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Adriani O, Barbarino GC, Bazilevskaya GA, et al. Cosmic-ray positron energy spectrum measured by PAMELA. Phys Rev Lett. 2013;111(8):081102doi: 10.1103/PhysRevLett.111.081102.
Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bianco, A., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergé, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S. J., Stockton, J. C., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., & Zverev, V. G. (2013). Cosmic-ray positron energy spectrum measured by PAMELA. Physical review letters, 111(8), 081102. https://doi.org/10.1103/PhysRevLett.111.081102
Adriani, O, et al. "Cosmic-ray positron energy spectrum measured by PAMELA." Physical review letters vol. 111,8 (2013): 081102. doi: https://doi.org/10.1103/PhysRevLett.111.081102
Adriani O, Barbarino GC, Bazilevskaya GA, Bellotti R, Bianco A, Boezio M, Bogomolov EA, Bongi M, Bonvicini V, Bottai S, Bruno A, Cafagna F, Campana D, Carbone R, Carlson P, Casolino M, Castellini G, De Donato C, De Santis C, De Simone N, Di Felice V, Formato V, Galper AM, Karelin AV, Koldashov SV, Koldobskiy SA, Krutkov SY, Kvashnin AN, Leonov A, Malakhov V, Marcelli L, Martucci M, Mayorov AG, Menn W, Mergé M, Mikhailov VV, Mocchiutti E, Monaco A, Mori N, Munini R, Osteria G, Palma F, Papini P, Pearce M, Picozza P, Pizzolotto C, Ricci M, Ricciarini SB, Rossetto L, Sarkar R, Scotti V, Simon M, Sparvoli R, Spillantini P, Stochaj SJ, Stockton JC, Stozhkov YI, Vacchi A, Vannuccini E, Vasilyev GI, Voronov SA, Yurkin YT, Zampa G, Zampa N, Zverev VG. Cosmic-ray positron energy spectrum measured by PAMELA. Phys Rev Lett. 2013 Aug 23;111(8):081102. doi: 10.1103/PhysRevLett.111.081102. Epub 2013 Aug 19. PMID: 24010424.
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Phys Rev Lett. 2013 Aug 23;111(8):081102. doi: 10.1103/PhysRevLett.111.081102. Epub 2013 Aug 19.

Cosmic-ray positron energy spectrum measured by PAMELA.

Physical review letters

O Adriani, G C Barbarino, G A Bazilevskaya, R Bellotti, A Bianco, M Boezio, E A Bogomolov, M Bongi, V Bonvicini, S Bottai, A Bruno, F Cafagna, D Campana, R Carbone, P Carlson, M Casolino, G Castellini, C De Donato, C De Santis, N De Simone, V Di Felice, V Formato, A M Galper, A V Karelin, S V Koldashov, S A Koldobskiy, S Y Krutkov, A N Kvashnin, A Leonov, V Malakhov, L Marcelli, M Martucci, A G Mayorov, W Menn, M Mergé, V V Mikhailov, E Mocchiutti, A Monaco, N Mori, R Munini, G Osteria, F Palma, P Papini, M Pearce, P Picozza, C Pizzolotto, M Ricci, S B Ricciarini, L Rossetto, R Sarkar, V Scotti, M Simon, R Sparvoli, P Spillantini, S J Stochaj, J C Stockton, Y I Stozhkov, A Vacchi, E Vannuccini, G I Vasilyev, S A Voronov, Y T Yurkin, G Zampa, N Zampa, V G Zverev

Affiliations

  1. Department of Physics, University of Florence, I-50019 Sesto Fiorentino, Florence, Italy and INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence, Italy.

PMID: 24010424 DOI: 10.1103/PhysRevLett.111.081102

Abstract

Precision measurements of the positron component in the cosmic radiation provide important information about the propagation of cosmic rays and the nature of particle sources in our Galaxy. The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray positron flux and fraction that extends previously published measurements up to 300 GeV in kinetic energy. The combined measurements of the cosmic-ray positron energy spectrum and fraction provide a unique tool to constrain interpretation models. During the recent solar minimum activity period from July 2006 to December 2009, approximately 24,500 positrons were observed. The results cannot be easily reconciled with purely secondary production, and additional sources of either astrophysical or exotic origin may be required.

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