K- absorption in nuclei by two and three nucleons

Details K- absorption in nuclei by two and three nucleons K- absorption in nuclei by two and three nucleons

2009-01-08

arxiv.org/abs/0901.1086v1

Hyperfine Interact.193:209-214,2009

Physics

Nuclear Physics

Nuclear Theory

6 pages, 5 figures. Talk presented at the International Conference on Exotic Atoms "EXA 2008", Vienna, Austria, September 15-1

Scientific paper

10.1007/s10751-009-0002-0

It will be shown that the peaks in the (Lambda p) and (Lambda d) invariant mass distributions, observed in recent FINUDA experiments and claimed to be signals of deeply bound kaonic states, are naturally explained in terms of K- absorption by two or three nucleons leaving the rest of the original nuclei as spectator. For reactions on heavy nuclei, the subsequent interactions of the particles produced in the primary absorption process with the residual nucleus play an important role. Our analyses leads to the conclusion that at present there is no experimental evidence of deeply bound K- state in nuclei. Although the FINUDA experiments have been done for reasons which are not supported a posteriori, some new physics can be extracted from the data.

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