abstract

• The decay K%2b → π%2bνν̄, with a very precisely predicted branching ratio of less than 10-10, is one of the best candidates to reveal indirect effects of new physics at the highest mass scales. The NA62 experiment at the CERN SPS is designed to measure the branching ratio of the K%2b → π%2bνν̄ with a decay-in-flight technique. NA62 took data so far in 2016-2018. Statistics collected in 2016 allowed NA62 to reach the Standard Model sensitivity for K%2b → π%2bνν̄, entering the domain of 10-10 single event sensitivity and showing the proof of principle of the experiment. Thanks to the statistics collected in 2017, NA62 surpasses the present best sensitivity. The analysis strategy is reviewed and the preliminary result from the 2017 data set is presented. A large sample of charged kaon decays into final states with multiple charged particles was collected in 2016-2018. The sensitivity to a range of lepton flavor and lepton number violating kaon decays provided by this data set improves over the previously reported measurements. Results from the searches for these processes with a partial NA62 data sample are presented. © 2019 SLAC National Accelerator Laboratory. All rights reserved.

authors

• Aliberti R.
• Ambrosino F.
• Ammendola R.
• Angelucci B.
• Antonelli A.
• Anzivino G.
• Arcidiacono R.
• Bache T.
• Barbanera M.
• Bernhard J.
• Biagioni A.
• Bician L.
• Biino C.
• Bizzeti A.
• Blazek T.
• Bloch-Devaux B.
• Bonaiuto V.
• Boretto M.
• Bragadireanu M.
• Britton D.
• Brizioli F.
• Brunetti M.B.
• Bryman D.
• Bucci F.
• Capussela T.
• Carmignani J.
• Ceccucci A.
• Cenci P.
• Cerny V.
• Cerri C.
• Checcucci B.
• Conovaloff A.
• Cooper P.
• Cortina Gil E.
• Corvino M.
• Costantini F.
• Cotta Ramusino A.
• Coward D.
• Dagostini G.
• Dainton J.
• Dalpiaz P.
• Danielsson H.
• De Simone N.
• Di Filippo D.
• Di Lella L.
• Doble N.
• Duk V.
• Duval F.
• Döbrich B.
• Engelfried Jatzkowski Jurgen
• Enik T.
• Estrada-Tristan N.
• Falaleev V.
• Fantechi R.
• Fascianelli V.
• Federici L.
• Fedotov S.
• Filippi A.
• Fiorini M.
• Fry J.
• Fu J.
• Fucci A.
• Fulton L.
• Gamberini E.
• Gatignon L.
• Georgiev G.
• Ghinescu S.
• Gianoli A.
• Giorgi M.
• Giudici S.
• Gonnella F.
• Goudzovski E.
• Graham C.
• Guida R.
• Gushchin E.
• Hahn F.
• Heath H.
• Holzer E.B.
• Husek T.
• Hutanu O.E.
• Hutchcroft D.
• Iacobuzio L.
• Iacopini E.
• Imbergamo E.
• Jenninger B.
• Jerhot J.
• Jones R.W.L.
• Kampf K.
• Kekelidze V.
• Kholodenko S.
• Khoriauli G.
• Khotyantsev A.
• Kleimenova A.
• Korotkova A.
• Koval M.
• Kozhuharov V.
• Kucerova Z.
• Kudenko Y.
• Kunze J.
• Kurochka V.
• Kurshetsov V.F.
• Lamanna G.
• Lanfranchi G.
• Lari E.
• Latino G.
• Laycock P.
• Lazzeroni C.
• Lehmann-Miotto G.
• Lenti M.
• Leonardi E.
• Lichard P.
• Litov L.
• Lollini R.
• Lomidze D.
• Lonardo A.
• Lubrano P.
• Lupi M.
• Lurkin N.
• Madigozhin D.
• Mannelli I.
• Mannocchi G.
• Mapelli A.
• Marchetto F.
• Marchevski R.
• Martellotti S.
• Massarotti P.
• Massri K.
• Maurice E.
• Medvedeva M.
• Mefodev A.
• Menichetti E.
• Migliore E.
• Minucci E.
• Mirra M.
• Misheva M.
• Molokanova N.
• Moulson M.
• Movchan S.
• Napolitano M.
• Neri I.
• Newson F.
• Norton A.
• Noy M.
• Numao T.
• Obraztsov V.
• Ostankov A.
• Padolski S.
• Page R.
• Palladino V.
• Parenti A.
• Parkinson C.
• Pedreschi E.
• Pepe M.
• Perrin-Terrin M.
• Peruzzo L.
• Petrov P.
• Petrov Y.
• Petrucci F.
• Piandani R.
• Piccini M.
• Pinzino J.
• Polenkevich I.
• Pontisso L.
• Potrebenikov Y.
• Protopopescu D.
• Raggi M.
• Romano A.
• Rubin P.
• Ruggiero G.
• Ryjov V.
• Salamon A.
• Santoni C.
• Saracino G.
• Sargeni F.
• Schuchmann S.
• Semenov V.
• Sergi A.
• Shaikhiev A.
• Shkarovskiy S.
• Soldi D.
• Sozzi M.
• Spadaro T.
• Spinella F.
• Sturgess A.
• Sugonyaev V.
• Swallow J.
• Trilov S.
• Valente P.
• Velghe B.
• Venditti S.
• Vicini P.
• Volpe R.
• Vormstein M.
• Wahl H.
• Wanke R.
• Wrona B.
• Yushchenko O.
• Zamkovsky M.
• Zinchenko A.

publication date

• 2019-01-01

funding provided via

• 30820817  Grant

published in

• Proceedings of the 2019 Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2019  Proceedings

keywords

• Charged particles; Hadrons; Analysis strategies; Branching ratio; Indirect effects; Lepton number; Lepton-flavor; Proof of principles; Single event; The standard model; Bosons

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