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NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c

Nuclear Physics B, no. 1 (2007): 62-82

引用116|浏览25

摘要

One of the most troublesome contributions to the NNLO QCD corrections to B¯→Xsγ originates from three-loop matrix elements of four-quark operators. A part of this contribution that is proportional to the QCD beta-function coefficient β0 was found in 2003 as an expansion in mc/mb. In the present paper, we evaluate the asymptotic behaviour ...更多

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