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Measurements of lepton-flavour universality in semileptonic

Year: 2024

Type: article

Abstract: \nThe Belle and Belle II experiments have collected a 1.1 ab−1 sample of e+e− BB¯ collisions at the ϒ(4S ) resonance. These data, with low particle multiplicity, constrained initial state kinematics and excellent lepton identification, are an ideal environment to study lepton-flavour universality in semileptonic decays of the B meson. We present measurements of branching-fraction ratios that test the universality of τ and light leptons, using both exclusive and inclusive B semileptonic decays. We also report measurements of angular observables that probe universality between electrons and muons.\n

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/epjconf/202431204007/pdf

Author: Michele Mantovano

Institutions: University of Trieste, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W6959374451

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