Speaker
Nikita Kozlov
(Mephi)
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 300 $\Omega_b^- \to \Omega^- J/\psi$ decay events were reconstructed using proton-proton collision data recorded during Run 2(2016-2018) and Run 3(2022-2026) at center-of-mass energies of $\sqrt{s} = 13$ TeV and $\sqrt{s} = 13.6$ TeV, with integrated luminosities of 140 $fb^{-1}$ and 309.5 $fb^{-1}$, 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
(Mephi)
Co-authors
Mr.
Kirill Ivanov
(MIT)
Ruslan Chistov
(LPI RAS)
