Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 114: Standard model 4 (strong/QCD)
T 114.6: Talk
Friday, March 8, 2024, 10:15–10:30, Geb. 30.23: 2/0
Early measurement of strange-hadron production ratios at LHCb in Run 3 — Johannes Albrecht1, •Noah Behling1, Lukas Calefice2, Hans Dembinski1, and Biljana Mitreska1 — 1TU Dortmund University, Dortmund, Germany — 2Universitat de Barcelona, Barcelona, Spain
Hadron production ratios are a useful probe to test and improve hadronisation models. In this work, the production ratios of KS0, Λ0, and Λ0 are studied with the upgraded LHCb experiment using early data recorded in 2022. These studies are also essential to calibrate and validate the performance of the upgraded detector. The proper operation of all subsystems needs to be validated step-by-step to carry on precise measurements with data recorded recently and in the future. The performance of the tracking system can be validated with the measured ratios.
The meson-to-baryon ratios and strangeness production in general contribute to the understanding of hadronic processes in cosmic-ray-induced extensive air showers, which are dominated by soft-QCD effects in the forward region. In air-shower data, an excess of muons produced with respect to Monte Carlo event generators has been observed, which could originate from mismodelling of the hadronisation process. The LHCb experiment offers a unique environment to test hadronic models in the forward region.
The current status of the analysis pipeline and recent studies on detector performance will be presented. Additionally, a bridge between collider and air-shower experiments will be built.
Keywords: Soft-QCD; Air showers; V0; LHCb Upgrade I; Muon Puzzle