#StudentSeminar: Real-time event reconstruction to enhance new physics searches at LHCb

por Jiahui Zhuo (IFIC)

lunes 30 mar. 2026 15:00 → 16:30 Europe/Madrid

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

The upgraded LHCb detector in Run 3 operates at five times the luminosity of Run 2. At this luminosity, the trigger yield of the former hardware trigger saturates for hadronic decay modes, so it was replaced with a fully software-based trigger. To make this possible, the entire event must be reconstructed in software at the full 30 MHz collision rate.
This talk presents the author's contributions to the real-time event reconstruction in the GPU-based first-stage software trigger (HLT1) that processes data at 30 MHz. These contributions include algorithms that cover different types of particle trajectories through the detector and, for the first time in HLT1, enable the real-time reconstruction of particles decaying outside the vertex detector. This talk also discusses the potential physics impact on long-lived particle searches, where these algorithms open sensitivity to decay channels previously inaccessible at this trigger level.

SeminarUV.pdf