Speaker
Nikita Kozlov
(Andreevich)
Description
Data collected by the CMS experiment at the Large Hadron Collider have been analyzed to study the decays of the $\Omega_b^-$ baryon. More than 250 $\Omega_b^- \to \Omega^- J/\psi$ decay events were reconstructed using proton-proton collision data recorded during Run 2 (2016–2018) and Run 3 (2022–2024) at center-of-mass energies of √s = 13 TeV and √s = 13.6 TeV, with integrated luminosities of 140 fb⁻¹ and 174.2 fb⁻¹, respectively. For the first time, a signal corresponding to the new decay channel $\Omega_b^- \to \Omega^- \psi(2S)$ has been observed, and its branching ratio relative to the well-established $\Omega_b^- \to \Omega^- J/\psi$ decay has been measured.
Primary author
Nikita Kozlov
(Andreevich)
Co-authors
Mr
Kirill Ivanov
(MIT)
Ruslan Chistov
(LPI RAS)
