Göttingen 2025 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 31: Flavour physics II

T 31.8: Talk

Tuesday, April 1, 2025, 18:00–18:15, VG 1.104

Joint measurement of the b→ cτν Wilson Coefficients with LHCb and Belle II. — Johannes Albrecht¹, Florian Bernlochner², Biljana Mitreska¹, and •Marco Colonna¹ — ¹TU Dortmund University, Dortmund, Germany — ²University of Bonn, Germany

Semileptonic b→ c ℓν decays are excellent probe for testing Lepton Flavour Universality and New Physics (NP) effects. A combined measurement of NP Wilson coefficients is performed using of B→ D^*τν decays in proton-proton collision data collected by LHCb and electron-positron collision data from Belle II. The signal is extracted using a multidimensional fit to data using templated distributions derived from simulation and from control samples. New Physics contributions are measured via their corresponding Wilson coefficients and in several fit configurations that allow for different New Physics operators.

Keywords: LHCb; Semileptonic Decays; Wilson Coefficients