SciFi Tracker Online Monitoring and Data Quality at LHCb

by Halime Sazak

Tuesday 10 Nov 2026, 14:00 → 15:00 Europe/Berlin

P2-01-512 (TU Dortmund)

The LHCb experiment at CERN studies matter-antimatter asymmetries and tests the Standard Model through precision measurements of b-hadron decays. To cope with a fivefold increase in luminosity compared to Run 2, LHCb underwent a major upgrade for Runs 3, including a new Scintillating Fibre (SciFi) Tracker to enhance its tracking capabilities. It consists of 11 000 km of scintillating fibres read out by silicon photomultipliers, and is used to reconstruct charged-particle trajectories and momenta.

In this seminar I will describe how the SciFi is monitored online during operation, and how its performance is assessed run by run to determine the data quality for physics analyses. I will also briefly present the measurement of the CKM angle $\gamma$ using $\tilde{B}_s^0 \to \tilde{D}^{(*)0}\phi$ decays, currently in the LHCb Review Committee stage for Run 1+2 data, with the analysis of Run 3 data now in progress.

Announcement.pdf