Measurement of the proton-air cross-section at $\sqrt{s}=57$ TeV with the Pierre Auger Observatory

P. Abreu; M. Avenier; C. Bérat; J. Chauvin; D.H. Koang; S. Le Coz; D. Lebrun; K. Louedec; F. Montanet; A. Stutz; M. Tartare; A. Bellétoile; R. Dallier; P. Lautridou; V. Marin; L. Martin; O. Ravel; B. Revenu; D. Allard; A. Creusot; G. Decerprit; C. Lachaud; E. Parizot; G. Tristram; R. Bardenet; A. Cordier; S. Dagoret-Campagne; D. Garcia Gamez; B. Kégl; K. Louedec; D. Monnier Ragaigne; M. Urban

HAL: in2p3-00723317, version 1

arXiv: 1208.1520

DOI: 10.1103/PhysRevLett.109.062002

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Physical Review Letters 109 (2012) 062002

Measurement of the proton-air cross-section at $\sqrt{s}=57$ TeV with the Pierre Auger Observatory

P. Abreu, M. Avenier¹, C. Bérat¹, J. Chauvin¹, D.H. Koang¹, S. Le Coz¹, D. Lebrun¹, K. Louedec¹, F. Montanet¹, A. Stutz¹, M. Tartare¹, A. Bellétoile², R. Dallier², P. Lautridou², V. Marin², L. Martin², O. Ravel², B. Revenu², D. Allard³, A. Creusot³, G. Decerprit³, C. Lachaud³, E. Parizot³, G. Tristram³, R. Bardenet⁴, A. Cordier⁴, S. Dagoret-Campagne⁴, D. Garcia Gamez⁴, B. Kégl⁴, K. Louedec^{1, 4}, D. Monnier Ragaigne⁴, M. Urban⁴

For the PIERRE AUGER collaboration(s)

(2012)

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. Analysing the tail of the distribution of the shower maxima, a proton-air cross-section of $[505\pm22(stat)^{+28}_{-36}(sys)]$ mb is found.

1:	LPSC - Laboratoire de Physique Subatomique et de Cosmologie

2:	SUBATECH - Laboratoire SUBATECH Nantes

3:	APC - AstroParticule et Cosmologie

4:	LAL - Laboratoire de l'Accélérateur Linéaire

Research team: APC - AHE

Subject(s)

Physics/Astrophysics/High Energy Astrophysical Phenomena

Sciences of the Universe/Astrophysics/High Energy Astrophysical Phenomena

Physics/High Energy Physics - Experiment

Fulltext link:

http://fr.arXiv.org/abs/1208.1520


in2p3-00723317, version 1
http://hal.in2p3.fr/in2p3-00723317
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From: Emmanuelle Vernay <>
Submitted on: Thursday, 9 August 2012 08:33:03
Updated on: Thursday, 30 August 2012 17:08:07