<?xml version="1.0" encoding="UTF-8"?> <articles> <article xmlns:xlink="http://www.w3.org/1999/xlink/"> <front> <publisher> <publisher-name/> <publisher-loc/> </publisher> <article-meta> <title-group> <article-title>Multi-strange baryon spectroscopy at the LHCb experiment in $\Omega_c^0 \rightarrow \Xi^- K^- \pi^+ \pi^+$ decays</article-title> </title-group> <article-id pub-id-type="publisher-id"/> <contrib-group> <contrib contrib-type="author"> <name> <surname>Garcia Gazulla</surname> <given-names>Carla</given-names> </name> <aff> <institution>U. Barcelona (main)</institution> </aff> </contrib> </contrib-group> <pub-date pub-type="pub"> <year>2024</year> </pub-date> <self-uri xlink:href="http://cds.cern.ch/record/2921782"/> <self-uri xlink:href="http://cds.cern.ch/record/2921782/files/CERN-THESIS-2024-308.pdf"/> </article-meta> <abstract>In this study, the decay $\Omega_c^0 \rightarrow \Xi^- K^- \pi^+ \pi^+$ is analysed to search for the presence of excited $\Omega^-$ baryon states. Using data from the LHCb experiment, a Boosted Decision Tree (BDT) classifier is developed, enhancing the signal-to-background ratio by a factor 2 compared to standard selection criteria. This approach resulted in a clean $\Omega_c^0$ mass peak, enabling the exploration of excited states. The invariant mass spectra reveal hints of a potential resonance.</abstract> </front> <article-type>technical-report</article-type> </article> </articles>