The role of the NA62 RICH in the BR(K+→π+νν̄) measurement
| Autor: | F. Brizioli, N. Estrada-Tristan, F. Bucci, Andrea Bizzeti, A. Piluso, G. Anzivino, Antonio Cassese, Mauro Piccini, E. Iacopini, Jürgen Engelfried, Mattia Barbanera, A. Papi, M. Bizzarri, E. Imbergamo, F. Maletta, Roberto Ciaranfi, V. Carassiti, Roberto Piandani, R. Lollini, G. Scolieri, Viacheslav Duk, C. Campeggi, M. Pepe, Giuseppe Latino, M. Lenti, D. Aisa, R. Volpe, P. Cenci |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Range (particle radiation) Muon 010308 nuclear & particles physics NA62 experiment 01 natural sciences Measure (mathematics) Particle identification 030218 nuclear medicine & medical imaging Calorimeter Momentum 03 medical and health sciences 0302 clinical medicine Pion 0103 physical sciences Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 952:161802 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2019.01.029 |
| Popis: | The NA62 experiment aims to measure the B R ( K + → π + ν ν ) with a 10% precision. One of the main backgrounds comes from the decay K + → μ + ν , therefore a highly powerful pion/muon separation is needed. The NA62 RICH, together with the calorimeter system, provides an accurate particle identification which has been essential to obtain the first results of the NA62 K + → π + ν ν analysis, based on 2016 data. Two different algorithms have been exploited which, used in combination, allowed to get a pion reconstruction and identification efficiency of 75%, with a muon suppression factor of about 500, in the momentum range 15–35 GeV/c. |
| Databáze: | OpenAIRE |
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