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First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-350 GeV
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Date
2013-04-03
Author
Aguilar, M.
Alberti, G.
Alpat, B.
Alvino, A.
Ambrosi, G.
Andeen, K.
Anderhub, H.
Arruda, L.
Azzarello, P.
Bachlechner, A.
Barao, F.
Baret, B.
Barrau, A.
Barrin, L.
Bartoloni, A.
Basara, L.
Basili, A.
Batalha, L.
Bates, J.
Battiston, R.
Bazo, J.
Becker, R.
Becker, U.
Behlmann, M.
Beischer, B.
Berdugo, J.
Berges, P.
Bertucci, B.
Bigongiari, G.
Biland, A.
Bindi, V.
Bizzaglia, S.
Boella, G.
de Boer, W.
Bollweg, K.
Bolmont, J.
Borgia, B.
Borsini, S.
Boschini, M. J.
Boudoul, G.
Bourquin, M.
Brun, P.
Buenerd, M.
Burger, J.
Burger, W.
Cadoux, F.
Cai, X. D.
Capell, M.
Casadei, D.
Casaus, J.
Cascioli, V.
Castellini, G.
Cernuda, I.
Cervelli, F.
Chae, M. J.
Chang, Y. H.
Chen, A. I.
Chen, C. R.
Chen, H.
Cheng, G. M.
Chen, H. S.
Cheng, L.
Chernoplyiokov, N.
Chikanian, A.
Choumilov, E.
Choutko, V.
Chung, C. H.
Clark, C.
Clavero, R.
Coignet, G.
Commichau, V.
Consolandi, C.
Contin, A.
Corti, C.
Dios, M. T. Costado
Coste, B.
Crespo, D.
Cui, Z.
Dai, M.
Delgado, C.
Della Torre, S.
Demirköz, Melahat Bilge
Dennett, P.
Derome, L.
Di Falco, S.
Diao, X. H.
Diago, A.
Djambazov, L.
Diaz, C.
von Doetinchem, P.
Du, W. J.
Dubois, J. M.
Duperay, R.
Duranti, M.
D'Urso, D.
Egorov, A.
Eline, A.
Eppling, F. J.
Eronen, T.
van Es, J.
Esser, H.
Falvard, A.
Fiandrini, E.
Fiasson, A.
Finch, E.
Fisher, P.
Flood, K.
Foglio, R.
Fohey, M.
Fopp, S.
Fouque, N.
Galaktionov, Y.
Gallilee, M.
Gallin-Martel, L.
Gallucci, G.
Garcia, B.
Garcia, J.
Garcia-Lopez, R.
Garcia-Tabares, L.
Gargiulo, C.
Gast, H.
Gebauer, I.
Gentile, S.
Gervasi, M.
Gillard, W.
Giovacchini, F.
Girard, L.
Goglov, P.
Gong, J.
Goy-Henningsen, C.
Grandi, D.
Graziani, M.
Grechko, A.
Gross, A.
Guerri, I.
de la Guia, C.
Guo, K. H.
Habiby, M.
Haino, S.
Hauler, F.
He, Z. H.
Heil, M.
Heilig, J.
Hermel, R.
Hofer, H.
Huang, Z. C.
Hungerford, W.
Incagli, M.
Ionica, M.
Jacholkowska, A.
Jang, W. Y.
Jinchi, H.
Jongmanns, M.
Journet, L.
Jungermann, L.
Karpinski, W.
Kim, G. N.
Kim, K. S.
Kirn, Th.
Kossakowski, R.
Koulemzine, A.
Kounina, O.
Kounine, A.
Koutsenko, V.
Krafczyk, M. S.
Laudi, E.
Laurenti, G.
Lauritzen, C.
Lebedev, A.
Lee, M. W.
Lee, S. C.
Leluc, C.
Vargas, H. Leon
Lepareur, V.
Li, J. Q.
Li, Q.
Li, T. X.
Li, W.
Li, Z. H.
Lipari, P.
Lin, C. H.
Liu, D.
Liu, H.
Lomtadze, T.
Lu, Y. S.
Lucidi, S.
Luebelsmeyer, K.
Luo, J. Z.
Lustermann, W.
Lv, S.
Madsen, J.
Majka, R.
Malinin, A.
Mana, C.
Marin, J.
Martin, T.
Martinez, G.
Masciocchi, F.
Masi, N.
Maurin, D.
McInturff, A.
McIntyre, P.
Menchaca-Rocha, A.
Meng, Q.
Menichelli, M.
Mereu, I.
Millinger, M.
Mo, D. C.
Molina, M.
Mott, P.
Mujunen, A.
Natale, S.
Nemeth, P.
Ni, J. Q.
Nikonov, N.
Nozzoli, F.
Nunes, P.
Obermeier, A.
Oh, S.
Oliva, A.
Palmonari, F.
Palomares, C.
Paniccia, M.
Papi, A.
Park, W. H.
Pauluzzi, M.
Pauss, F.
Pauw, A.
Pedreschi, E.
Pensotti, S.
Pereira, R.
Perrin, E.
Pessina, G.
Pierschel, G.
Pilo, F.
Piluso, A.
Pizzolotto, C.
Plyaskin, V.
Pochon, J.
Pohl, M.
Poireau, V.
Porter, S.
Pouxe, J.
Putze, A.
Quadrani, L.
Qi, X. N.
Rancoita, P. G.
Rapin, D.
Ren, Z. L.
Ricol, J. S.
Riihonen, E.
Rodriguez, I.
Roeser, U.
Rosier-Lees, S.
Rossi, L.
Rozhkov, A.
Rozza, D.
Sabellek, A.
Sagdeev, R.
Sandweiss, J.
Santos, B.
Saouter, P.
Sarchioni, M.
Schael, S.
Schinzel, D.
Schmanau, M.
Schwering, G.
von Dratzig, A. Schulz
Scolieri, G.
Seo, E. S.
Shan, B. S.
Shi, J. Y.
Shi, Y. M.
Siedenburg, T.
Siedling, R.
Son, D.
Spada, F.
Spinella, F.
Steuer, M.
Stiff, K.
Sun, W.
Sun, W. H.
Sun, X. H.
Tacconi, M.
Tang, C. P.
Tang, X. W.
Tang, Z. C.
Tao, L.
Tassan-Viol, J.
Ting, Samuel C. C.
Ting, S. M.
Titus, C.
Tomassetti, N.
Toral, F.
Torsti, J.
Tsai, J. R.
Tutt, J. C.
Ulbricht, J.
Urban, T.
Vagelli, V.
Valente, E.
Vannini, C.
Valtonen, E.
Trevino, M. Vargas
Vaurynovich, S.
Vecchi, M.
Vergain, M.
Verlaat, B.
Vescovi, C.
Vialle, J. P.
Viertel, G.
Volpini, G.
Wang, D.
Wang, N. H.
Wang, Q. L.
Wang, R. S.
Wang, X.
Wang, Z. X.
Wallraff, W.
Weng, Z. L.
Willenbrock, M.
Wlochal, M.
Wu, H.
Wu, K. Y.
Wu, Z. S.
Xiao, W. J.
Xie, S.
Xiong, R. Q.
Xin, G. M.
Xu, N. S.
Xu, W.
Yan, Q.
Yang, J.
Yang, M.
Ye, Q. H.
Yi, H.
Yu, Y. J.
Yu, Z. Q.
Zeissler, S.
Zhang, J. G.
Zhang, Z.
Zhang, M. M.
Zheng, Z. M.
Zhuang, H. L.
Zhukov, V.
Zichichi, A.
Zuccon, P.
Zurbach, C.
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A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the positron fraction in primary cosmic rays in the energy range from 0.5 to 350 GeV based on 6.8 x 10(6) positron and electron events is presented. The very accurate data show that the positron fraction is steadily increasing from 10 to similar to 250 GeV, but, from 20 to 250 GeV, the slope decreases by an order of magnitude. The positron fraction spectrum shows no fine structure, and the positron to electron ratio shows no observable anisotropy. Together, these features show the existence of new physical phenomena. DOI: 10.1103/PhysRevLett.110.141102
Subject Keywords
General Physics and Astronomy
URI
https://hdl.handle.net/11511/68900
Journal
PHYSICAL REVIEW LETTERS
DOI
https://doi.org/10.1103/physrevlett.110.141102
Collections
Department of Physics, Article
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M. Aguilar et al., “First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-350 GeV,”
PHYSICAL REVIEW LETTERS
, pp. 0–0, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68900.