Moscow International School of Physics 2020

3-9 March 2020
HSE Study Center “Voronovo”
Europe/Moscow timezone

Observation of the Lambda_b -> J/psi Lambda phi decay

3 Mar 2020, 17:54
12m
HSE Study Center “Voronovo”

HSE Study Center “Voronovo”

Voronovskoe, Moscow Russian Federation
Talk [10+2 min] Young Scientist Forum

Nikita Petrov

Description

The observation of the $\Lambda_b^0\rightarrow J/\psi\Lambda\phi$ decay is reported using proton-proton collision data collected at $\sqrt{s} = 13$ TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60 $fb^{-1}$. The ratio of branching fractions $B(\Lambda_b^0\rightarrow J/\psi\Lambda\phi)/B(\Lambda_b^0\rightarrow \psi(2S)\Lambda)$ is measured to be $(8.26 \pm 0.90(stat) \pm 0.68(syst) \pm 0.11(B)) \times 10^{-2}$, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of $\phi$ and $\psi(2S)$ decays to the reconstructed final states.

Primary authors

Nikita Petrov Ruslan Chistov (LPI RAS)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×