Aachen 2019 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 70: QCD (Experiment)
T 70.4: Vortrag
Mittwoch, 27. März 2019, 16:45–17:00, H10
Amplitude analysis of the Λb0 → Λc+ D0 K− decay at the LHCb experiment — •Alessio Piucci, Stephanie Hansmann-Menzemer, Sebastian Neubert, Marian Stahl, and Nicola Skidmore — Physikalisches Institut, Heidelberg, Germany
Pentaquark-like candidates have been observed in 2015 by the LHCb experiment in the Λb0 → J/ψ p K− decay. Since then a variety of theoretical models and predictions have been proposed to describe their nature. One of the most prevalent ones interprets the two pentaquark states as D Σc* and D* Σc hadronic molecules, predominantly decaying into D0* Λc+. This talk will focus on the amplitude analysis of the Λb0 → Λc+ D0 K− decay using the full LHCb dataset; this decay is a golden channel for testing the validity of the above-mentioned molecular model. In addition to the two already-observed pentaquark candidates, possible extra hidden-charm pentaquark states are predicted to lie in the mass range investigated by the analysis.