Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 51: Flavour Physics III
T 51.4: Talk
Wednesday, March 18, 2026, 17:00–17:15, KH 01.011
Angular analysis of Ωb− → Ξc+K−π− using LHCb Run3 data — •Dhruvanshu Parmar, Mikhail Mikhasenko, and Marian Stahl — Ruhr-Universität Bochum, Bochum, Germany
Using Run2 data, five excited states of Ωc0 were observed decaying into Ξc+K− in prompt inclusive production. From exclusive Ωb− decays, reconstructed with LHCb Run2 data, spin and parity of four out of the five previously observed states were studied. However, the results were inconclusive due to the limited statistics of Run2 dataset. To address this, the study of process Ωb− → Ξc+K−π− is motivated using Run3 data of LHCb experiment, enabling precise measurement of these quantum numbers of excited Ωc0 states. Additional sensitivity in helicity amplitude of Ωc0 is achieved by accounting for the spin and parity dependencies arising from Ξc+ decay. Selection techniques implemented to filter Ωb− events from Run3 data will be highlighted in the presentation, which are crucial to get necessary statistical precision for the angular analysis.
Keywords: Pentaquarks; Spectroscopy; Angular analysis; Charmed hadrons; Bottom hadrons