Details

Autor(en) / Beteiligte

• Batley, J. R.
• Kalmus, G.
• Lazzeroni, C.
• Slater, M. W.
• Wotton, S. A.
• Bocquet, G.
• Cabibbo, N.
• Ceccucci, A.
• Cundy, D.
• Falaleev, V.
• Fidecaro, M.
• Gatignon, L.
• Patel, M.
• Peters, A.
• Swallow, E.
• Winston, R.
• Rubin, P.
• Walker, A.
• Dalpiaz, P.
• Damiani, C.
• Fiorini, M.
• Martini, M.
• Scarpa, M.
• Wahl, H.
• Baldini, W.
• Cotta Ramusino, A.
• Gianoli, A.
• Calvetti, M.
• Celeghini, E.
• Iacopini, E.
• Lenti, M.
• Ruggiero, G.
• Bizzeti, A.
• Veltri, M.
• Behler, M.
• Eppard, K.
• Hita-Hochgesand, M.
• Kleinknecht, K.
• Marouelli, P.
• Masetti, L.
• Morales Morales, C.
• Wanke, R.
• Winhart, A.
• Dabrowski, A.
• Fonseca Martin, T.
• Shieh, M.
• Szleper, M.
• Velasco, M.
• Wood, M. D.
• Anzivino, G.
• Imbergamo, E.
• Nappi, A.
• Piccini, M.
• Raggi, M.
• Valdata-Nappi, M.
• Cenci, P.
• Pepe, M.
• Petrucci, M. C.
• Costantini, F.
• Doble, N.
• Fiorini, L.
• Giudici, S.
• Sozzi, M.
• Venditti, S.
• Lamanna, G.
• Mannelli, I.
• Michetti, A.
• Fantechi, R.
• Bloch-Devaux, B.
• Cheshkov, C.
• Chèze, J. B.
• Derré, J.
• Marel, G.
• Mazzucato, E.
• Peyaud, B.
• Vallage, B.
• Holder, M.
• Ziolkowski, M.
• Bifani, S.
• Clemencic, M.
• Goy Lopez, S.
• Biino, C.
• Cartiglia, N.
• Marchetto, F.
• Jeitler, M.
• Markytan, M.
• Neuhofer, G.
• Widhalm, L.
• Balev, S.
• Frabetti, P. L.
• Gersabeck, E.
• Goudzovski, E.
• Kekelidze, V.
• Korotkova, A.
• Kozhuharov, V.
• Madigozhin, D.
• Molokanova, N.
• Polenkevich, I.
• Potrebenikov, Yu
• Stoynev, S.

Titel

First observation and study of the K±→ π0π0μ±ν decay

Ist Teil von

• The journal of high energy physics, 2024-03, Vol.2024 (3), p.137, Article 137

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2024

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• A bstract The NA48/2 experiment at CERN reports the first observation of the K ± → π 0 π 0 μ ± ν decay based on a sample of 2437 candidates with 15% background contamination collected in 2003–2004. The decay branching ratio in the kinematic region of the squared dilepton mass above 0.03 GeV 2 / c 4 is measured to be (0.65 ± 0.03) × 10 − 6 . The extrapolation to the full kinematic space, using a specific model, is found to be (3.45 ± 0.16) × 10 − 6 , in agreement with chiral perturbation theory predictions.