Erlangen 2026 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 29: Hadron Structure and Spectroscopy V

HK 29.6: Vortrag

Donnerstag, 19. März 2026, 15:15–15:30, PHIL C 301

Selection and Resonant Structures in Semileptonic B → Dπµν Decays at LHCb — •Piet Nogga and Sebastian Neubert — University of Bonn

Semileptonic B decays provide a powerful environment to study the strong interaction, as the hadronic system is produced in isolation from the leptonic system. This offers a clean setting for investigating hadronic resonances, free from interference with the leptonic part of the decay. However, the presence of an undetected neutrino makes the reconstruction of these decays experimentally challenging and introduces substantial background contamination.

The LHCb experiment records large and high-quality samples of B mesons, making it an excellent environment to study such semileptonic processes. This talk presents the analysis of the decay B → Dπµν, with a focus on the development and optimization of the selection processes required to reconstruct this challenging final state. A combination of simulation and data-driven processes is necessary to maximize signal purity, and the talk will cover the corresponding selection strategy. These optimizations allow us to investigate the hadronic system in detail, including possible intermediate resonances and their potential molecular nature.

Keywords: Semileptonic; Spectroscopy; Exotic Hadrons