Baryon spectroscopy at the LHCb experiment in Ω0c → Ω−π+π−π+ decays

Abstract

This project investigates the resonance spectrum of the Ω− baryon through the decay Ω0c→ Ω−π+π−π+, using data from the LHCb Run 2. A dedicated selection was applied to suppressbackground and reconstruct Ω0c candidates, and combining the DDL and DDD track categories, the signal yield was amplified. The sPlot method was used for background subtraction. The resulting Ω−π+π− mass spectra show differences between pion pairings, and the limited statistics prevent any firm interpretation.