Search for a bound K− pp system
Dipartimento di Fisica, Universitá di Trieste and INFN, Sezione
di Trieste via Valerio 2, 34127, Trieste, Italy
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Data from the K− absorption reaction on 6,7Li, 9Be, 13C and 16O have recently been collected by FINUDA at the DAΦNE φ-factory (Laboratori Nazionali di Frascati-INFN), following an earlier lower statitics run on 12C and some other targets. FINUDA is a high acceptance magnetic spectrometer which performed a wide range of studies by detecting the charged particles and neutrons exiting the targets after the absorption event. In this paper it is discussed about the study of the A(K− , Λp) reaction in the context of the search for deeply bound - nuclear states. The observation of a bump in the Λp invariant mass distribution is discussed in terms of a possible signature of a deeply bound K− pp kaonic cluster as well as of more conventional physics. An overview of the experimental situation in this ﬁeld will be given.
© Owned by the authors, published by EDP Sciences, 2010