Antiproton Flux, Antiproton-to-Proton Flux Ratio, and Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station

A precision measurement by AMS of the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV is presented based on 3.49×105 antiproton events and 2.42×109 proton events. The fluxes and flux ratios of charged elementary particles...

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Detalles Bibliográficos
Autores principales: Aguilar, M, Ali Cavasonza, L, Alpat, B, Ambrosi, G, Arruda, L, Attig, N, Aupetit, S, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeǧmez-du Pree, S, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Boschini, M  J, Bourquin, M, Bueno, E  F, Burger, J, Cadoux, F, Cai, X  D, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cernuda, I, Cervelli, F, Chae, M  J, Chang, Y  H, Chen, A  I, Chen, G  M, Chen, H  S, Cheng, L, Chou, H  Y, Choumilov, E, Choutko, V, Chung, C  H, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y  M, Delgado, C, Della Torre, S, Demirköz, M  B, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, D'Urso, D, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García-López, R  J, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gómez-Coral, D  M, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guerri, I, Guo, K  H, Habiby, M, Haino, S, Han, K  C, He, Z  H, Heil, M, Hoffman, J, Hsieh, T  H, Huang, H, Huang, Z  C, Huh, C, Incagli, M, Ionica, M, Jang, W  Y, Jinchi, H, Kang, S  C, Kanishev, K, Kim, G  N, Kim, K  S, Kirn, Th, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M  S, La Vacca, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H  T, Lee, S  C, Leluc, C, Li, H  S, Li, J  Q, Li, Q, Li, T  X, Li, W, Li, Z  H, Li, Z  Y, Lim, S, Lin, C  H, Lipari, P, Lippert, T, Liu, D, Liu, Hu, Lu, S  Q, Lu, Y  S, Luebelsmeyer, K, Luo, F, Luo, J  Z, Lv, S  S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca-Rocha, A, Meng, Q, Mo, D  C, Morescalchi, L, Mott, P, Nelson, T, Ni, J  Q, Nikonov, N, Nozzoli, F, Nunes, P, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Pauluzzi, M, Pensotti, S, Pereira, R, Picot-Clemente, N, Pilo, F, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X  M, Qin, X, Qu, Z  Y, Räihä, T, Rancoita, P  G, Rapin, D, Ricol, J  S, Rodríguez, I, Rosier-Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S  M, Schulz von Dratzig, A, Schwering, G, Seo, E  S, Shan, B  S, Shi, J  Y, Siedenburg, T, Son, D, Song, J  W, Sun, W  H, Tacconi, M, Tang, X  W, Tang, Z  C, Tao, L, Tescaro, D, Ting, Samuel C  C, Ting, S  M, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J  P, Vitale, V, Vitillo, S, Wang, L  Q, Wang, N  H, Wang, Q  L, Wang, X, Wang, X  Q, Wang, Z  X, Wei, C  C, Weng, Z  L, Whitman, K, Wienkenhöver, J, Willenbrock, M, Wu, H, Wu, X, Xia, X, Xiong, R  Q, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Yi, H, Yu, Y  J, Yu, Z  Q, Zeissler, S, Zhang, C, Zhang, J, Zhang, J  H, Zhang, S  D, Zhang, S  W, Zhang, Z, Zheng, Z  M, Zhu, Z  Q, Zhuang, H  L, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P
Lenguaje:eng
Publicado: 2016
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.117.091103
http://cds.cern.ch/record/2261344
Descripción
Sumario:A precision measurement by AMS of the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV is presented based on 3.49×105 antiproton events and 2.42×109 proton events. The fluxes and flux ratios of charged elementary particles in cosmic rays are also presented. In the absolute rigidity range ∼60 to ∼500  GV, the antiproton p¯, proton p, and positron e+ fluxes are found to have nearly identical rigidity dependence and the electron e− flux exhibits a different rigidity dependence. Below 60 GV, the (p¯/p), (p¯/e+), and (p/e+) flux ratios each reaches a maximum. From ∼60 to ∼500  GV, the (p¯/p), (p¯/e+), and (p/e+) flux ratios show no rigidity dependence. These are new observations of the properties of elementary particles in the cosmos.

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