Towards Understanding the Origin of Cosmic-Ray Positrons

M. Aguilar; L. Ali Cavasonza; G. Ambrosi; L. Arruda; N. Attig; P. Azzarello; A. Bachlechner; F. Barao; A. Barrau; L. Barrin; A. Bartoloni; L. Basara; S. Başeǧmez-Du Pree; R. Battiston; U. Becker; M. Behlmann; B. Beischer; J. Berdugo; B. Bertucci; V. Bindi; W. De Boer; K. Bollweg; B. Borgia; M. J. Boschini; M. Bourquin; E. F. Bueno; J. Burger; W. J. Burger; X. D. Cai; M. Capell; S. Caroff; J. Casaus; G. Castellini; F. Cervelli; Y. H. Chang; G. M. Chen; H. S. Chen; Y. Chen; L. Cheng; H. Y. Chou; V. Choutko; C. H. Chung; C. Clark; G. Coignet; C. Consolandi; A. Contin; C. Corti; M. Crispoltoni; Z. Cui; K. Dadzie; Y. M. Dai; A. Datta; C. Delgado; S. Della Torre; M. B. Demirköz; L. Derome; S. Di Falco; F. Dimiccoli; C. Díaz; P. Von Doetinchem; F. Dong; F. Donnini; M. Duranti; A. Egorov; A. Eline; T. Eronen; J. Feng; E. Fiandrini; P. Fisher; V. Formato; Y. Galaktionov; R. J. García-López; C. Gargiulo; H. Gast; I. Gebauer; M. Gervasi; F. Giovacchini; D. M. Gómez-Coral; J. Gong; C. Goy; V. Grabski; D. Grandi; M. Graziani; K. H. Guo; S. Haino; K. C. Han; Z. H. He; M. Heil; T. H. Hsieh; H. Huang; Z. C. Huang; M. Incagli; Yi Jia; H. Jinchi; K. Kanishev; B. Khiali; Th Kirn; C. Konak; O. Kounina; A. Kounine; V. Koutsenko; A. Kulemzin; G. La Vacca; E. Laudi; G. Laurenti; I. Lazzizzera; A. Lebedev; H. T. Lee; S. C. Lee; C. Leluc; J. Q. Li; Q. Li; T. X. Li; Z. H. Li; C. Light; C. H. Lin; T. Lippert; F. Z. Liu; Hu Liu; Z. Liu; S. Q. Lu; Y. S. Lu; K. Luebelsmeyer; F. Luo; J. Z. Luo; Xi Luo; S. S. Lyu; F. MacHate; C. Mañá; J. Marín; T. Martin; G. Martínez; N. Masi; D. Maurin; A. Menchaca-Rocha; Q. Meng; D. C. Mo; M. Molero; P. Mott; L. Mussolin; T. Nelson; J. Q. Ni; N. Nikonov; F. Nozzoli; A. Oliva; M. Orcinha; M. Palermo; F. Palmonari; M. Paniccia; A. Pashnin; M. Pauluzzi; S. Pensotti; C. Perrina; H. D. Phan; N. Picot-Clemente; V. Plyaskin; M. Pohl; V. Poireau; A. Popkow; L. Quadrani; X. M. Qi; X. Qin; Z. Y. Qu; P. G. Rancoita; D. Rapin; A. Reina Conde; S. Rosier-Lees; A. Rozhkov; D. Rozza; R. Sagdeev; C. Solano; S. Schael; S. M. Schmidt; A. Schulz Von Dratzig; G. Schwering; E. S. Seo; B. S. Shan; J. Y. Shi; T. Siedenburg; J. W. Song; Z. T. Sun; M. Tacconi; X. W. Tang; Z. C. Tang; J. Tian; Samuel C.C. Ting; S. M. Ting; N. Tomassetti; J. Torsti; T. Urban; V. Vagelli; E. Valente; E. Valtonen; M. Vázquez Acosta; M. Vecchi; M. Velasco; J. P. Vialle; J. Vizán; L. Q. Wang; N. H. Wang; Q. L. Wang; X. Wang; X. Q. Wang; Z. X. Wang; J. Wei; Z. L. Weng; H. Wu; R. Q. Xiong; W. Xu; Q. Yan; Y. Yang; H. Yi; Y. J. Yu; Z. Q. Yu; M. Zannoni; S. Zeissler; C. Zhang; F. Zhang; J. H. Zhang; Z. Zhang; F. Zhao; Z. M. Zheng; H. L. Zhuang; V. Zhukov; A. Zichichi; N. Zimmermann; P. Zuccon

doi:10.1103/PhysRevLett.122.041102

Towards Understanding the Origin of Cosmic-Ray Positrons

M. Aguilar
, L. Ali Cavasonza
, G. Ambrosi
, L. Arruda
, N. Attig
, P. Azzarello
, A. Bachlechner
, F. Barao
, A. Barrau
, L. Barrin
, A. Bartoloni
, L. Basara
, S. Başeǧmez-Du Pree
, R. Battiston
, U. Becker
, M. Behlmann
, B. Beischer
, J. Berdugo
, B. Bertucci
, V. Bindi

W. De Boer, K. Bollweg, B. Borgia, M. J. Boschini, M. Bourquin, E. F. Bueno, J. Burger, W. J. Burger, X. D. Cai, M. Capell, S. Caroff, J. Casaus, G. Castellini, F. Cervelli, Y. H. Chang, G. M. Chen, H. S. Chen, Y. Chen, L. Cheng, H. Y. Chou, V. Choutko, C. H. Chung, C. Clark, G. Coignet, C. Consolandi, A. Contin, C. Corti, M. Crispoltoni, Z. Cui, K. Dadzie, Y. M. Dai, A. Datta, C. Delgado, S. Della Torre, M. B. Demirköz, L. Derome, S. Di Falco, F. Dimiccoli, C. Díaz, P. Von Doetinchem, F. Dong, F. Donnini, M. Duranti, A. Egorov, A. Eline, T. Eronen, J. Feng, E. Fiandrini, P. Fisher, V. Formato, Y. Galaktionov, R. J. García-López, C. Gargiulo, H. Gast, I. Gebauer, M. Gervasi, F. Giovacchini, D. M. Gómez-Coral, J. Gong, C. Goy, V. Grabski, D. Grandi, M. Graziani, K. H. Guo, S. Haino, K. C. Han, Z. H. He, M. Heil, T. H. Hsieh, H. Huang, Z. C. Huang, M. Incagli, Yi Jia, H. Jinchi, K. Kanishev, B. Khiali, Th Kirn, C. Konak, O. Kounina, A. Kounine, V. Koutsenko, A. Kulemzin, G. La Vacca, E. Laudi, G. Laurenti, I. Lazzizzera, A. Lebedev, H. T. Lee, S. C. Lee, C. Leluc, J. Q. Li, Q. Li, T. X. Li, Z. H. Li, C. Light, C. H. Lin, T. Lippert, F. Z. Liu, Hu Liu, Z. Liu, S. Q. Lu, Y. S. Lu, K. Luebelsmeyer, F. Luo, J. Z. Luo, Xi Luo, S. S. Lyu, F. MacHate, C. Mañá, J. Marín, T. Martin, G. Martínez, N. Masi, D. Maurin, A. Menchaca-Rocha, Q. Meng, D. C. Mo, M. Molero, P. Mott, L. Mussolin, T. Nelson, J. Q. Ni, N. Nikonov, F. Nozzoli, A. Oliva, M. Orcinha, M. Palermo, F. Palmonari, M. Paniccia, A. Pashnin, M. Pauluzzi, S. Pensotti, C. Perrina, H. D. Phan, N. Picot-Clemente, V. Plyaskin, M. Pohl, V. Poireau, A. Popkow, L. Quadrani, X. M. Qi, X. Qin, Z. Y. Qu, P. G. Rancoita, D. Rapin, A. Reina Conde, S. Rosier-Lees, A. Rozhkov, D. Rozza, R. Sagdeev, C. Solano, S. Schael, S. M. Schmidt, A. Schulz Von Dratzig, G. Schwering, E. S. Seo, B. S. Shan, J. Y. Shi, T. Siedenburg, J. W. Song, Z. T. Sun, M. Tacconi, X. W. Tang, Z. C. Tang, J. Tian, Samuel C.C. Ting, S. M. Ting, N. Tomassetti, J. Torsti, T. Urban, V. Vagelli, E. Valente, E. Valtonen, M. Vázquez Acosta, M. Vecchi, M. Velasco, J. P. Vialle, J. Vizán, L. Q. Wang, N. H. Wang, Q. L. Wang, X. Wang, X. Q. Wang, Z. X. Wang, J. Wei, Z. L. Weng, H. Wu, R. Q. Xiong, W. Xu, Q. Yan, Y. Yang, H. Yi, Y. J. Yu, Z. Q. Yu, M. Zannoni, S. Zeissler, C. Zhang, F. Zhang, J. H. Zhang, Z. Zhang, F. Zhao, Z. M. Zheng, H. L. Zhuang, V. Zhukov, A. Zichichi, N. Zimmermann, P. Zuccon

人工智能学院(人工智能研究院)

CIEMAT
RWTH Aachen University
National Institute for Nuclear Physics
Laboratório de Instrumentação e Física Experimental de Partículas
Jülich Research Centre
University of Geneva
Université Grenoble Alpes
CERN
University of Trento
University of Groningen
ASI
Massachusetts Institute of Technology
University of Perugia
University of Hawai'i at Mānoa
Karlsruhe Institute of Technology
NASA Johnson Space Center
University of Rome La Sapienza
Universidade de São Paulo
National Research Council of Italy
National Central University
CAS - Institute of High Energy Physics
University of Chinese Academy of Sciences
Shandong University
University of Bologna
CAS - Institute of Electrical Engineering
Middle East Technical University
Southeast University, Nanjing
ASI Space Science Data Center (SSDC)
University of Turku
University of La Laguna
University of Milan - Bicocca
Universidad Nacional Autónoma de México
Sun Yat-Sen University
Academia Sinica - Institute of Physics
Chung-shan Institute of Science and Technology Taiwan
Wuhan University
Academia Sinica Taiwan HQ
University of Maryland, College Park
Nankai University
National Cheng Kung University
Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

317 引用（Scopus）

摘要

Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties are (a) a significant excess starting from 25.2±1.8 GeV compared to the lower-energy, power-law trend, (b) a sharp dropoff above 284-64+91 GeV, (c) in the entire energy range the positron flux is well described by the sum of a term associated with the positrons produced in the collision of cosmic rays, which dominates at low energies, and a new source term of positrons, which dominates at high energies, and (d) a finite energy cutoff of the source term of Es=810-180+310 GeV is established with a significance of more than 4σ. These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter annihilation or from other astrophysical sources.

源语言	英语
文章编号	041102
期刊	Physical Review Letters
卷	122
期	4
DOI	https://doi.org/10.1103/PhysRevLett.122.041102
出版状态	已出版 - 2019

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10.1103/PhysRevLett.122.041102

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引用此

Aguilar, M., Ali Cavasonza, L., Ambrosi, G., Arruda, L., Attig, N., Azzarello, P., Bachlechner, A., Barao, F., Barrau, A., Barrin, L., Bartoloni, A., Basara, L., Başeǧmez-Du Pree, S., Battiston, R., Becker, U., Behlmann, M., Beischer, B., Berdugo, J., Bertucci, B., ... Zuccon, P. (2019). Towards Understanding the Origin of Cosmic-Ray Positrons. Physical Review Letters, 122(4), 文章 041102. https://doi.org/10.1103/PhysRevLett.122.041102

@article{8fb91b5e52734f73b3feaab0bf8d2650,

title = "Towards Understanding the Origin of Cosmic-Ray Positrons",

abstract = "Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties are (a) a significant excess starting from 25.2±1.8 GeV compared to the lower-energy, power-law trend, (b) a sharp dropoff above 284-64+91 GeV, (c) in the entire energy range the positron flux is well described by the sum of a term associated with the positrons produced in the collision of cosmic rays, which dominates at low energies, and a new source term of positrons, which dominates at high energies, and (d) a finite energy cutoff of the source term of Es=810-180+310 GeV is established with a significance of more than 4σ. These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter annihilation or from other astrophysical sources.",

author = "M. Aguilar and \{Ali Cavasonza\}, L. and G. Ambrosi and L. Arruda and N. Attig and P. Azzarello and A. Bachlechner and F. Barao and A. Barrau and L. Barrin and A. Bartoloni and L. Basara and \{Ba{\c s}eǧmez-Du Pree\}, S. and R. Battiston and U. Becker and M. Behlmann and B. Beischer and J. Berdugo and B. Bertucci and V. Bindi and \{De Boer\}, W. and K. Bollweg and B. Borgia and Boschini, \{M. J.\} and M. Bourquin and Bueno, \{E. F.\} and J. Burger and Burger, \{W. J.\} and Cai, \{X. D.\} and M. Capell and S. Caroff and J. Casaus and G. Castellini and F. Cervelli and Chang, \{Y. H.\} and Chen, \{G. M.\} and Chen, \{H. S.\} and Y. Chen and L. Cheng and Chou, \{H. Y.\} and V. Choutko and Chung, \{C. H.\} and C. Clark and G. Coignet and C. Consolandi and A. Contin and C. Corti and M. Crispoltoni and Z. Cui and K. Dadzie and Dai, \{Y. M.\} and A. Datta and C. Delgado and \{Della Torre\}, S. and Demirk{\"o}z, \{M. B.\} and L. Derome and \{Di Falco\}, S. and F. Dimiccoli and C. D{\'i}az and \{Von Doetinchem\}, P. and F. Dong and F. Donnini and M. Duranti and A. Egorov and A. Eline and T. Eronen and J. Feng and E. Fiandrini and P. Fisher and V. Formato and Y. Galaktionov and Garc{\'i}a-L{\'o}pez, \{R. J.\} and C. Gargiulo and H. Gast and I. Gebauer and M. Gervasi and F. Giovacchini and G{\'o}mez-Coral, \{D. M.\} and J. Gong and C. Goy and V. Grabski and D. Grandi and M. Graziani and Guo, \{K. H.\} and S. Haino and Han, \{K. C.\} and He, \{Z. H.\} and M. Heil and Hsieh, \{T. H.\} and H. Huang and Huang, \{Z. C.\} and M. Incagli and Yi Jia and H. Jinchi and K. Kanishev and B. Khiali and Th Kirn and C. Konak and O. Kounina and A. Kounine and V. Koutsenko and A. Kulemzin and \{La Vacca\}, G. and E. Laudi and G. Laurenti and I. Lazzizzera and A. Lebedev and Lee, \{H. T.\} and Lee, \{S. C.\} and C. Leluc and Li, \{J. Q.\} and Q. Li and Li, \{T. X.\} and Li, \{Z. H.\} and C. Light and Lin, \{C. H.\} and T. Lippert and Liu, \{F. Z.\} and Hu Liu and Z. Liu and Lu, \{S. Q.\} and Lu, \{Y. S.\} and K. Luebelsmeyer and F. Luo and Luo, \{J. Z.\} and Xi Luo and Lyu, \{S. S.\} and F. MacHate and C. Ma{\~n}{\'a} and J. Mar{\'i}n and T. Martin and G. Mart{\'i}nez and N. Masi and D. Maurin and A. Menchaca-Rocha and Q. Meng and Mo, \{D. C.\} and M. Molero and P. Mott and L. Mussolin and T. Nelson and Ni, \{J. Q.\} and N. Nikonov and F. Nozzoli and A. Oliva and M. Orcinha and M. Palermo and F. Palmonari and M. Paniccia and A. Pashnin and M. Pauluzzi and S. Pensotti and C. Perrina and Phan, \{H. D.\} and N. Picot-Clemente and V. Plyaskin and M. Pohl and V. Poireau and A. Popkow and L. Quadrani and Qi, \{X. M.\} and X. Qin and Qu, \{Z. Y.\} and Rancoita, \{P. G.\} and D. Rapin and Conde, \{A. Reina\} and S. Rosier-Lees and A. Rozhkov and D. Rozza and R. Sagdeev and C. Solano and S. Schael and Schmidt, \{S. M.\} and \{Schulz Von Dratzig\}, A. and G. Schwering and Seo, \{E. S.\} and Shan, \{B. S.\} and Shi, \{J. Y.\} and T. Siedenburg and Song, \{J. W.\} and Sun, \{Z. T.\} and M. Tacconi and Tang, \{X. W.\} and Tang, \{Z. C.\} and J. Tian and Ting, \{Samuel C.C.\} and Ting, \{S. M.\} and N. Tomassetti and J. Torsti and T. Urban and V. Vagelli and E. Valente and E. Valtonen and \{V{\'a}zquez Acosta\}, M. and M. Vecchi and M. Velasco and Vialle, \{J. P.\} and J. Viz{\'a}n and Wang, \{L. Q.\} and Wang, \{N. H.\} and Wang, \{Q. L.\} and X. Wang and Wang, \{X. Q.\} and Wang, \{Z. X.\} and J. Wei and Weng, \{Z. L.\} and H. Wu and Xiong, \{R. Q.\} and W. Xu and Q. Yan and Y. Yang and H. Yi and Yu, \{Y. J.\} and Yu, \{Z. Q.\} and M. Zannoni and S. Zeissler and C. Zhang and F. Zhang and Zhang, \{J. H.\} and Z. Zhang and F. Zhao and Zheng, \{Z. M.\} and Zhuang, \{H. L.\} and V. Zhukov and A. Zichichi and N. Zimmermann and P. Zuccon",

note = "Publisher Copyright: {\textcopyright} 2019 authors.",

year = "2019",

doi = "10.1103/PhysRevLett.122.041102",

language = "英语",

volume = "122",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

}

Aguilar, M, Ali Cavasonza, L, Ambrosi, G, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeǧmez-Du Pree, S, Battiston, R, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, De Boer, W, Bollweg, K, Borgia, B, Boschini, MJ, Bourquin, M, Bueno, EF, Burger, J, Burger, WJ, Cai, XD, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cervelli, F, Chang, YH, Chen, GM, Chen, HS, Chen, Y, Cheng, L, Chou, HY, Choutko, V, Chung, CH, Clark, C, Coignet, G, Consolandi, C, Contin, A, Corti, C, Crispoltoni, M, Cui, Z, Dadzie, K, Dai, YM, Datta, A, Delgado, C, Della Torre, S, Demirköz, MB, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, Von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Fisher, P, Formato, V, Galaktionov, Y, García-López, RJ, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Giovacchini, F, Gómez-Coral, DM, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guo, KH, Haino, S, Han, KC, He, ZH, Heil, M, Hsieh, TH, Huang, H, Huang, ZC, Incagli, M, Jia, Y, Jinchi, H, Kanishev, K, Khiali, B, Kirn, T, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Kulemzin, A, La Vacca, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, HT, Lee, SC, Leluc, C, Li, JQ, Li, Q, Li, TX, Li, ZH, Light, C, Lin, CH, Lippert, T, Liu, FZ, Liu, H, Liu, Z, Lu, SQ, Lu, YS, Luebelsmeyer, K, Luo, F, Luo, JZ, Luo, X, Lyu, SS, MacHate, F, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca-Rocha, A, Meng, Q, Mo, DC, Molero, M, Mott, P, Mussolin, L, Nelson, T, Ni, JQ, Nikonov, N, Nozzoli, F, Oliva, A, Orcinha, M, Palermo, M, Palmonari, F, Paniccia, M, Pashnin, A, Pauluzzi, M, Pensotti, S, Perrina, C, Phan, HD, Picot-Clemente, N, Plyaskin, V, Pohl, M, Poireau, V, Popkow, A, Quadrani, L, Qi, XM, Qin, X, Qu, ZY, Rancoita, PG, Rapin, D, Conde, AR, Rosier-Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Solano, C, Schael, S, Schmidt, SM, Schulz Von Dratzig, A, Schwering, G, Seo, ES, Shan, BS, Shi, JY, Siedenburg, T, Song, JW, Sun, ZT, Tacconi, M, Tang, XW, Tang, ZC, Tian, J, Ting, SCC, Ting, SM, Tomassetti, N, Torsti, J, Urban, T, Vagelli, V, Valente, E, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, JP, Vizán, J, Wang, LQ, Wang, NH, Wang, QL, Wang, X, Wang, XQ, Wang, ZX, Wei, J, Weng, ZL, Wu, H, Xiong, RQ, Xu, W, Yan, Q, Yang, Y, Yi, H, Yu, YJ, Yu, ZQ, Zannoni, M, Zeissler, S, Zhang, C, Zhang, F, Zhang, JH, Zhang, Z, Zhao, F, Zheng, ZM, Zhuang, HL, Zhukov, V, Zichichi, A, Zimmermann, N & Zuccon, P 2019, 'Towards Understanding the Origin of Cosmic-Ray Positrons', Physical Review Letters, 卷 122, 号码 4, 041102. https://doi.org/10.1103/PhysRevLett.122.041102

TY - JOUR

T1 - Towards Understanding the Origin of Cosmic-Ray Positrons

AU - Aguilar, M.

AU - Ali Cavasonza, L.

AU - Ambrosi, G.

AU - Arruda, L.

AU - Attig, N.

AU - Azzarello, P.

AU - Bachlechner, A.

AU - Barao, F.

AU - Barrau, A.

AU - Barrin, L.

AU - Bartoloni, A.

AU - Basara, L.

AU - Başeǧmez-Du Pree, S.

AU - Battiston, R.

AU - Becker, U.

AU - Behlmann, M.

AU - Beischer, B.

AU - Berdugo, J.

AU - Bertucci, B.

AU - Bindi, V.

AU - De Boer, W.

AU - Bollweg, K.

AU - Borgia, B.

AU - Boschini, M. J.

AU - Bourquin, M.

AU - Bueno, E. F.

AU - Burger, J.

AU - Burger, W. J.

AU - Cai, X. D.

AU - Capell, M.

AU - Caroff, S.

AU - Casaus, J.

AU - Castellini, G.

AU - Cervelli, F.

AU - Chang, Y. H.

AU - Chen, G. M.

AU - Chen, H. S.

AU - Chen, Y.

AU - Cheng, L.

AU - Chou, H. Y.

AU - Choutko, V.

AU - Chung, C. H.

AU - Clark, C.

AU - Coignet, G.

AU - Consolandi, C.

AU - Contin, A.

AU - Corti, C.

AU - Crispoltoni, M.

AU - Cui, Z.

AU - Dadzie, K.

AU - Dai, Y. M.

AU - Datta, A.

AU - Delgado, C.

AU - Della Torre, S.

AU - Demirköz, M. B.

AU - Derome, L.

AU - Di Falco, S.

AU - Dimiccoli, F.

AU - Díaz, C.

AU - Von Doetinchem, P.

AU - Dong, F.

AU - Donnini, F.

AU - Duranti, M.

AU - Egorov, A.

AU - Eline, A.

AU - Eronen, T.

AU - Feng, J.

AU - Fiandrini, E.

AU - Fisher, P.

AU - Formato, V.

AU - Galaktionov, Y.

AU - García-López, R. J.

AU - Gargiulo, C.

AU - Gast, H.

AU - Gebauer, I.

AU - Gervasi, M.

AU - Giovacchini, F.

AU - Gómez-Coral, D. M.

AU - Gong, J.

AU - Goy, C.

AU - Grabski, V.

AU - Grandi, D.

AU - Graziani, M.

AU - Guo, K. H.

AU - Haino, S.

AU - Han, K. C.

AU - He, Z. H.

AU - Heil, M.

AU - Hsieh, T. H.

AU - Huang, H.

AU - Huang, Z. C.

AU - Incagli, M.

AU - Jia, Yi

AU - Jinchi, H.

AU - Kanishev, K.

AU - Khiali, B.

AU - Kirn, Th

AU - Konak, C.

AU - Kounina, O.

AU - Kounine, A.

AU - Koutsenko, V.

AU - Kulemzin, A.

AU - La Vacca, G.

AU - Laudi, E.

AU - Laurenti, G.

AU - Lazzizzera, I.

AU - Lebedev, A.

AU - Lee, H. T.

AU - Lee, S. C.

AU - Leluc, C.

AU - Li, J. Q.

AU - Li, Q.

AU - Li, T. X.

AU - Li, Z. H.

AU - Light, C.

AU - Lin, C. H.

AU - Lippert, T.

AU - Liu, F. Z.

AU - Liu, Hu

AU - Liu, Z.

AU - Lu, S. Q.

AU - Lu, Y. S.

AU - Luebelsmeyer, K.

AU - Luo, F.

AU - Luo, J. Z.

AU - Luo, Xi

AU - Lyu, S. S.

AU - MacHate, F.

AU - Mañá, C.

AU - Marín, J.

AU - Martin, T.

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PY - 2019

Y1 - 2019

N2 - Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties are (a) a significant excess starting from 25.2±1.8 GeV compared to the lower-energy, power-law trend, (b) a sharp dropoff above 284-64+91 GeV, (c) in the entire energy range the positron flux is well described by the sum of a term associated with the positrons produced in the collision of cosmic rays, which dominates at low energies, and a new source term of positrons, which dominates at high energies, and (d) a finite energy cutoff of the source term of Es=810-180+310 GeV is established with a significance of more than 4σ. These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter annihilation or from other astrophysical sources.

AB - Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million positrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties are (a) a significant excess starting from 25.2±1.8 GeV compared to the lower-energy, power-law trend, (b) a sharp dropoff above 284-64+91 GeV, (c) in the entire energy range the positron flux is well described by the sum of a term associated with the positrons produced in the collision of cosmic rays, which dominates at low energies, and a new source term of positrons, which dominates at high energies, and (d) a finite energy cutoff of the source term of Es=810-180+310 GeV is established with a significance of more than 4σ. These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter annihilation or from other astrophysical sources.

UR - https://www.scopus.com/pages/publications/85061008587

U2 - 10.1103/PhysRevLett.122.041102

DO - 10.1103/PhysRevLett.122.041102

M3 - 文章

C2 - 30768313

AN - SCOPUS:85061008587

SN - 0031-9007

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 041102

ER -

Towards Understanding the Origin of Cosmic-Ray Positrons

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