Work

Semileptonic Bq decays to heavy tensor mesons

Year: 2026

Type: article

Abstract: A bstract The semileptonic decays of B q mesons ( q = u, d, s ) to J P = 2 + charmed mesons are investigated. The form factors parametrising the hadronic matrix elements of the weak vector and axial-vector quark currents are evaluated using light-cone QCD sum rules with external B q state, including the 3-particle contributions. The form factors of pseudoscalar and tensor quark currents occurring in extensions of the Standard Model are also determined. The relations expected in the heavy quark limit are tested, providing a hint about the size of finite heavy quark mass corrections for the various form factors. Results are presented for the semileptonic B q to heavy tensor meson decay rates in the Standard Model, and for the ratios testing Lepton Flavour Universality.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep08(2026)190

Authors: Pietro Colangelo, Fulvia De Fazio, Carlo la Torre, Giuseppe Roselli

Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Bari, University of Bari Aldo Moro

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: diamond

Funder: Istituto Nazionale di Fisica Nucleare

OpenAlex ID: W7159058581