Matching of gauge invariant dimension-six operators for b → s and b → c transitions

Aebischer, Jason; Crivellin, Andreas; Fael, Matteo; Greub, Christoph (2016). Matching of gauge invariant dimension-six operators for b → s and b → c transitions. Journal of High Energy Physics, 2016(5), 037. Springer 10.1007/JHEP05(2016)037

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New physics realized above the electroweak scale can be encoded in a model independent way in the Wilson coefficients of higher dimensional operators which are in-variant under the Standard Model gauge group. In this article, we study the matching of the SU(3)C × SU(2)L × U(1)Y gauge invariant dimension-six operators on the standard B physics Hamiltonian relevant for b → s and b → c transitions. The matching is performed at the electroweak scale (after spontaneous symmetry breaking) by integrating out the top quark, W , Z and the Higgs particle. We first carry out the matching of the dimension-six operators that give a contribution at tree level to the low energy Hamiltonian. In a second step, we identify those gauge invariant operators that do not enter b → s transitions already at tree level, but can give relevant one-loop matching effects.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Aebischer, Jason; Crivellin, Andreas; Fael, Matteo and Greub, Christoph

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

22 Aug 2016 13:28

Last Modified:

22 Aug 2016 13:28

Publisher DOI:

10.1007/JHEP05(2016)037

ArXiv ID:

1512.02830

BORIS DOI:

10.7892/boris.86101

URI:

https://boris.unibe.ch/id/eprint/86101

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