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Anomalous Dimension Matrix for Radiative and Rare Semileptonic B Decays up to Three Loops

Abstract:
We compute the complete O(alphas^2) anomalous dimension matrix relevant for the b to s gamma, b to s gluon and b to s l+l- transitions in the standard model and some of its extensions. For radiative decays we confirm the results of Misiak and Munz, and of Chetyrkin, Misiak and Munz. The O(alphas^2) mixing of four-quark into semileptonic operators is instead a new result and represents one of the last missing ingredients of the next-to-next-to-leading-order analysis of rare semileptonic B meson decays.

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Authors


Gambino, P More by this author
Gorbahn, M More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Journal:
Nucl.Phys.B
Volume:
673
Pages:
238-262
Publication date:
2003-06-10
DOI:
URN:
uuid:d3cf6c61-e32e-4110-8fc6-f75042d953dc
Source identifiers:
177519
Local pid:
pubs:177519
Keywords:

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