%0 Journal Article
%A Arganda, E.
%A Arqueros Martínez, Fernando
%A Blanco Ramos, Francisco
%A García Pinto, Diego
%A Ortiz Ramis, Montserrat
%A Rosado Vélez, Jaime
%A Vázquez Peñas, José Ramón
%T Measurement of the proton-air cross section at root s=57 TeV with the Pierre Auger Observatory
%D 2012
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/44723
%X We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505 +/- 22(stat)(-36)(+28)(syst)] mb is found.
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