25-29 January 2016
Bormio, Italy
Europe/Berlin timezone

K- multi-nucleon absorption processes in hadronic interaction studies by AMADEUS

25 Jan 2016, 17:27
3m
Bormio, Italy

Bormio, Italy

Poster Hadron Physics Monday Afternoon

Speaker

Raffaele Del Grande (INFN-LNF)

Description

The recent hyperon-nucleon/nuclei correlation studies performed by the AMADEUS collaboration might reveal unprecedent informations on the K- low-energy interaction with light nuclei thanks to the unique kaon beam provided by the DAFNE collider and the excellent features of the KLOE detector. The Lp and the S0p final states, produced in the K- absorption processes on 12C and 4He, were analyzed. The excellent acceptance and resolution (for both charged particles and photons) enabled to provide informations for a wide range of the allowed kinematic regions, and to disentangle single from multi-nucleon K- absorption processes. A yield of K-pp/K-stop = (0.044 ± 0.009 stat +0.004-0.005 syst) 10-2 was extracted for a ppK- bound state, decaying in S0p, characterized by a binding energy and a width of 45 and 30 MeV/c2 respectively. A statistical analysis was performed revealing that the bound state is only significant at the level of 1s.

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