25–29 May 2026
Chulalongkorn University
Asia/Bangkok timezone

Online searches for long-lived particles at LHCb: BuSca (Buffer Scanner)

25 May 2026, 16:51
18m
Chulalongkorn University

Chulalongkorn University

Oral Presentation Track 2 - Online and real-time computing Track 2 - Online and real-time computing

Speaker

Valerii Kholoimov (EPFL - Ecole Polytechnique Federale Lausanne (CH))

Description

The new fully software-based trigger of the LHCb experiment at CERN operates at a 30 MHz data rate, opening a search window into previously unexplored regions of the physics phase space. The BuSca (Buffer Scanner) project at LHCb acquires and analyses data in real time, prior to any trigger decision, extending sensitivity to new particle lifetimes and mass ranges.
Displaced tracks that originate downstream of the LHCb vertex detector are reconstructed and selected. BuSca identifies hotspots in the data indicative of potential new long-lived particle candidates in a model-independent manner, providing strategic guidance for developing new trigger lines. In this talk, we will present the current status and potential developments of this pioneering framework, along with the results from the analysis of the Run 3 data.

Authors

Arantza De Oyanguren Campos (Univ. of Valencia and CSIC (ES)) Diego Mendoza Granada (Laboratoire de Physique Nucleaire et des Hautes Energies (LPNHE) - CNRS) Jiahui Zhuo (Univ. of Valencia and CSIC (ES)) Valerii Kholoimov (EPFL - Ecole Polytechnique Federale Lausanne (CH))

Presentation materials

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