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
Academic Article
Publication Date:
2013
Short description:
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 / 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, Mj; Boudoul, G; Bourquin, M; Brun, P; Buenerd, M; Burger, J; Burger, W; Cadoux, F; Cai, Xd; Capell, M; Casadei, D; Casaus, J; Cascioli, V; Castellini, G; Cernuda, I; Cervelli, F; Chae, Mj; Chang, Yh; Chen, Ai; Chen, Cr; Chen, H; Cheng, Gm; Chen, Hs; Cheng, L; Chernoplyiokov, N; Chikanian, A; Choumilov, E; Choutko, V; Chung, Ch; Clark, C; Clavero, R; Coignet, G; Commichau, V; Consolandi, C; Contin, A; Corti, C; Dios, Mtc; Coste, B; Crespo, D; Cui, Z; Dai, M; Delgado, C; Della Torre, S; Demirkoz, B; Dennett, P; Derome, L; Di Falco, S; Diao, Xh; Diago, A; Djambazov, L; Diaz, C; von Doetinchem, P; Du, Wj; Dubois, Jm; Duperay, R; Duranti, M; D'Urso, D; Egorov, A; Eline, A; Eppling, Fj; 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, Kh; Habiby, M; Haino, S; Hauler, F; He, Zh; Heil, M; Heilig, J; Hermel, R; Hofer, H; Huang, Zc; Hungerford, W; Incagli, M; Ionica, M; Jacholkowska, A; Jang, Wy; Jinchi, H; Jongmanns, M; Journet, L; Jungermann, L; Karpinski, W; Kim, Gn; Kim, Ks; Kirn, T; Kossakowski, R; Koulemzine, A; Kounina, O; Kounine, A; Koutsenko, V; Krafczyk, Ms; Laudi, E; Laurenti, G; Lauritzen, C; Lebedev, A; Lee, Mw; Lee, Sc; Leluc, C; Vargas, Hl; Lepareur, V; Li, Jq; Li, Q; Li, Tx; Li, W; Li, Zh; Lipari, P; Lin, Ch; Liu, D; Liu, H; Lomtadze, T; Lu, Ys; Lucidi, S; Lubelsmeyer, K; Luo, Jz; 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, Dc; Molina, M; Mott, P; Mujunen, A; Natale, S; Nemeth, P; Ni, Jq; Nikonov, N; Nozzoli, F; Nunes, P; Obermeier, A; Oh, S; Oliva, A; Palmonari, F; Palomares, C; Paniccia, M; Papi, A; Park, Wh; 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, Xn; Rancoita, Pg; Rapin, D; Ren, Zl; Ricol, Js; 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, As; Scolieri, G; Seo, Es; Shan, Bs; Shi, Jy; Shi, Ym; Siedenburg, T; Siedling, R; Son, D; Spada, F; Spinella, F; Steuer, M; Stiff, K; Sun, W; Sun, Wh; Sun, Xh; Tacconi, M; Tang, Cp; Tang, Xw; Tang, Zc; Tao, L; Tassan-Viol, J; Ting, Scc; Ting, Sm; Titus, C; Tomassetti, N; Toral, F; Torsti, J; Tsai, Jr; Tutt, Jc; Ulbricht, J; Urban, T; Vagelli, V; Valente, E; Vannini, C; Valtonen, E; Trevino, Mv; Vaurynovich, S; Vecchi, M; Vergain, M; Verlaat, B; Vescovi, C; Vialle, Jp; Viertel, G; Volpini, G; Wang, D; Wang, Nh; Wang, Ql; Wang, Rs; Wang, X; Wang, Zx; Wallraff, W; Weng, Zl; Willenbrock, M; Wlochal, M; Wu, H; Wu, Ky; Wu, Zs; Xiao, Wj; Xie, S; Xiong, Rq; Xin, Gm; Xu, Ns; Xu, W; Yan, Q; Yang, J; Yang
abstract:
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
Iris type:
1.1 Articolo in rivista
List of contributors:
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, Mj; Boudoul, G; Bourquin, M; Brun, P; Buenerd, M; Burger, J; Burger, W; Cadoux, F; Cai, Xd; Capell, M; Casadei, D; Casaus, J; Cascioli, V; Castellini, G; Cernuda, I; Cervelli, F; Chae, Mj; Chang, Yh; Chen, Ai; Chen, Cr; Chen, H; Cheng, Gm; Chen, Hs; Cheng, L; Chernoplyiokov, N; Chikanian, A; Choumilov, E; Choutko, V; Chung, Ch; Clark, C; Clavero, R; Coignet, G; Commichau, V; Consolandi, C; Contin, A; Corti, C; Dios, Mtc; Coste, B; Crespo, D; Cui, Z; Dai, M; Delgado, C; Della Torre, S; Demirkoz, B; Dennett, P; Derome, L; Di Falco, S; Diao, Xh; Diago, A; Djambazov, L; Diaz, C; von Doetinchem, P; Du, Wj; Dubois, Jm; Duperay, R; Duranti, M; D'Urso, D; Egorov, A; Eline, A; Eppling, Fj; 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, Kh; Habiby, M; Haino, S; Hauler, F; He, Zh; Heil, M; Heilig, J; Hermel, R; Hofer, H; Huang, Zc; Hungerford, W; Incagli, M; Ionica, M; Jacholkowska, A; Jang, Wy; Jinchi, H; Jongmanns, M; Journet, L; Jungermann, L; Karpinski, W; Kim, Gn; Kim, Ks; Kirn, T; Kossakowski, R; Koulemzine, A; Kounina, O; Kounine, A; Koutsenko, V; Krafczyk, Ms; Laudi, E; Laurenti, G; Lauritzen, C; Lebedev, A; Lee, Mw; Lee, Sc; Leluc, C; Vargas, Hl; Lepareur, V; Li, Jq; Li, Q; Li, Tx; Li, W; Li, Zh; Lipari, P; Lin, Ch; Liu, D; Liu, H; Lomtadze, T; Lu, Ys; Lucidi, S; Lubelsmeyer, K; Luo, Jz; 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, Dc; Molina, M; Mott, P; Mujunen, A; Natale, S; Nemeth, P; Ni, Jq; Nikonov, N; Nozzoli, F; Nunes, P; Obermeier, A; Oh, S; Oliva, A; Palmonari, F; Palomares, C; Paniccia, M; Papi, A; Park, Wh; 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, Xn; Rancoita, Pg; Rapin, D; Ren, Zl; Ricol, Js; 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, As; Scolieri, G; Seo, Es; Shan, Bs; Shi, Jy; Shi, Ym; Siedenburg, T; Siedling, R; Son, D; Spada, F; Spinella, F; Steuer, M; Stiff, K; Sun, W; Sun, Wh; Sun, Xh; Tacconi, M; Tang, Cp; Tang, Xw; Tang, Zc; Tao, L; Tassan-Viol, J; Ting, Scc; Ting, Sm; Titus, C; Tomassetti, N; Toral, F; Torsti, J; Tsai, Jr; Tutt, Jc; Ulbricht, J; Urban, T; Vagelli, V; Valente, E; Vannini, C; Valtonen, E; Trevino, Mv; Vaurynovich, S; Vecchi, M; Vergain, M; Verlaat, B; Vescovi, C; Vialle, Jp; Viertel, G; Volpini, G; Wang, D; Wang, Nh; Wang, Ql; Wang, Rs; Wang, X; Wang, Zx; Wallraff, W; Weng, Zl; Willenbrock, M; Wlochal, M; Wu, H; Wu, Ky; Wu, Zs; Xiao, Wj; Xie, S; Xiong, Rq; Xin, Gm; Xu, Ns; Xu, W; Yan, Q; Yang, J; Yang, M; Ye, Qh; Yi, H; Yu, Yj; Yu, Zq; Zeissler, S; Zhang, Jg; Zhang, Z; Zhang, Mm; Zheng, Zm; Zhuang, Hl; Zhukov, V; Zichichi, A; Zuccon, P; Zurbach, C
Published in: