Matching of gauge invariant dimension-six operators for bs and bc transitions

  • Jason Aebischer
  • Andreas Crivellin
  • Matteo Fael
  • Christoph Greub
Open Access
Regular Article - Theoretical Physics


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 bs and bc 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 bs transitions already at tree level, but can give relevant one-loop matching effects.


Effective field theories Heavy Quark Physics Beyond Standard Model 


Open Access

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© The Author(s) 2016

Authors and Affiliations

  • Jason Aebischer
    • 1
  • Andreas Crivellin
    • 2
  • Matteo Fael
    • 1
  • Christoph Greub
    • 1
  1. 1.Albert Einstein Center for Fundamental PhysicsInstitute for Theoretical Physics, University of BernBernSwitzerland
  2. 2.CERN, Theory DivisionGeneva 23Switzerland

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