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Document type:
journal article 
Author(s):
Abreu, P; Aglietta, M; Ahn, EJ; Albuquerque, IF; Allard, D; Allekotte, I; Allen, J; Allison, P; Almeda, A; Alvarez Castillo, J; Alvarez-Muñiz, J; Ambrosio, M; Aminaei, A; Anchordoqui, L; Andringa, S; Anti?i?, T; Aramo, C; Arganda, E; Arqueros, F; Asorey, H; Assis, P; Aublin, J; Ave, M; Avenier, M; Avila, G; Bäcker, T; Balzer, M; Barber, KB; Barbosa, AF; Bardenet, R; Barroso, SL; Baughman, B; Bäuml, J; Beatty, JJ; Becker, BR; Becker, KH; Bellétoile, A; Bellido, JA; Benzvi, S; Berat, C; Bertou, X;...    »
 
Title:
Measurement of the proton-air cross section at ?s=57 TeV with the Pierre Auger Observatory. 
Abstract:
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. 
Journal title abbreviation:
Phys Rev Lett 
Year:
2012 
Journal volume:
109 
Journal issue:
Pages contribution:
062002 
Language:
eng 
Print-ISSN:
0031-9007 
TUM Institution:
Klinik und Poliklinik für Psychiatrie und Psychotherapie