Thesis defense - Aloïs Caillet

mercredi 30 sept. 2026, 14:00 → 16:30 Europe/Paris

Amphithéâtre George Charpak (LPNHE)

Aloïs Caillet (LPNHE)

The PhD Defense will be held at Amphithéâtre Georges Charpak at Sorbonne Université at Jussieu:
Tower 22, RDC level, 4 Pl. Jussieu, 75005 Paris

Jury composition:

Chair of the Jury	Mme. Kalliopi PETRAKI
Reviewer	M. Roberto COVARELLI
Reviewer	M. Karim TRABELSI
Examiner	Mme. Marta CALVI
Examiner	M. Méril REBOUD
Supervisor	M. Francesco POLCI
Co-supervisor	M. Pascal VINCENT

 

Videoconference (zoom link): TBA

14:00 → 14:50 Presentation

Abstract:

We determine the CKM matrix element $|V_{ub}|$ through an exclusive study of the $B_s^0\to K\mu\nu_\mu$ decay channel. The data set consists of events recorded by the LHCb detector at the LHC at CERN during Run 2, from 2016 to 2018. The value of $|V_{ub}|$ is obtained from the branching fraction of the $B_s^0\to K\mu\nu_\mu$ decay, which is inferred from the reconstructed $B_s^0$ mass spectrum. Furthermore, a neural network model will be trained on Run 3 (2024) simulations of missing-track decays in order to improve the efficiency of $b$-hadron association to primary vertices with respect to the current method.

Orateur: Aloïs Caillet (LPNHE)

14:50 → 15:50 Questions

15:50 → 16:30 Jury closed session and deliberation