1601
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