PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy.

Authors :: Adriani O
Barbarino GC
Bazilevskaya GA
Bellotti R
Boezio M
Bogomolov EA
Bonechi L
Bongi M
Bonvicini V
Borisov S
Bottai S
Bruno A
Cafagna F
Campana D
Carbone R
Carlson P
Casolino M
Castellini G
Consiglio L
De Pascale MP
De Santis C
De Simone N
Di Felice V
Galper AM
Gillard W
Grishantseva L
Hofverberg P
Jerse G
Karelin AV
Koldashov SV
Krutkov SY
Kvashnin AN
Leonov A
Malvezzi V
Marcelli L
Mayorov AG
Menn W
Mikhailov VV
Mocchiutti E
Monaco A
Mori N
Nikonov N
Osteria G
Papini P
Pearce M
Picozza P
Pizzolotto C
Ricci M
Ricciarini SB
Rossetto L
Simon M
Sparvoli R
Spillantini P
Stozhkov YI
Vacchi A
Vannuccini E
Vasilyev G
Voronov SA
Wu J
Yurkin YT
Zampa G
Zampa N
Zverev VG
Source :: Physical review letters [Phys Rev Lett] 2010 Sep 17; Vol. 105 (12), pp. 121101. Date of Electronic Publication: 2010 Sep 13.
Publication Year :: 2010
Abstract: The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy. During 850 days of data acquisition approximately 1500 antiprotons were observed. The measurements are consistent with purely secondary production of antiprotons in the Galaxy. More precise secondary production models are required for a complete interpretation of the results.

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