Sgaramella, F; Sirghi, D; Abbene, L; Artibani, F; Bazzi, M; Bosnar, Damir; Bragadireanu, M; Buttacavoli, A; Cargnelli, M; Carminati, M; Clozza, A; Clozza, F; Deda, G; Del Grande, R; De Paolis, L; Dulski, K; Fabbietti, L; Fiorini, C; Friščić, Ivica Guaraldo; Iliescu, M; Iwasaki, M; Khreptak, A; Manti, S; Marton, J; Miliucci, M; Moskal, P; Napolitano, F; Niedźwiecki, S; Ohnishi, H; Piscicchia, K; Principato, F; Scordo, A; Silarski, M; Sirghi, F; Skurzok, M; Spallone, A; Toho, K; Tüchler, M; Vazquez Doce, O; Yoshida, C; Zmeskal, J; Curceanu, C: First measurement of kaonic helium-4 M-series transitions