publication . Article . Other literature type . 2016

Assessing lepton-flavour non-universality from $B\to K^*\ell\ell$ angular analyses

Capdevila, Bernat; Descotes-Genon, Sébastien; Matias, Joaquim; Virto, Javier;
Open Access English
  • Published: 14 Oct 2016
  • Publisher: Springer/SISSA
The B → K ∗ μμ decay exhibits deviations with respect to Standard Model expectations and the measurement of the ratio R K hints at a violation of lepton-flavour universality in B → K ℓℓ transitions. Both effects can be understood in model-independent fits as a short-distance contribution to the Wilson coefficient C 9 μ , with some room for similar contributions in other Wilson coefficients for b → sμμ transitions. We discuss how a full angular analysis of B → K ∗ ee and its comparison with B → K ∗ μμ could improve our understanding of these anomalies and help confirming their interpretation in terms of short-distance New Physics. We discuss several observables o...
free text keywords: Nuclear and High Energy Physics, Universality (philosophy), Physics, Lepton, Particle physics, Flavour, Physics beyond the Standard Model
Funded by
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
EC| InvisiblesPlus
  • Funder: European Commission (EC)
  • Project Code: 690575
  • Funding stream: H2020 | MSCA-RISE
Ruđer Bošković Institute: Twinning for a step forward of the Theoretical Physics Division
  • Funder: European Commission (EC)
  • Project Code: 692194
  • Funding stream: H2020 | CSA

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