24-27 November 2022
Karlsruhe Institute of Technology
Europe/Berlin timezone

Search for the rare decay $\Omega_{b}^{-} \to \Omega^{-}\mu^{-}\mu^{+}$ at the LHCb experiment

26 Nov 2022, 11:00
Gaede-Hörsaal (KIT Campus South)


KIT Campus South

KIT Campus map: https://www.kit.edu/campusplan/ Building: 30.22 Room: 130.1 Address: Campus South, Gaede Hörsaal Coordinates: 49.01265, 8.41044


Janina Nicolini (TU Dortmund University/ Université Paris-Saclay)


Rare decays of heavy-quark hadrons provide a powerful way to probe indirectly for presence of phenomena beyond the Standard Model of particle physics.
At the LHCb experiment several ${b\to s\ell\ell}$ transitions, such as the rare decays $B\to K\ell\ell$ or ${B\to K^{*}\ell\ell}$, have been studied. They show tensions towards the Standard Model predictions in several observables, such as lepton universality ratios ($R_{K}$, $R_{K^{*}}$) or angular observables. So far most of the measurements have been focused on mesons and the $\Lambda_{b}$ baryon. To improve the understanding of the anomalies and widen the available knowledge, it is crucial to study ${b\to s\ell\ell}$ transitions for other weakly decaying baryons as well.

Therefore, the primary aim of the presented analysis is to observe the decay ${\Omega_{b}^{-} \to \Omega^{-}\mu^{-}\mu^{+}}$. If successful, the branching ratio relative to the decay ${\Omega_{b}^{-} \to \Omega^{-} J/\Psi(\to\mu^{-}\mu^{+})}$ will be measured.

The used data set corresponds to an integrated luminosity of ${9\:\mathrm{fb}^{-1}}$, which has been collected with the LHCb experiment from 2011 to 2018. In this talk the current status of the analysis is presented.

Category Particle / Astroparticle / Cosmology (Experiment)

Primary author

Janina Nicolini (TU Dortmund University/ Université Paris-Saclay)


Prof. Johannes Albrecht (TU Dortmund University) Dr. Vitalii Lisovskyi (TU Dortmund University)

Presentation Materials

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