Details

Autor(en) / Beteiligte

• Kleimenova, A.
• Petrov, Y.
• Velghe, B.
• Aliberti, R.
• Lomidze, D.
• Peruzzo, L.
• Wanke, R.
• Neri, I.
• Petrucci, F.
• Wahl, H.
• Cotta Ramusino, A.
• Gianoli, A.
• Latino, G.
• Bizzeti, A.
• Kozhuharov, V.
• Lanfranchi, G.
• Martellotti, S.
• Spadaro, T.
• Ambrosino, F.
• Corvino, M.
• Mirra, M.
• Saracino, G.
• Brizioli, F.
• Imbergamo, E.
• Lollini, R.
• Piandani, R.
• Checcucci, B.
• Lupi, M.
• Pepe, M.
• Piccini, M.
• Costantini, F.
• Giorgi, M.
• Lamanna, G.
• Sozzi, M.
• Mannelli, I.
• D'Agostini, G.
• Biagioni, A.
• Leonardi, E.
• Valente, P.
• Vicini, P.
• Ammendola, R.
• Salamon, A.
• Sargeni, F.
• Bloch-Devaux, B.
• Boretto, M.
• Menichetti, E.
• Engelfried, J.
• Estrada-Tristan, N.
• Ghinescu, S.A.
• Baeva, A.
• Emelyanov, D.
• Falaleev, V.
• Kekelidze, V.
• Litov, L.
• Misheva, M.
• Molokanova, N.
• Potrebenikov, Yu
• Shkarovskiy, S.
• Zinchenko, A.
• Fedotov, S.
• Kudenko, Y.
• Medvedeva, M.
• Kholodenko, S.
• Obraztsov, V.
• Ostankov, A.
• Semenov, V.
• Yushchenko, O.
• Cerny, V.
• Ceccucci, A.
• De Simone, N.
• Döbrich, B.
• Federici, L.
• Gamberini, E.
• Guida, R.
• Jenninger, B.
• Koval, M.
• Mapelli, A.
• Marchevski, R.
• Noy, M.
• Palladino, V.
• Perrin-Terrin, M.
• Pinzino, J.
• Schuchmann, S.
• Brunetti, M.B.
• Duk, V.
• Goudzovski, E.
• Newson, F.
• Romano, A.
• Sergi, A.
• Sturgess, A.
• Heath, H.
• Trilov, S.
• Carmignani, J.
• Dainton, J.B.
• Ruggiero, G.
• Maurice, E.
• Wrona, B.
• Cooper, P.
• Coward, D.
• Rubin, P.

Titel

Search for K+ decays to a muon and invisible particles

Ist Teil von

• Physics letters. B, 2021-05, Vol.816, p.136259, Article 136259

Ort / Verlag

United States: Elsevier B.V

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The NA62 experiment at CERN reports searches for K+→μ+N and K+→μ+νX decays, where N and X are massive invisible particles, using the 2016–2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits of O(10−8) of the neutrino mixing parameter |Uμ4|2 for N masses in the range 200–384 MeV/c2 and lifetime exceeding 50 ns. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10–370 MeV/c2 are reported for the first time, ranging from O(10−5) to O(10−7). An improved upper limit of 1.0×10−6 is established at 90% CL on the K+→μ+ννν¯ branching fraction.