Towards next-to-next-to-leading-log accuracy for the width difference in the B s − B ¯ s $$ {B}_s-{\overline{B}}_s $$ system: fermionic contributions to order (m c /m b )0 and (m c /m b )1

Towards next-to-next-to-leading-log accuracy for the width difference in the B s − B ¯ s $$ {B}_s-{\overline{B}}_s $$ system: fermionic contributions to order (m c /m b )0 and (m c /m b )1

Abstract We calculate a class of three-loop Feynman diagrams which contribute to the next-to-next-to-leading logarithmic approximation for the width difference ΔΓ s in the B s − B ¯ s $$ {B}_s-{\overline{B}}_s $$ system. The considered diagrams contain a closed fermion loop in a gluon propagator and...

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Bibliographic Details
Main Authors: H. M. Asatrian, A. Hovhannisyan, U. Nierste, A. Yeghiazaryan
Format: Article
Language:English
Published: SpringerOpen 2017-10-01
Series:Journal of High Energy Physics
Subjects:
NLO Computations
Online Access:http://link.springer.com/article/10.1007/JHEP10(2017)191

Internet

http://link.springer.com/article/10.1007/JHEP10(2017)191

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