Details

Autor(en) / Beteiligte

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

Titel

The role of the NA62 RICH in the BR(K+→π+νν̄) measurement

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2020-02, Vol.952, Article 161802

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The NA62 experiment aims to measure the BR(K+→π+νν̄) 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+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%, with a muon suppression factor of about 500, in the momentum range 15–35 GeV/c.