作者
M Aguilar, Giovanni Alberti, Behcet Alpat, Antonio Alvino, Giovanni Ambrosi, Karen Andeen, H Anderhub, Luisa Arruda, Philipp Azzarello, A Bachlechner, Fernando Barao, B Baret, Aurelien Barrau, L Barrin, Alessandro Bartoloni, L Basara, A Basili, L Batalha, J Bates, Roberto Battiston, J Bazo, R Becker, U Becker, M Behlmann, B Beischer, J Berdugo, P Berges, Bruna Bertucci, Gabriele Bigongiari, A Biland, V Bindi, S Bizzaglia, G Boella, W De Boer, K Bollweg, J Bolmont, B Borgia, S Borsini, MJ Boschini, G Boudoul, M Bourquin, P Brun, M Buénerd, J Burger, W Burger, F Cadoux, XD Cai, M Capell, D Casadei, J Casaus, V Cascioli, G Castellini, I Cernuda, Franco Cervelli, MJ Chae, YH Chang, AI Chen, CR Chen, H Chen, GM Cheng, HS Chen, L Cheng, N Chernoplyiokov, A Chikanian, E Choumilov, V Choutko, CH Chung, C Clark, R Clavero, G Coignet, V Commichau, C Consolandi, Andrea Contin, C Corti, MT Costado Dios, B Coste, D Crespo, Z Cui, M Dai, C Delgado, S Della Torre, B Demirkoz, P Dennett, L Derome, Stefano Di Falco, XH Diao, A Diago, L Djambazov, C Díaz, P Von Doetinchem, WJ Du, JM Dubois, R Duperay, Matteo Duranti, D D’Urso, A Egorov, A Eline, FJ Eppling, T Eronen, J Van Es, H Esser, Alain Falvard, Emanuele Fiandrini, A Fiasson, E Finch, P Fisher, K Flood, R Foglio, M Fohey, S Fopp, N Fouque, Y Galaktionov, M Gallilee, L Gallin-Martel, Giovanni Gallucci, B García, J García, R García-López, L García-Tabares, C Gargiulo, H Gast, I Gebauer, Simonetta Gentile, M Gervasi, W Gillard, F Giovacchini, L Girard, P Goglov, Jie Gong, C Goy-Henningsen, D Grandi, M Graziani, A Grechko, A Gross, Irene Guerri, C de La Guia, KH Guo, M Habiby, S Haino, F Hauler, ZH He, M Heil, J Heilig, R Hermel, H Hofer, ZC Huang, W Hungerford, M Incagli, M Ionica, A Jacholkowska
发表日期
2013/4/3
期刊
Physical Review Letters
卷号
110
期号
14
页码范围
141102
出版商
American Physical Society
简介
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× 10 6 positron and electron events is presented. The very accurate data show that the positron fraction is steadily increasing from 10 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.
引用总数
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