2022/09/19 by F. Loparco, Loparco, Francesco
Engineering · Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2209.08831
openalex publication_date 2022/09/19 · openalex created_date 2022/09/21 · openalex updated_date 2026/08/04
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 → U ℓ ν_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.