{"paper":{"title":"The discovery of geomagnetically trapped cosmic ray antiprotons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"astro-ph.HE","authors_text":"A. Bruno, A. G. Mayorov, A. Leonov, A. M. Galper, A. Monaco, A. N. Kvashnin, A. Vacchi, A. V. Karelin, C. De Santis, C. Pizzolotto, D. Campana, E. A. Bogomolov, E. Mocchiutti, E. Vannuccini, F. Cafagna, F. Palma, G. A. Bazilevskaya, G. Castellini, G. C. Barbarino, G. Jerse, G. Osteria, G. Vasilyev, G. Zampa, J. Wu, L. Consiglio, L. Grishantseva, L. Marcelli, L. Rossetto, M. Boezio, M. Bongi, M. Casolino, M. D. Kheymits, M. P. De Pascale, M. Pearce, M. Ricci, M. Simon, N. De Simone, N. Mori, N. Nikonov, N. Zampa, O. Adriani, P. Carlson, P. Papini, P. Picozza, P. Spillantini, R. Bellotti, R. Carbone, R. Sarkar, R. Sparvoli, S. A. Voronov, S. Borisov, S. Bottai, S. B. Ricciarini, S. V. Koldashov, S. Y. Krutkov, V. Bonvicini, V. Di Felice, V. G. Zverev, V. Malakhov, V. V. Mikhailov, W. Gillard, W. Menn, Y. I. Stozhkov, Y. T. Yurkin","submitted_at":"2011-07-25T10:11:57Z","abstract_excerpt":"The existence of a significant flux of antiprotons confined to Earth's magnetosphere has been considered in several theoretical works. These antiparticles are produced in nuclear interactions of energetic cosmic rays with the terrestrial atmosphere and accumulate in the geomagnetic field at altitudes of several hundred kilometers. A contribution from the decay of albedo antineutrons has been hypothesized in analogy to proton production by neutron decay, which constitutes the main source of trapped protons at energies above some tens of MeV. This Letter reports the discovery of an antiproton ra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4882","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}