Joint Semileptonic meeting: LHCb and Theory

Wednesday 25 Mar 2026, 15:00 → 18:45 Europe/Zurich

4/S-056 (CERN)

Abhijit Mathad, Biljana Mitreska (The University of Manchester (GB)), Ricardo Vazquez Gomez (University of Barcelona (ES))

This talk will discuss the problem of describing semileptonic decays into two final-state hadrons in a model-independent manner. After introducing the challenges, I will present a first complete parameterization of these decays and present results from a fit to B -> pi pi l nu data. Next, the  opportunities to further our understanding of the hadron spectrum through targeted studies of angular spectra in semileptonic decays will be discussed and sensitivity estimates for the discovery of the D0*(2100) in B -> D pi l nu decays will be shown. Finally, the simulation of semileptonic decays beyond the narrow-width limit using EvtGen will be examined and point to the current shortcomings. 

recording.mp4

15:00 → 15:30 Challenges and opportunities of semileptonic decays beyond the narrow width limit

Speaker: Florian Herren (UZH)

15:30 → 15:45 Discussion