Dortmund 2021 – scientific programme
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T: Fachverband Teilchenphysik
T 32: Flavour physics VI
T 32.3: Talk
Tuesday, March 16, 2021, 16:30–16:45, Tg
Rare baryonic decays at LHCb — Johannes Albrecht, Maik Becker, •Vitalii Lisovskyi, and Janina Nicolini — TU Dortmund
Flavour-changing neutral-current b → s ℓ+ ℓ− transitions are forbidden at tree level in the Standard Model, and can only occur at loop level. Therefore, they are rare and sensitive to potential New Physics effects.
A number of tensions has been observed in the recent years in such rare decays of mesons containing a b quark ("beauty mesons"). Beauty baryons offer complementary probes owing to their non-zero spin. Baryonic decays often have orthogonal experimental and theoretical challenges, compared to mesonic transitions. LHCb has actively explored the rare decays of the Λb baryon, performing angular analyses and lepton universality tests. Decays of other beauty baryons, such as Ξb or Ωb, may offer complementary observables, and are currently being explored. This talk presents an overview of the LHCb physics programme with rare baryonic decays, including recent results and future prospects.