SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 127: Exp. Methods III
T 127.4: Vortrag
Donnerstag, 23. März 2023, 16:35–16:50, WIL/C129
Tracking efficiency studies for LHCb in Run 3 — Flavio Archilli1, •Rowina Caspary2, Giulia Frau2, and Peilian Li3 — 1Università di Roma Tor Vergata, Rome, Italy — 2Physikalisches Institut, Heidelberg University, Germany — 3CERN
The LHCb detector is dedicated to the measurement of particles containing b- and c-quarks and has recently been upgraded, aiming to take data with an instantaneous luminosity of 2×1033 cm−1s−1 at √s = 14 TeV . The tracking system is completely renewed and a new reconstruction and trigger framework is implemented, in which all the tracking reconstruction algorithms are redesigned.
The correct evaluation of the tracking reconstruction efficiency is essential for many measurements of the LHCb experiment. However the precision of the simulation is limited, thus a data-driven approach is developed exploiting a tag-and-probe method on a sample of Jψ→ µµ events to cross-check the track reconstruction efficiency in data. The difference of track reconstruction efficiency between simulation and data is then evaluated and exploited as calibration parameters. In addition, the effect of hadronic interactions on the track reconstruction efficiency is estimated using D0→ Kπ and D0→ Kπππ decays.