A new measurement of the cosmic ray antiproton absolute flux between 80 MeV and 14 GeV is presented. Data were collected by the satelliteborne experiment PAMELA, devoted to the study of the cosmic radiation with the focus on antiparticles. The apparatus, launched into orbit on-board the Resurs-DK1 satellite on 15 June 2006, consists of a central permanent magnetic spectrometer, an electromagnetic calorimeter, a time-of-flight system, a neutron detector and an anticoincidence shield. Thanks to its high identification capabilities and to the long duration of the mission, PAMELA is measuring cosmic ray antiprotons with unprecedented both statistical precision and explored energy range, thus placing stricter constraints to the existence of exotic processes and to propagation parameters of cosmological models.
A new measurement of the cosmic ray antiproton spectrum between 80 MeV and 14 GeV / Bruno, A.; Hofverberg, P.; Adriani, O.; Barbarino, G.C.; Bazilevskaya, G.A.; Bellottik, R.; Boezio, M.; Bogomolov, E.A.; Bonechi, L.; Bongi, M.; Bonvicini, V.; Bottai, S.; Cafagna, F.; Campana, D.; Carlson, P.; Casolino, M.; Castellini, G.; De Santis, C.; De Simone, N. De Pascale; De Rosa, G.; Di Felice, V.; Galper, A.M.; Grishantseva, L.; Koldashov, S.V.; Krutkov, S.Y.; Kvashnin, A.N.; Leonov, A.; Marcelli, L.; Menn, W.; Mikhailov, V.V.; Mocchiutti, E.; Nikonov, N.; Osteria, G.; Papini, P.; Peroni, M.; Pearce, M.; Picozza, P.; Ricci, M.; Ricciarini, S.B.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y.I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G.; Voronov, S.A.; Yurkin, Y.T.; Zampa, G.; Zampa, N.; Zverev, V.G.. - ELETTRONICO. - (2009), pp. 1-4. (Intervento presentato al convegno 31st International Cosmic Ray Conference, ICRC 2009).
A new measurement of the cosmic ray antiproton spectrum between 80 MeV and 14 GeV
ADRIANI, OSCAR;BONGI, MASSIMO;
2009
Abstract
A new measurement of the cosmic ray antiproton absolute flux between 80 MeV and 14 GeV is presented. Data were collected by the satelliteborne experiment PAMELA, devoted to the study of the cosmic radiation with the focus on antiparticles. The apparatus, launched into orbit on-board the Resurs-DK1 satellite on 15 June 2006, consists of a central permanent magnetic spectrometer, an electromagnetic calorimeter, a time-of-flight system, a neutron detector and an anticoincidence shield. Thanks to its high identification capabilities and to the long duration of the mission, PAMELA is measuring cosmic ray antiprotons with unprecedented both statistical precision and explored energy range, thus placing stricter constraints to the existence of exotic processes and to propagation parameters of cosmological models.
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