SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 54: Flavor IV

T 54.3: Vortrag

Mittwoch, 22. März 2023, 16:20–16:35, HSZ/0304

Flavour Tagging in Run 3 at LHCb — •Micol Olocco¹, Claire Prouve², Biljana Mitreska¹, and Johannes Albrecht¹ — ¹TU Dortmund University, Dortmund, Germany — ²University of Santiago de Compostela, Santiago, Spain

The knowledge of the B meson flavour at time of production is crucial for measurements of time-dependent CP violation and flavour oscillations. Flavour tagging algorithms exploit correlations between the B meson flavour and features of the global event in order to tag the candidate as B or B with a corresponding efficiency and mistag probability. Beside the information that is saved in real time, it is fundamental to optimize the tagging power of the algorithm since it heavily affects the uncertainty on the CP asymmetry factor.

In the Run 3 of the LHC, the LHCb experiment will operate at the average non-empty bunch crossing rate of 30 MHz with an upgraded detector and a solely software-based trigger. The current status and challenges in flavour tagging algorithms for Run 3 are presented, together with their estimated performance at trigger level.