| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01161 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/epjconf/202533701161 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701161
BuSca: A Buffer Scanner at HLT1 to detect LLPs beyond the SM at LHCb
1 Instituto de Física Corpuscular (IFIC), University of Valencia-CSIC, Valencia, Spain
2 Rutherford Appleton Laboratory (RAL), Oxford, United Kingdom
a valerii.kholoimov@cern.ch
b brij.kishor.jashal@cern.ch
c Arantza.Oyanguren@ific.uv.es
d volodymyr.svintozelskyi@cern.ch
e Jiahui.Zhuo@ific.uv.es
Published online: 7 October 2025
BuSca is a LHCb project prototype designed for long-lived parti cle searches in real-time, leveraging the enhanced parallelization capabilities of the new LHCb trigger scheme implemented on GPUs. BuSca algorithms are focused at present on downstream reconstructed tracks, which exclusively let hits in the UT and SciFi detectors. By projecting physics candidates onto 2D histograms of flight distance and mass hypotheses at 30 MHz rate, BuSca identifies hot spots indicative of potential candidates of new particles, thereby providing strategic guidance for the development of new trigger lines. Additionally, BuSca offers an Armenteros-Podolanski representation, providing insights into the mass hypotheses of the decay products associated with the new particle. The performance of BuSca, including the outcomes of its initial prototype on simulated and real data, will be elucidated in this manuscript.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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