abstract

• The NA62 experiment aims to measure the BR(K →π νν̄) with a 10%25 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 νν̄ 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%25, with a muon suppression factor of about 500, in the momentum range 15–35 GeV/c. © 2019
• The NA62 experiment aims to measure the BR(K%2b→π%2bνν̄) with a 10%25 precision. One of the main backgrounds comes from the decay K%2b→μ%2bν, 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%2b→π%2bνν̄ 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%25, with a muon suppression factor of about 500, in the momentum range 15–35 GeV/c. © 2019

authors

• Aisa D.
• Anzivino G.
• Barbanera M.
• Bizzarri M.
• Bizzeti A.
• Brizioli F.
• Bucci F.
• Campeggi C.
• Carassiti V.
• Cassese A.
• Cenci P.
• Ciaranfi R.
• Duk V.
• Engelfried Jatzkowski Jurgen
• Estrada-Tristan N.
• Iacopini E.
• Imbergamo E.
• Latino G.
• Lenti M.
• Lollini R.
• Maletta F.
• Papi A.
• Pepe M.
• Piandani R.
• Piccini M.
• Piluso A.
• Scolieri G.
• Volpe R.

publication date

• 2020-01-01

funding provided via

• 30820817  Grant
• Consejo Nacional de Ciencia y Tecnología, CONACYT  Grant
• Universidad Autónoma de San Luis Potosí, UASLP  Grant

published in

• Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment  Journal

keywords

• Cherenkov detectors; Particle identification; Rare Kaon decays Nuclear instrumentation; Nuclear physics; Cherenkov Detectors; Momentum range; Particle identifications; Rare kaon decay; Hadrons

Digital Object Identifier (DOI)

• 10.1016/j.nima.2019.01.029

start page

end page

volume

• 952