Pion muon identification in the ALEPH detector using the discriminant analysis |
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| Affiliation: | 1. Department of Chemistry, Gandhi Faiz-e-Aam College (Affiliated to M. J. P. Rohilkhand University), Shahjahanpur, Uttar Pradesh, India;2. Department of Chemistry, Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahn, Sarawak, Malaysia;3. Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India;1. Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland;2. Samara National Research University, 443086 Samara, Russia;3. IPSI RAS-Branch of the FSRC “Crystallography and Photonics” RAS, 443001 Samara, Russia |
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| Abstract: | This paper illustrates the application of Discriminant Analysis to the separation between π's and μ's through the energy measurement and tracking capability of a hadron calorimeter followed by a system of chambers. For data taken in a test run with π and μ beams of 5–10–20 GeV, Discriminant Analysis provides an identification level of about 99.5%, very close to the physical limit corresponding to sail-through pions. The extension of the method to the case of the whole ALEPH detector and Z0 events is also discussed, with the aid of a Monte Carlo program. |
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