Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 8: Flavour Physics I

T 8.1: Vortrag

Montag, 16. März 2026, 16:15–16:30, KH 01.011

Sensitivity study on combined analysis of beyond the Standard Model contributions in B⁰→ D^*−τ⁺ν_τ decay. — •Marco Colonna — TU Dortmund University

Semileptonic b→ c ℓν decays are excellent probe for testing Lepton Flavour Universality and New Physics effects. New Physics contributions are measured via their corresponding Wilson coefficients and in several fit configurations including different New Physics operators. A study of sensitivity of a combined measurement of Wilson coefficients using of B→ D^*τν decays in proton-proton collision data collected by LHCb and electron-positron collision data from Belle II has been done, showing enhanced sensitivity from shared parameters between different datasets. We discuss the most recent progress in developing data reinterpretation techniques, as well as the prospects and challenges for direct measurements of New Physics in semileptonic decays at the collider experiments.

Keywords: LHCb; Belle II; Semileptonic decays; Wilson Coefficients