标题: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
作者:Aguilar, M.; Alberti, G.; Alpat, B.; Alvino, A.; Ambrosi, G.; Andeen, K.; Anderhub, H.; Arruda, L.; Azzarello, P.; Bachlechner, A.; 更多
作者机构:[Basili, A.; Becker, R.; Becker, U.; Behlmann, M.; Berges, P.; Burger, J.; Cai, X. D.; Capell, M.; Chen, A. I.; Chen, H.; Choumilov, E.; Choutko, V.; 更多
通讯作者:Aguilar, M.
通讯作者地址:[Aguilar, M]CIEMAT, Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain.
来源:PHYSICAL REVIEW LETTERS
出版年:2013
卷:110
期:14
DOI:10.1103/PhysRevLett.110.141102
摘要: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
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:534
Scopus被引频次:591
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876003828&doi=10.1103%2fPhysRevLett.110.141102&partnerID=40&md5=7a40f9dbce9a0eb57a9d1fc49bb9a79c
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