Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP12(2014)131
Keywords
Rare Decays; Beyond Standard Model; B-Physics
Categories
Funding
- European Research Council under the European Union's Seventh Framework Programme / ERC [279972]
- STFC
- STFC [ST/L000385/1, ST/J000434/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000385/1, ST/J000434/1, 1203982] Funding Source: researchfish
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The LHCb collaboration has recently presented their result on R-K = B(B+ -> K+ mu(+) mu(-)) /B(B+ -> K(+)e(+)e(-)) for the dilepton invariant mass bin m 2 m(ll)(2) = 1 - 6 GeV2 (l = mu,e). The measurement shows an intriguing 2.6 sigma deviation from the Standard Model (SM) prediction. In view of this, we study model independent New Physics (NP) explanations of R K consistent with other measurements involving b -> sl(+) l(-) transition, relaxing the assumption of lepton universality. We perform a Bayesian statistical fit to the NP Wilson Coefficients and compare the Bayes Factors of the different hypotheses in order to quantify their goodness-of-fit. We show that the data slightly favours NP in the muon sector over NP in the electron sector.
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