https://doi.org/10.1051/epjconf/202227000017
Inclusive b → {u, c}ℓ¯ v̅ℓ modes: Polarized/unpolarized Λb
Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Via Orabona 4, I-70126 Bari, Italy
* e-mail: francesco.loparco1@ba.infn.it
Published online: 17 November 2022
The increasing number of flavour anomalies motivates the investigation of new processes where tensions similar to the observed ones may emerge. It is necessary to identify observables sensitive to physics beyond the Standard Model. The analysis which follows concerns the inclusive semileptonic decays of polarized beauty baryons, computed through the Heavy Quark Expansion at O(1/mb3) and at the leading order in αs. New Physics interactions have been taken into account, extending the Standard Model b → Ulv¯l low-energy Hamiltonian, where U = {c, u} and ℓ = {e, μ, τ}, including the full set of D = 6 operators with left-handed neutrinos. Among the possible observables one can consider, the ones depending on the spin of the decaying baryon are very appealing and can be considered for physics programmes of future facilities, such as FCC-ee.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
