Journée de la saveur à IJCLab

Angular analysis of the decay Λb0→Λℓ+ℓ− at high q2 with the LHCb experiment (10'+3')

2 juin 2023, 15:08

13m

200/0-Auditorium - Auditorium P. Lehmann (IJCLab)

Orateur

Janina Nicolini (IJCLab / TU Dortmund)

Description

To improve the understanding of the differences observed in several different observables of mesonic $b\to s{\ell }^{+}{\ell }^{-}$ transitions, it is important to also study $b\to s{\ell }^{+}{\ell }^{-}$ transitions in baryon decays.
The decay ${\mathrm{\Lambda }}_b^0\to \mathrm{\Lambda }{\ell }^{+}{\ell }^{-}$ is particular interesting due to the fact that it is the most abundant produced weakly decaying b-baryon. Studying the angular distribution of both the muon and electron decay of ${\mathrm{\Lambda }}_b^0\to \mathrm{\Lambda }{\ell }^{+}{\ell }^{-}$ allows to precisely test the Standard Model of particle physics and provide a novel test of lepton flavour universality with the angular coefficients.
In my talk I will cover the current status of the angular analysis and the prospects of the test of lepton flavour universality with the angular coefficients.

Documents de présentation

Flavourday2023_JNicolini.pdf