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
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 s...
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| Veröffentlicht in: | Physical review letters 2014-09, Vol.113 (12), p.121101-121101, Article 121101 |
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| creator | Accardo, L Aguilar, M Aisa, D Alpat, B Alvino, A Ambrosi, G Andeen, K Arruda, L Attig, N Azzarello, P Bachlechner, A Barao, F Barrau, A Barrin, L Bartoloni, A Basara, L Battarbee, M Battiston, R Bazo, J Becker, U Behlmann, M Beischer, B Berdugo, J Bertucci, B Bigongiari, G Bindi, V Bizzaglia, S Bizzarri, M Boella, G de Boer, W Bollweg, K Bonnivard, V Borgia, B Borsini, S Boschini, M J Bourquin, M Burger, J Cadoux, F Cai, X D Capell, M Caroff, S Carosi, G Casaus, J Cascioli, V Castellini, G Cernuda, I Cerreta, D Cervelli, F Chae, M J Chang, Y H Chen, A I Chen, H Cheng, G M Chen, H S Cheng, L Chikanian, A Chou, H Y Choumilov, E Choutko, V Chung, C H Cindolo, F Clark, C Clavero, R Coignet, G Consolandi, C Contin, A Corti, C Coste, B Cui, Z Dai, M Delgado, C Della Torre, S Demirköz, M B Derome, L Di Falco, S Di Masso, L Dimiccoli, F Díaz, C von Doetinchem, P Du, W J Duranti, M D'Urso, D Eline, A Eppling, F J Eronen, T Fan, Y Y Farnesini, L Feng, J Fiandrini, E Fiasson, A Finch, E Fisher, P Galaktionov, Y Gallucci, G García, B García-López, R Gast, H Gebauer, I Gervasi, M Ghelfi, A |
| description | 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. |
| doi_str_mv | 10.1103/PhysRevLett.113.121101 |
| format | Article |
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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.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.113.121101</identifier><identifier>PMID: 25279616</identifier><language>eng</language><publisher>United States: American Physical Society</publisher><subject>Alpha Magnetic Spectrometer ; Astrophysics ; Cosmology and Extra-Galactic Astrophysics ; Energy measurement ; International Space Station ; Physics ; Positrons ; Primary cosmic rays ; Sciences of the Universe ; Statistics</subject><ispartof>Physical review letters, 2014-09, Vol.113 (12), p.121101-121101, Article 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Collaboration</creatorcontrib><title>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</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>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.</description><subject>Alpha Magnetic Spectrometer</subject><subject>Astrophysics</subject><subject>Cosmology and Extra-Galactic Astrophysics</subject><subject>Energy measurement</subject><subject>International Space Station</subject><subject>Physics</subject><subject>Positrons</subject><subject>Primary cosmic rays</subject><subject>Sciences of the 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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</title><author>Accardo, L ; Aguilar, M ; Aisa, D ; Alpat, B ; Alvino, A ; Ambrosi, G ; Andeen, K ; Arruda, L ; Attig, N ; Azzarello, P ; Bachlechner, A ; Barao, F ; Barrau, A ; Barrin, L ; Bartoloni, A ; Basara, L ; Battarbee, M ; Battiston, R ; Bazo, J ; Becker, U ; Behlmann, M ; Beischer, B ; Berdugo, J ; Bertucci, B ; Bigongiari, G ; Bindi, V ; Bizzaglia, S ; Bizzarri, M ; Boella, G ; de Boer, W ; Bollweg, K ; Bonnivard, V ; Borgia, B ; Borsini, S ; Boschini, M J ; Bourquin, M ; Burger, J ; Cadoux, F ; Cai, X D ; Capell, M ; Caroff, S ; Carosi, G ; Casaus, J ; Cascioli, V ; Castellini, G ; Cernuda, I ; Cerreta, D ; Cervelli, F ; Chae, M J ; Chang, Y H ; Chen, A I ; Chen, H ; Cheng, G M ; Chen, H S ; Cheng, L ; Chikanian, A ; Chou, H Y ; Choumilov, E ; Choutko, V ; Chung, C H ; Cindolo, F ; Clark, C ; Clavero, R ; Coignet, G ; Consolandi, C ; Contin, A ; Corti, C ; Coste, B ; Cui, Z ; Dai, M ; Delgado, C ; Della Torre, S ; Demirköz, M B ; Derome, L ; Di Falco, S ; Di Masso, L ; Dimiccoli, F ; Díaz, C ; von Doetinchem, P ; Du, W J ; Duranti, M ; D'Urso, D ; Eline, A ; Eppling, F J ; Eronen, T ; Fan, Y Y ; Farnesini, L ; Feng, J ; Fiandrini, E ; Fiasson, A ; Finch, E ; Fisher, P ; Galaktionov, Y ; Gallucci, G ; García, B ; García-López, R ; Gast, H ; Gebauer, I ; Gervasi, M ; Ghelfi, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c491t-56f919c17478080cf32688ed221cc61266c951d7b7e840c864463bb4af63fed33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Alpha Magnetic Spectrometer</topic><topic>Astrophysics</topic><topic>Cosmology and Extra-Galactic Astrophysics</topic><topic>Energy measurement</topic><topic>International Space Station</topic><topic>Physics</topic><topic>Positrons</topic><topic>Primary cosmic rays</topic><topic>Sciences of the Universe</topic><topic>Statistics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Accardo, L</creatorcontrib><creatorcontrib>Aguilar, M</creatorcontrib><creatorcontrib>Aisa, D</creatorcontrib><creatorcontrib>Alpat, B</creatorcontrib><creatorcontrib>Alvino, A</creatorcontrib><creatorcontrib>Ambrosi, G</creatorcontrib><creatorcontrib>Andeen, K</creatorcontrib><creatorcontrib>Arruda, L</creatorcontrib><creatorcontrib>Attig, N</creatorcontrib><creatorcontrib>Azzarello, P</creatorcontrib><creatorcontrib>Bachlechner, A</creatorcontrib><creatorcontrib>Barao, F</creatorcontrib><creatorcontrib>Barrau, A</creatorcontrib><creatorcontrib>Barrin, L</creatorcontrib><creatorcontrib>Bartoloni, A</creatorcontrib><creatorcontrib>Basara, L</creatorcontrib><creatorcontrib>Battarbee, M</creatorcontrib><creatorcontrib>Battiston, R</creatorcontrib><creatorcontrib>Bazo, J</creatorcontrib><creatorcontrib>Becker, U</creatorcontrib><creatorcontrib>Behlmann, M</creatorcontrib><creatorcontrib>Beischer, B</creatorcontrib><creatorcontrib>Berdugo, J</creatorcontrib><creatorcontrib>Bertucci, B</creatorcontrib><creatorcontrib>Bigongiari, G</creatorcontrib><creatorcontrib>Bindi, V</creatorcontrib><creatorcontrib>Bizzaglia, S</creatorcontrib><creatorcontrib>Bizzarri, M</creatorcontrib><creatorcontrib>Boella, G</creatorcontrib><creatorcontrib>de Boer, W</creatorcontrib><creatorcontrib>Bollweg, K</creatorcontrib><creatorcontrib>Bonnivard, V</creatorcontrib><creatorcontrib>Borgia, B</creatorcontrib><creatorcontrib>Borsini, S</creatorcontrib><creatorcontrib>Boschini, M J</creatorcontrib><creatorcontrib>Bourquin, M</creatorcontrib><creatorcontrib>Burger, J</creatorcontrib><creatorcontrib>Cadoux, F</creatorcontrib><creatorcontrib>Cai, X D</creatorcontrib><creatorcontrib>Capell, M</creatorcontrib><creatorcontrib>Caroff, S</creatorcontrib><creatorcontrib>Carosi, G</creatorcontrib><creatorcontrib>Casaus, J</creatorcontrib><creatorcontrib>Cascioli, V</creatorcontrib><creatorcontrib>Castellini, G</creatorcontrib><creatorcontrib>Cernuda, I</creatorcontrib><creatorcontrib>Cerreta, D</creatorcontrib><creatorcontrib>Cervelli, F</creatorcontrib><creatorcontrib>Chae, M J</creatorcontrib><creatorcontrib>Chang, Y H</creatorcontrib><creatorcontrib>Chen, A I</creatorcontrib><creatorcontrib>Chen, H</creatorcontrib><creatorcontrib>Cheng, G M</creatorcontrib><creatorcontrib>Chen, H S</creatorcontrib><creatorcontrib>Cheng, L</creatorcontrib><creatorcontrib>Chikanian, A</creatorcontrib><creatorcontrib>Chou, H Y</creatorcontrib><creatorcontrib>Choumilov, E</creatorcontrib><creatorcontrib>Choutko, V</creatorcontrib><creatorcontrib>Chung, C H</creatorcontrib><creatorcontrib>Cindolo, F</creatorcontrib><creatorcontrib>Clark, C</creatorcontrib><creatorcontrib>Clavero, R</creatorcontrib><creatorcontrib>Coignet, G</creatorcontrib><creatorcontrib>Consolandi, C</creatorcontrib><creatorcontrib>Contin, A</creatorcontrib><creatorcontrib>Corti, C</creatorcontrib><creatorcontrib>Coste, B</creatorcontrib><creatorcontrib>Cui, Z</creatorcontrib><creatorcontrib>Dai, M</creatorcontrib><creatorcontrib>Delgado, C</creatorcontrib><creatorcontrib>Della Torre, S</creatorcontrib><creatorcontrib>Demirköz, M B</creatorcontrib><creatorcontrib>Derome, L</creatorcontrib><creatorcontrib>Di Falco, S</creatorcontrib><creatorcontrib>Di Masso, L</creatorcontrib><creatorcontrib>Dimiccoli, F</creatorcontrib><creatorcontrib>Díaz, C</creatorcontrib><creatorcontrib>von Doetinchem, P</creatorcontrib><creatorcontrib>Du, W J</creatorcontrib><creatorcontrib>Duranti, M</creatorcontrib><creatorcontrib>D'Urso, D</creatorcontrib><creatorcontrib>Eline, A</creatorcontrib><creatorcontrib>Eppling, F J</creatorcontrib><creatorcontrib>Eronen, T</creatorcontrib><creatorcontrib>Fan, Y Y</creatorcontrib><creatorcontrib>Farnesini, L</creatorcontrib><creatorcontrib>Feng, J</creatorcontrib><creatorcontrib>Fiandrini, E</creatorcontrib><creatorcontrib>Fiasson, A</creatorcontrib><creatorcontrib>Finch, E</creatorcontrib><creatorcontrib>Fisher, P</creatorcontrib><creatorcontrib>Galaktionov, Y</creatorcontrib><creatorcontrib>Gallucci, G</creatorcontrib><creatorcontrib>García, B</creatorcontrib><creatorcontrib>García-López, R</creatorcontrib><creatorcontrib>Gast, H</creatorcontrib><creatorcontrib>Gebauer, I</creatorcontrib><creatorcontrib>Gervasi, M</creatorcontrib><creatorcontrib>Ghelfi, A</creatorcontrib><creatorcontrib>AMS Collaboration</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Accardo, L</au><au>Aguilar, M</au><au>Aisa, D</au><au>Alpat, B</au><au>Alvino, A</au><au>Ambrosi, G</au><au>Andeen, K</au><au>Arruda, L</au><au>Attig, N</au><au>Azzarello, P</au><au>Bachlechner, A</au><au>Barao, F</au><au>Barrau, A</au><au>Barrin, L</au><au>Bartoloni, A</au><au>Basara, L</au><au>Battarbee, M</au><au>Battiston, R</au><au>Bazo, J</au><au>Becker, U</au><au>Behlmann, M</au><au>Beischer, B</au><au>Berdugo, J</au><au>Bertucci, B</au><au>Bigongiari, G</au><au>Bindi, V</au><au>Bizzaglia, S</au><au>Bizzarri, M</au><au>Boella, G</au><au>de Boer, W</au><au>Bollweg, K</au><au>Bonnivard, V</au><au>Borgia, B</au><au>Borsini, S</au><au>Boschini, M J</au><au>Bourquin, M</au><au>Burger, J</au><au>Cadoux, F</au><au>Cai, X D</au><au>Capell, M</au><au>Caroff, S</au><au>Carosi, G</au><au>Casaus, J</au><au>Cascioli, V</au><au>Castellini, G</au><au>Cernuda, I</au><au>Cerreta, D</au><au>Cervelli, F</au><au>Chae, M J</au><au>Chang, Y H</au><au>Chen, A I</au><au>Chen, H</au><au>Cheng, G M</au><au>Chen, H S</au><au>Cheng, L</au><au>Chikanian, A</au><au>Chou, H Y</au><au>Choumilov, E</au><au>Choutko, V</au><au>Chung, C H</au><au>Cindolo, F</au><au>Clark, C</au><au>Clavero, R</au><au>Coignet, G</au><au>Consolandi, C</au><au>Contin, A</au><au>Corti, C</au><au>Coste, B</au><au>Cui, Z</au><au>Dai, M</au><au>Delgado, C</au><au>Della Torre, S</au><au>Demirköz, M B</au><au>Derome, L</au><au>Di Falco, S</au><au>Di Masso, L</au><au>Dimiccoli, F</au><au>Díaz, C</au><au>von Doetinchem, P</au><au>Du, W J</au><au>Duranti, M</au><au>D'Urso, D</au><au>Eline, A</au><au>Eppling, F J</au><au>Eronen, T</au><au>Fan, Y Y</au><au>Farnesini, L</au><au>Feng, J</au><au>Fiandrini, E</au><au>Fiasson, A</au><au>Finch, E</au><au>Fisher, P</au><au>Galaktionov, Y</au><au>Gallucci, G</au><au>García, B</au><au>García-López, R</au><au>Gast, H</au><au>Gebauer, I</au><au>Gervasi, M</au><au>Ghelfi, A</au><aucorp>AMS Collaboration</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>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</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2014-09-19</date><risdate>2014</risdate><volume>113</volume><issue>12</issue><spage>121101</spage><epage>121101</epage><pages>121101-121101</pages><artnum>121101</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><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.</abstract><cop>United States</cop><pub>American Physical Society</pub><pmid>25279616</pmid><doi>10.1103/PhysRevLett.113.121101</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0001-6122-0611</orcidid><orcidid>https://orcid.org/0000-0002-8657-6742</orcidid><orcidid>https://orcid.org/0000-0003-3842-8531</orcidid><orcidid>https://orcid.org/0000-0002-1103-130X</orcidid><orcidid>https://orcid.org/0000-0001-5913-0596</orcidid><orcidid>https://orcid.org/0000-0001-6725-5399</orcidid><orcidid>https://orcid.org/0000-0003-1670-2966</orcidid><orcidid>https://orcid.org/0000-0002-9394-2392</orcidid><orcidid>https://orcid.org/0000-0001-8040-7852</orcidid><orcidid>https://orcid.org/0000-0002-5331-0606</orcidid><orcidid>https://orcid.org/0000-0003-4744-9748</orcidid><orcidid>https://orcid.org/0000-0003-1841-9486</orcidid><orcidid>https://orcid.org/0000-0002-1297-8925</orcidid><orcidid>https://orcid.org/0000-0002-9704-6472</orcidid><orcidid>https://orcid.org/0000-0003-4365-3282</orcidid><orcidid>https://orcid.org/0000-0001-5260-658X</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2014-09, Vol.113 (12), p.121101-121101, Article 121101 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1181061 |
| source | American Physical Society Journals |
| subjects | Alpha Magnetic Spectrometer Astrophysics Cosmology and Extra-Galactic Astrophysics Energy measurement International Space Station Physics Positrons Primary cosmic rays Sciences of the Universe Statistics |
| title | 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 |
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