Skip to Main content Skip to Navigation
Journal articles

High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station

L. Accardo 1 M. Aguilar 2 D. Aisa 1 B. Alpat 1 A. Alvino 1 G. Ambrosi 1 K. Andeen 3 L. Arruda N. Attig 4 P. Azzarello 1 A. Bachlechner 4 F. Barao A. Barrau 5 L. Barrin 6 A. Bartoloni 7 L. Basara 8 M. Battarbee 9 R. Battiston J. Bazo 1 U. Becker 10 M. Behlmann 10 B. Beischer 4 J. Berdugo 2 B. Bertucci 1 G. Bigongiari 11 V. Bindi 12 S. Bizzaglia 1 M. Bizzarri 1 G. Boella 13 W. de Boer 14 K. Bollweg 15 V. Bonnivard 5 B. Borgia 16 S. Borsini 1 M.J. Boschini 13 M. Bourquin 17 J. Burger 10 F. Cadoux 17 X.D. Cai 10 M. Capell 10 S. Caroff 8 G. Carosi 10 J. Casaus 2 V. Cascioli 1 G. Castellini 18 I. Cernuda 2 D. Cerreta 1 F. Cervelli 19 M.J. Chae 20 Y.H. Chang 21 A.I. Chen 10 H. Chen 10 G.M. Cheng 22 H.S. Chen L. Cheng A. Chikanian H.Y. Chou E. Choumilov V. Choutko C.H. Chung F. Cindolo C. Clark R. Clavero G. Coignet 8 C. Consolandi A. Contin C. Corti B. Coste Z. Cui M. Dai C. Delgado S. Della Torre M.B. Demirköz L. Derome 5 S. Di Falco L. Di Masso F. Dimiccoli C. Díaz P. von Doetinchem W.J. Du M. Duranti D. d'Urso A. Eline F.J. Eppling T. Eronen Y.Y. Fan L. Farnesini J. Feng E. Fiandrini A. Fiasson 8 E. Finch P. Fisher Y. Galaktionov G. Gallucci B. García R. García-López H. Gast I. Gebauer M. Gervasi A. Ghelfi 5 W. Gillard F. Giovacchini P. Goglov J. Gong C. Goy 8 V. Grabski D. Grandi M. Graziani C. Guandalini I. Guerri K.H. Guo D. Haas M. Habiby S. Haino K.C. Han Z.H. He M. Heil R. Henning Jakobus Hoffman T.H. Hsieh Z.C. Huang C. Huh M. Incagli M. Ionica W.Y. Jang H. Jinchi K. Kanishev G.N. Kim K.S. Kim Th. Kirn R. Kossakowski 8 O. Kounina A. Kounine V. Koutsenko M.S. Krafczyk S. Kunz G. La Vacca E. Laudi G. Laurenti I. Lazzizzera A. Lebedev H.T. Lee S.C. Lee C. Leluc G. Levi H.L. Li J.Q. Li Q. Li T.X. Li W. Li Y. Li Z.H. Li Z.Y. Li S. Lim C.H. Lin P. Lipari T. Lippert D. Liu Hong Liu M. Lolli T. Lomtadze M.J. Lu Y.S. Lu K. Luebelsmeyer F. Luo J.Z. Luo S.S. Lv R. Majka A. Malinin C. Mañá J. Marín T. Martin Gines Martinez Garcia 2 N. Masi 23 F. Massera 23 D. Maurin 5 A. Menchaca-Rocha Q. Meng D.C. Mo B. Monreal L. Morescalchi P. Mott M. Müller J.Q. Ni N. Nikonov F. Nozzoli P. Nunes A. Obermeier A. Oliva M. Orcinha F. Palmonari C. Palomares M. Paniccia A. Papi M. Pauluzzi E. Pedreschi S. Pensotti R. Pereira R. Pilastrini F. Pilo A. Piluso C. Pizzolotto V. Plyaskin M. Pohl V. Poireau 8 E. Postaci A. Putze 8 L. Quadrani X.M. Qi P.G. Rancoita D. Rapin J.S. Ricol 5 I. Rodríguez S. Rosier-Lees 8 L. Rossi A. Rozhkov D. Rozza G. Rybka R. Sagdeev J. Sandweiss P. Saouter C. Sbarra S. Schael S.M. Schmidt D. Schuckardt A. Schulz von Dratzig G. Schwering G. Scolieri E.S. Seo B.S. Shan Y.H. Shan J.Y. Shi X.Y. Shi Y.M. Shi T. Siedenburg D. Son F. Spada F. Spinella W. Sun W.H. Sun M. Tacconi C.P. Tang X.W. Tang Z.C. Tang L. Tao 8 D. Tescaro Samuel C. C. Ting S.M. Ting N. Tomassetti 5 J. Torsti C. Türkoğlu T. Urban V. Vagelli E. Valente C. Vannini E. Valtonen S. Vaurynovich M. Vecchi 8 M. Velasco J.P. Vialle 8 V. Vitale G. Volpini L.Q. Wang Q.L. Wang R.S. Wang X. Wang Z.X. Wang Z.L. Weng K. Whitman J. Wienkenhöver H. Wu K.Y. Wu X. Xia M. Xie S. Xie R.Q. Xiong G.M. Xin N.S. Xu Wei-Jiang Xu Q. Yan J. Yang M. Yang Q.H. Ye H. Yi Y.J. Yu Z.Q. Yu S. Zeissler J.H. Zhang M.T. Zhang X.B. Zhang Zhen Zhang Z.M. Zheng F. Zhou H.L. Zhuang V. Zhukov A. Zichichi N. Zimmermann P. Zuccon C. Zurbach 24
Abstract : A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200 GeV the positron fraction no longer exhibits an increase with energy.
Complete list of metadata

http://hal.in2p3.fr/in2p3-01066019
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, June 3, 2021 - 4:04:40 PM
Last modification on : Saturday, June 12, 2021 - 11:46:02 AM

File

PhysRevLett.113.121101-accepte...
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

L. Accardo, M. Aguilar, D. Aisa, B. Alpat, A. Alvino, et al.. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station. Physical Review Letters, American Physical Society, 2014, 113, pp.121101. ⟨10.1103/PhysRevLett.113.121101⟩. ⟨in2p3-01066019⟩

Share

Metrics

Record views

862

Files downloads

16