Moscow International School of Physics 2020

Study of excited Lambda_b baryons at the CMS experiment

3 Mar 2020, 18:18

12m

HSE Study Center “Voronovo”

Talk [10+2 min] Young Scientist Forum Young Scientist Forum

Speaker

Sergey Polikarpov (NRNU MEPhI, LPI RAS)

Description

The study of excited ${\mathrm{\Lambda }}_{\mathrm{b}}^0$ baryons is reported, based on a data sample of $140$\,fb${}^{-1}$ collected with the CMS detector in proton-proton collision at centre-of-mass energy of 13 TeV. Existence of four baryon states ${\mathrm{\Lambda }}_{\mathrm{b}}^{\ast }(5912{)}^0$, ${\mathrm{\Lambda }}_{\mathrm{b}}^{\ast }(5920{)}^0$, ${\mathrm{\Lambda }}_{\mathrm{b}}^{\ast }(6146{)}^0$, and ${\mathrm{\Lambda }}_{\mathrm{b}}^{\ast }(6152{)}^0$ is confirmed and their masses are measured.

Presentation materials

MISP2020_Polikarpov_Lb.pdf