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Luminosity measurement with the LHCb RICH detectors in Run 3

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arxiv 2503.05273 v2 pith:MPWIV2TE submitted 2025-03-07 hep-ex

Luminosity measurement with the LHCb RICH detectors in Run 3

Paula Alvarez Cartelle , Alessia Anelli , Anna Balboni , Anja Beck , Federico Betti , Josh Bex , Federica Borgato , Roberto Calabrese
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Marta Calvi Roberta Cardinale Giovanni Cavallero Lucian-Nicolae Cojocariu Daniel Craik Elena Dall'Occo Carmelo D'Ambrosio Viacheslav Duk Lisa Fantini Fabio Ferrari Massimiliano Fiorini Edoardo Franzoso Christoph Frei Silvia Gambetta Simon Ghizzo Zahra Ghorbanimoghaddam Claudio Gotti Thierry Gys Christopher Robert Jones Izabela Juszczak Michael Kane Floris Keizer Marcin Kucharczyk Thomas Long Florin Maciuc Lorenzo Malentacca Gabriele Martelli Andrea Mauri Michael McCann Franz Muheim Elisabeth Maria Niel Shinichi Okamura Federica Oliva Antonis Papanestis Mitesh Patel Jairus Tristan Patoc Mauro Piccini Vlad-Mihai Placinta Jonas Rademacker Jake Reich Gabriele Romolini Antonino Sergi Gabriele Simi Mark Smith Francesca Swystun Hanae Tilquin Constantinos Vrahas Guy Wilkinson Richard Williams Mariusz Witek Stephen Wotton Shu Xian Youhua Yang
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The LHCb Ring-Imaging Cherenkov detectors are built to provide charged hadron identification over a large range of momentum. The upgraded detectors are also capable of providing an independent measurement of the luminosity for the LHCb experiment during LHC Run 3. The modelling of the opto-electronics chain, the application of the powering strategy during operations, the calibration procedures and the proof of principle of a novel technique for luminosity determination are presented. In addition, the preliminary precision achieved during the 2023 data-taking year for real-time and offline luminosity measurements is reported.

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