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Antiprotons of Galactic Cosmic Radiation in the PAMELA Experiment

A. G. Mayorov,O. Adriani,G. Barbarino,G. A. Bazilevskaia,R. Belotti,M. Boezio,E. A. Bogomolov,L. Bonechi,M. Bongi,V. Bonvicini,S. V. Borisov,S. Bottai,A. Bruno,F. Cafagna,D. Campana,R. Carbone,P. Carlson,M. Casolino,G. Castellini,L. Consiglio,I. A. Danilchenko,M. P. De Pascale,C. De Santis,N. De Simone,V. Di Felice,A. M. Galper,W. Gillard,L. A. Grishantseva,G. Jerse,A. V. Karelin,M. D. Kheimits,S. V. Koldashov,S. A. Koldobskiy,S. Yu. Krutkov,A. N. Kvashnin,A. A. Leonov,V. V. Malakhov,V. Malvezzi,L. Marcelli,W. Menn,V. V. Mikhailov,E. Mocchiutti,A. Monaco,N. Mori,N. N. Nikonov,G. Osteria,F. Palma,P. Papini,M. Pearce,P. Picozza, S. Pizzolotto,M. Ricci,S. Ricciarini,L. Rozetto,M. F. Runtso,R. Sarkar,M. Simon,R. Sparvoli,P. Spilantini,Yu. I. Stozhkov,A. Vacchi,E. Vannuccini,G. I. Vasilyev,S. A. Voronov,J. Wu,Yu. T. Yurkin,G. Zampa,N. Zampa,V. G. Zverev

Bulletin of the Russian Academy of Sciences Physics（2013）

Cited 2|Views59
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Abstract
A method for antiproton selection against a background of electrons, based on a mathematical model of data classification using variations in interparticle interaction in a calorimeter, and a method for excluding events accompanied by scattering in the inner detectors of a tracking system (which result in errors in the measured trajectory’s curvature and charge sign) from analysis are discussed in this paper. Antiproton spectra and antiproton/proton flux ratio at energies of 0.06 to 350 GeV with statistics of events surpassing those in [1] are obtained. The results can be used to create models for the generation and distribution of particles in the Galaxy, and for searching and studying the nature of hypothetical dark matter particles.
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Key words
Dark Matter,Flux Ratio,Geomagnetic Cutoff Rigidity,Galactic Cosmic Radiation,PAMELA Experiment
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