Nuclear Theory2026-01-101 minarXiv:2601.06541expressAntiproton in the Nuclear HaloThe antiproton is a mirror twin of the proton: same mass, but negative charge. When it approaches an atomic nucleus, the particles can annihilate, turning into radiation.Pierre-Yves Duerinck·Rimantas LazauskasAlan GuthAlbert EinsteinDavid Bohmantimatter👍👎☆SimplePopularAdvanced