کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1840849 1031252 2012 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low- and high-energy expansion of heavy-quark correlators at next-to-next-to-leading order
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Low- and high-energy expansion of heavy-quark correlators at next-to-next-to-leading order
چکیده انگلیسی

We calculate three-loop corrections to correlation functions of heavy-quark currents in the low- and high-energy regions. We present 30 coefficients both in the low-energy and the high-energy expansion of the scalar and the vector correlator with non-diagonal flavour structure. In addition we compute 30 coefficients in the high-energy expansion of the diagonal vector, axial-vector, scalar and pseudo-scalar correlators. Possible applications of our new results are improvements of lattice-based quark-mass determinations and the approximate reconstruction of the full momentum dependence of the correlators.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 859, Issue 1, 1 June 2012, Pages 1–12
نویسندگان
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