[1] Tokai Univ, Dept Phys, 4-1-1 Kita Kaname, Hiratsuka, Kanagawa 2591292, Japan
[2] Univ Tokyo, Inst Cosm Ray Res, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778582, Japan
[3] Univ Barcelona, IEEC UB, Inst Ciencies Cosmos, Dept Fis Quant & Astrofis, Marti & Franques 1, Barcelona 08028, Spain
[4] CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, Granada 18008, Spain
[5] Univ Complutense Madrid, Grp Elect, Ave Complutense S-N, Madrid 28040, Spain
[6] INAF, Osservatorio Astron Roma, Via Frascati 33, I-00040 Monte Porzio Catone, Italy
[7] Ist Nazl Fis Nucl, Sez Napoli, Via Cintia,Ed G, I-80126 Naples, Italy
[8] Max Planck Inst Phys & Astrophys, Fohringer Ring 6, D-80805 Munich, Germany
[9] Ist Nazl Fis Nucl, Sez Padova, Via Marzolo 8, I-35131 Padua, Italy
[10] Univ Padua, Via Marzolo 8, I-35131 Padua, Italy
[11] Barcelona Inst Sci & Technol, IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain
[12] Univ Savoie Mt Blanc, CNRS, Lab Annecy Phys Particules, IN2P3, F-74000 Annecy, France
[13] Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany
[14] Univ Tokyo, Grad Sch Sci, 7-3-1 Hongo,Bunkyo Ku, Tokyo 1130033, Japan
[15] Univ Complutense Madrid, EMFTEL Dept, Plaza Ciencias,1 Ciudad Univ, Madrid 28040, Spain
[16] Univ Complutense Madrid, IPARCOS, Plaza Ciencias,1 Ciudad Univ, Madrid 28040, Spain
[17] INAF, Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
[18] Ctr Brasileiro Pesquisas Fis, Rua Xavier Sigaud 150, BR-22290180 Rio De Janeiro, RJ, Brazil
[19] Univ La Laguna, Inst Astrofis Canarias, C Via Lactea S-N, San Cristobal la Laguna 38205, Santa Cruz De T, Spain
[20] Univ La Laguna, Dept Astrofis, C Via Lactea S-N, San Cristobal la Laguna 38205, Santa Cruz De T, Spain
[21] CIEMAT, Avda Complutense 40, Madrid 28040, Spain
[22] TU Dortmund Univ, Dept Phys, Otto Hahn Str 4, D-44227 Dortmund, Germany
[23] Ist Nazl Fis Nucl, Sez Bari, Via Orabona 4, I-70124 Bari, Italy
[24] Politecn Bari, Via Orabona 4, I-70124 Bari, Italy
[25] INAF, Osservatorio Astron Brera, Via Brera 28, I-20121 Milan, Italy
[26] Ist Nazl Fis Nucl, Sez Trieste, Via Sci 206, I-33100 Udine, Italy
[27] Univ Udine, Via Sci 206, I-33100 Udine, Italy
[28] Univ Geneva, Dept Phys Nucl & Corpusculaire, 24 Quai Ernest Ansernet, CH-1211 Geneva 4, Switzerland
[29] Ist Nazl Fis Nucl, Sez Catania, Via S Sofia 64, I-95123 Catania, Italy
[30] INAF, IAPS, Via Fosso Cavaliere 100, I-00133 Rome, Italy
[31] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France
[32] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy
[33] Palacky Univ Olomouc, Fac Sci, 17 Listopadu 1192-12, Olomouc 77146, Czech Republic
[34] Port Informacio Cient, Edifici D,Carrer Albareda, Bellaterrra 08193, Cerdanyola Del, Spain
[35] Ist Nazl Fis Nucl, Sez Bari, Via Orabona 4, I-70126 Bari, Italy
[36] Univ Bari, Via Orabona 4, I-70126 Bari, Italy
[37] Univ Rijeka, Dept Phys, Radmile Matejcic 2, Rijeka 51000, Croatia
[38] Univ Wurzburg, Inst Theoret Phys & Astrophys, Campus Hubland Nord,Emil Fischer Str 31, D-97074 Wurzburg, Germany
[39] Ruhr Univ Bochum, Lehrstuhl Plasma Astroteilchenphys 4, Inst Theoret Phys, Univ Str 150, D-44801 Bochum, Germany
[40] Ist Nazl Fis Nucl, Sez Roma La Sapienza, Ple Aldo Moro 2, I-00185 Rome, Italy
[41] Univ Tokyo, Int Res Lab, CNRS, ILANCE, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778582, Japan
[42] Hiroshima Univ, Grad Sch Adv Sci & Engn, Phys Program, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan
[43] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy
[44] Univ Lodz, Fac Phys & Appl Informat, Ul Pomorska 149-153, PL-90236 Lodz, Poland
[45] Univ Split, FESB, R Boskovica 32, Split 21000, Croatia
[46] Yamagata Univ, Dept Phys, 1-4-12 Kojirakawa Machi, Yamagata 9908560, Japan
[47] Josip Juraj Strossmayer Univ Osijek, Dept Phys, Trg Ljudevita Gaja 6, Osijek 31000, Croatia
[48] Univ Aquila, Ist Nazl Fis Nucl, Dipartimento Sci Fis & Chim, Via Vetoio 1,Viale Crispi 7, I-67100 Laquila, Italy
[49] Gran Sasso Sci Inst, Via Vetoio 1,Viale Crispi 7, I-67100 Laquila, Italy
[50] Kitashirakawa Oiwakecho, Sakyo Ward, Kyoto 6068502, Japan