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  • Tetra-Neutron Experiment: Understanding of Nuclear Forces Might Have To Be Significantly Changed

    12/12/2021 8:57:01 PM PST · by BenLurkin · 14 replies
    scitechdaily ^ | DECEMBER 12, 2021 | TECHNICAL UNIVERSITY OF MUNICH (TUM)
    While all atomic nuclei except hydrogen are composed of protons and neutrons, physicists have been searching for a particle consisting of two, three, or four neutrons for over half a century. Experiments by a team of physicists of the Technical University of Munich (TUM) at the accelerator laboratory...now indicate that a particle comprising four bound neutrons may well exist. Should such particle exist, parts of the theory of the strong interaction would need to be rethought. In 2016, a group in Japan attempted to produce tetra-neutrons from helium-4 by bombarding it with a beam of radioactive helium-8 particles. This reaction...