Details

Autor(en) / Beteiligte

• 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

Titel

Evidence for a kaon-bound state K- pp produced in K-absorption reactions at rest

Ist Teil von

• Physical review letters, 2005-06, Vol.94 (21), p.212303.1-212303.4

Ort / Verlag

Ridge, NY: American Physical Society

Erscheinungsjahr

2005

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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.