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.
نویسندگان
- L Accardo
- M Aguilar
- D Aisa
- B Alpat
- A Alvino
- G Ambrosi
- K Andeen
- L Arruda
- N Attig
- P Azzarello
- A Bachlechner
- F Barao
- A Barrau
- L Barrin
- A Bartoloni
- L Basara
- M Battarbee
- R Battiston
- J Bazo
- U Becker
- M Behlmann
- B Beischer
- J Berdugo
- B Bertucci
- G Bigongiari
- V Bindi
- S Bizzaglia
- M Bizzarri
- G Boella
- W de Boer
- K Bollweg
- V Bonnivard
- B Borgia
- S Borsini
- M J Boschini
- M Bourquin
- J Burger
- F Cadoux
- X D Cai
- M Capell
- S Caroff
- G Carosi
- J Casaus
- V Cascioli
- G Castellini
- I Cernuda
- D Cerreta
- F Cervelli
- M J Chae
- Y H Chang
- A I Chen
- H Chen
- G M Cheng
- 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
- C Consolandi
- A Contin
- C Corti
- B Coste
- Z Cui
- M Dai
- C Delgado
- S Della Torre
- M B Demirköz
- L Derome
- 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
- E Finch
- P Fisher
- Y Galaktionov
- G Gallucci
- B García
- R García-López
- H Gast
- I Gebauer
- M Gervasi
- A Ghelfi
- W Gillard
- F Giovacchini
- P Goglov
- J Gong
- C Goy
- 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
- J 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
- 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
- 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
- H 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
- G Martínez
- N Masi
- F Massera
- D Maurin
- 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
- E Postaci
- A Putze
- L Quadrani
- X M Qi
- P G Rancoita
- D Rapin
- J S Ricol
- I Rodríguez
- S Rosier-Lees
- 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
- D Tescaro
- Samuel C C Ting
- S M Ting
- N Tomassetti
- J Torsti
- C Türkoğlu
- T Urban
- V Vagelli
- E Valente
- C Vannini
- E Valtonen
- S Vaurynovich
- M Vecchi
- M Velasco
- J P Vialle
- 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
- W 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
- Z Zhang
- Z M Zheng
- F Zhou
- H L Zhuang
- V Zhukov
- A Zichichi
- N Zimmermann
- P Zuccon
- C Zurbach
چکیده
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.
منابع مشابه
New limits on dark matter annihilation from Alpha Magnetic Spectrometer cosmic ray positron data.
The Alpha Magnetic Spectrometer experiment onboard the International Space Station has recently provided cosmic ray electron and positron data with unprecedented precision in the range from 0.5 to 350 GeV. The observed rise in the positron fraction at energies above 10 GeV remains unexplained, with proposed solutions ranging from local pulsars to TeV-scale dark matter. Here, we make use of this...
متن کاملAstroparticle Physics with Ams02
The Alpha Magnetic Spectrometer (AMS02) experiment will be installed in 2009 on the International Space Station (ISS) for an operational period of at least three years. The purpose of AMS02 experiment is to perform accurate, high statistics, long duration measurements in space of charged cosmic rays in rigidity range from 1 GV to 3 TV and of high energy photons up to few hundred of GeV. In this...
متن کاملar X iv : 0 71 0 . 09 84 v 1 [ as tr o - ph ] 4 O ct 2 00 7 Astrophysics with the AMS - 02 experiment
The Alpha Magnetic Spectrometer (AMS), whose final version AMS-02 is to be installed on the International Space Station (ISS) for at least 3 years, is a detector designed to measure charged cosmic ray spectra with energies up to the TeV region and with high energy photon detection capability up to a few hundred GeV, using state-of-the-art particle identification techniques. Following the succes...
متن کاملAstrophysics with the AMS-02 experiment
The Alpha Magnetic Spectrometer (AMS), whose final version AMS-02 is to be installed on the International Space Station (ISS) for at least 3 years, is a detector designed to measure charged cosmic ray spectra with energies up to the TeV region and with high energy photon detection capability up to a few hundred GeV, using state-of-the-art particle identification techniques. Following the succes...
متن کاملerenkov angle and charge reconstruction with the RICH detector of the AMS experiment
The Alpha Magnetic Spectrometer (AMS) experiment to be installed on the International Space Station (ISS) will be equipped with a proximity focusing Ring ImagingČerenkov (RICH) detector, for measurements of particle electric charge and velocity. In this note, two possible methods for reconstructing thě Cerenkov angle and the electric charge with the RICH, are discussed. A Likelihood method for ...
متن کاملParticle identification with the AMS-02 RICH detector: search for dark matter with antideuterons
The Alpha Magnetic Spectrometer (AMS), whose final version AMS-02 is to be installed on the International Space Station (ISS) for at least 3 years, is a detector designed to measure charged cosmic ray spectra with energies up to the TeV region and with high energy photon detection capability up to a few hundred GeV, using state-of-the art particle identification techniques. It is equipped with ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 113 12 شماره
صفحات -
تاریخ انتشار 2014