Pattern recognition and PID for COMPASS RICH-1
P. Abbon, M. Alexeev, H. Angerer, R. Birsa, P. Bordalo, F. Bradamante,, A. Bressan, M. Chiosso, P. Ciliberti, M. L. Colantoni, T. Dafni, S. Dalla, Torre, E. Delagnes, O. Denisov, H. Deschamps, V. Diaz, N. Dibiase, V. Duic,, W. Eyrich, A. Ferrero, M. Finger, M. Finger Jr

TL;DR
This paper presents a pattern recognition and particle identification package for the COMPASS RICH-1 detector, enabling detailed detector characterization and physics analysis across multiple data collection periods.
Contribution
The paper introduces a new software package for pattern recognition and PID tailored to the COMPASS RICH-1 detector, including algorithms and results from detector characterization.
Findings
Successful detector characterization in both original and upgraded configurations
Effective particle identification achieved for physics analyses
Package structure and algorithms detailed for reproducibility
Abstract
A package for pattern recognition and PID by COMPASS RICH-1 has been developed and used for the analysis of COMPASS data collected in the years 2002 to 2004, and 2006-2007 with the upgraded RICH-1 photon detectors. It has allowed the full characterization of the detector in the starting version and in the upgraded one, as well as the PID for physics results. We report about the package structure and algorithms, and the detector characterization and PID results.
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