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Paper   IPM / Particles / 15628
School of Particles and Accelerator
  Title:   New global fits to bs data with all relevant parameters
1.  Tobias Hurth
2.  Alexandre Arbey
3.  Farvah Mahmoudi
4.  Siavash Neshatpour
  Status:   Submitted
  Journal: Nuclear and Particle Physics Proceedings
  Year:  2018
  Supported by:  IPM
The LHCb experiment has made several measurements in bs transitions which indicate tensions with the Standard Model predictions. Assuming the source of these tensions to be new physics, we present new global fits to all Wilson coefficients which can effectively receive beyond the Standard Model contributions. While the theoretically clean ratios RK(*) which are sensitive to lepton flavour non-universality may unambiguously establish lepton non-universal new physics in the near future, most of the other tensions with the SM in the bs data, in particular in the angular observables of the BK* μμ decay and in the branching ratio of the Bs → ϕμμ decay, depend on the estimates of non-factorisable power corrections. Therefore, we also analyse the dependence of the new global fit on these corrections.

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