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Título

Particle identification algorithms for the HARP forward spectrometer

Autor Catanesi, M. G.; Cervera Villanueva, Anselmo ; Novella, Pau ; Burguet Castell, Jordi; Gómez Cadenas, Juan José ; Sorel, Michel ; Tornero, Ana María ; Arce, Pedro
Palabras clave Chorus Experiment
Construction
Calorimeter
Performance
Pions
Particle identification
Threshold Cherenkov
Time of flight
Hadron production
Fecha de publicación 3-ene-2007
EditorElsevier
Citación Nuclear Instruments & Methods in Physics Research Section A - Accelerators, Spectrometers, Detectors and Associated Equipment 572(2): 899-921 (2007)
ResumenThe particle identification (PID) methods used for the calculation of secondary pion yields with the HARP forward spectrometer are presented. Information from time of flight and Cherenkov detectors is combined using likelihood techniques. The efficiencies and purities associated with the different PID selection criteria are obtained from the data. For the proton-aluminium interactions at 12.9 GeV/c incident momentum, the PID efficiencies for positive pions are 86% in the momentum range below 2 GeV/c, 92% between 2 and 3 GeV/c and 98% in the momentum range above 3 GeV/c. The purity of the selection is better than 92% for all momenta. Special emphasis has been put on understanding the main error sources. The final PID uncertainty on the pion yield is 3.3%.
Descripción 23 páginas, 26 figuras, 5 tablas.-- PACS nrs.: 95.55.Vj; 28.85.+c; 07.75.+h; 07.05.Kf; 14.40.Aq.-- et al.
Versión del editorhttp://dx.doi.org/10.1016/j.nima.2006.11.071
URI http://hdl.handle.net/10261/9056
DOI10.1016/j.nima.2006.11.071
ISSN0168-9002
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