Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>1</mml:mn><mml:msup><mml:mrow><mml:mn>0</mml:mn></mml:mrow><mml:mrow><mml:mn>17.8</mml:mn></mml:mrow></mml:msup><mml:mtext>  </mml:mtext><mml:mi>eV</mml:mi></mml:mrow></mml:math>

A. Aab(Radboud University Nijmegen), I. M. Brancus(Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering), Alina Mihaela Badescu(Consejo Nacional de Investigaciones Científicas y Técnicas), E. J. Ahn(Fermi National Accelerator Laboratory), I. F. M. Albuquerque(Universidade de São Paulo), F. Arqueros(Universidad Complutense de Madrid), M. Ave(University of Chicago), I. Allekotte(Pierre Auger Observatory), Rafael Alves Batista(Universidade de São Paulo), Jaime Álvarez-Muñiz(Universidade de Santiago de Compostela), F. Blanco(Universidad Complutense de Madrid), Denise Boncioli(University of Rome Tor Vergata), P. Abreu(Pierre Auger Observatory), C. Aramo(Pierre Auger Observatory), A. Aminaei(Radboud University Nijmegen), H. Asorey(Pierre Auger Observatory), P. Assis(Pierre Auger Observatory), X. Bertou(Bariloche Atomic Centre), Peter L. Biermann(University of Alabama), S. Andringa(Pierre Auger Observatory), K. B. Barber(The University of Adelaide), C. Bonifazi(Universidade Federal do Rio de Janeiro), J. J. Beatty(The Ohio State University), M. Aglietta(Osservatorio Astrofisico di Torino), Jose A. Bellido(Pierre Auger Observatory), V. Aranda(Universidad Complutense de Madrid), C. Bleve(Pierre Auger Observatory), M. Avenier(Centre National de la Recherche Scientifique), J. Brack(University of Colorado Boulder), J. Alvarez Castillo(Consejo Nacional de Investigaciones Científicas y Técnicas), Nataliia Borodai(Polish Academy of Sciences), K. H. Becker(University of Wuppertal), C. Baus(Karlsruhe Institute of Technology), C. Bérat(Pierre Auger Observatory), M. Ambrosio(Pierre Auger Observatory), J. Allen(Pierre Auger Observatory), P. Allison(Pierre Auger Observatory), J. Bäuml(Karlsruhe Institute of Technology), I. Al Samarai(Centre National de la Recherche Scientifique), A. Almela(National Technological University), N. Awal(New York University), Luis A. Anchordoqui(Pierre Auger Observatory), G. Ávila(Pierre Auger Observatory), P. Billoir(Pierre Auger Observatory), J. Aublin(Centre National de la Recherche Scientifique), M. E. Bertaina(Consejo Nacional de Investigaciones Científicas y Técnicas), S. G. Blaess(The University of Adelaide), H. Blümer(Pierre Auger Observatory), R. Bonino(Istituto Nazionale di Fisica Nucleare, Sezione di Torino)
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
December 31, 2014
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