E-resources
Peer reviewed
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AGNELLO, M; BEER, G; CERELLO, P; DALENA, B; DE MORI, F; D'ERASMO, G; DI SANTO, D; FABBRI, F. L; FASO, D; FELICIELLO, A; FILIPPI, A; FILIPPINI, V; BENUSSI, L; FIORE, E. M; FUJIOKA, H; GIANOTTI, P; GRION, N; LUCHERINI, V; MARCELLO, S; MARUTA, T; MIRFAKHRAI, N; MORRA, O; NAGAE, T; BERTANI, M; OLIN, A; OUTA, H; PACE, E; PALOMBA, M; PANTALEO, A; PANZARASA, A; PATICCHIO, V; PIANO, S; POMPILI, F; RUI, R; BIANCO, S; SIMONETTI, G; SO, H; TOMASSINI, S; TOYODA, A; WHEADON, R; ZENONI, A; BOTTA, E; BRESSANI, T; BUSSO, L; CALVO, D; CAMERINI, P
Physical review letters, 06/2005, Volume: 94, Issue: 21Journal Article
We have searched for a deeply bound kaonic state by using the FINUDA spectrometer installed at the e(+)e(-) collider DAPhiNE. Almost monochromatic K(-)'s produced through the decay of phi(1020) mesons are used to observe K(-) absorption reactions stopped on very thin nuclear targets. Taking this unique advantage, we have succeeded to detect a kaon-bound state K(-)pp through its two-body decay into a Lambda hyperon and a proton. The binding energy and the decay width are determined from the invariant-mass distribution as 115(+6)(-5)(stat)(+3)(-4)(syst) MeV and 67(+14)(-11)(stat)(+2)(-3)(syst) MeV, respectively.
