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 de- tail. Analysing the tail of the distribution of the shower maxima, a proton-air cross-section of 505 ± 22(stat) +28 (sys) mb is found
Measurement of the proton-air cross-section at sqrt(s) = 57 TeV with the Pierre Auger Observatory / Guarino, Fausto; Valore, Laura; Aramo, Carla; M., Ambrosio; D'Urso, Domenico; The Pierre Auger, Collaboration. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 109:062002(2012), pp. 062002-1-062002-9. [10.1103/PhysRevLett.109.062002]
Measurement of the proton-air cross-section at sqrt(s) = 57 TeV with the Pierre Auger Observatory
GUARINO, FAUSTO;VALORE, LAURA;ARAMO, CARLA;D'URSO, DOMENICO;
2012
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 de- tail. Analysing the tail of the distribution of the shower maxima, a proton-air cross-section of 505 ± 22(stat) +28 (sys) mb is foundI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
