کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9855017 1527860 2005 42 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effective Hamiltonian for non-leptonic |ΔF|=1 decays at NNLO in QCD
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Effective Hamiltonian for non-leptonic |ΔF|=1 decays at NNLO in QCD
چکیده انگلیسی
We compute the effective Hamiltonian for non-leptonic |ΔF|=1 decays in the standard model including next-to-next-to-leading order QCD corrections. In particular, we present the complete three-loop anomalous dimension matrix describing the mixing of current-current and QCD penguin operators. The calculation is performed in an operator basis which allows to consistently use fully anticommuting γ5 in dimensional regularization at an arbitrary number of loops. The renormalization scheme dependences and their cancellation in physical quantities is discussed in detail. Furthermore, we demonstrate how our results are transformed to a different basis of effective operators which is frequently adopted in phenomenological applications. We give all necessary two-loop constant terms which allow to obtain the three-loop anomalous dimensions and the corresponding initial conditions of the two-loop Wilson coefficients in the latter scheme. Finally, we solve the renormalization group equation and give the analytic expressions for the low-energy Wilson coefficients relevant for non-leptonic B meson decays beyond next-to-leading order in both renormalization schemes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 713, Issues 1–3, 2 May 2005, Pages 291-332
نویسندگان
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