PRODUCTION AND IDENTIFICATION OF THE SUPERHEAVY HYDROGEN HYPERNUCLEUS ~H 1 2 1 1 1 3 3 L. Majling • t, Yu. Batusov , J. Lukstins , A. Parfenov , M. Solar and B. Sopko (1) Joint Institute for Nuclear Research, Dubna, Russia (2) Nuclear Physics Institute, GAS, Rei, Czech Republic (3) Czech Technical University, Prague, Czech Republic t E-mail:
[email protected] Abstract The hypernucleus ~H, existence of which has been suggested recently, could be identified unambiguously in experiments with light relativistic hypernuclei prepared for Nuclotron. Key-words: relativistic hypernuclei, exotic nuclei 1. Introduction. Nuclei with a Neutron Halo In the last twenty years a new branch of nuclear physics, namely physics of nuclei in the vicinity of the neutron drip line has been constituted [l]. The dripline is the limit of the nuclear landscape, where additional neutrons can no longer be kept in the nucleus. This dripline has been really reached for light nuclei (Z :::; 6), see Fig. 1. One can see irregularities at the border of neutron stability. There is considerable interest in unbound nuclear systems close to the driplines, both in themselves and as subsystem of Borromean halo nuclei. The term Borromean was coined in ref. [2] to denote a bound three-body system (core + n + n) for which no binary subsystem is bound. In Fig. 1, the /3-stable isotopes are marked by ( E9) and the type of neutron halo is also given. The short range of the nuclear force and the low separation energy of the valence nucleons results, in some cases, in considerable tunneling into the classical forbidden region and more or less pronounced halo may be formed.