Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/92530
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Type: Journal article
Title: Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above 10¹⁷.⁸ eV
Other Titles: Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above 10(17.8) eV
Author: Aab, A.
Abreu, P.
Aglietta, M.
Ahn, E.
Al Samarai, I.
Albuquerque, I.
Allekotte, I.
Allen, J.
Allison, P.
Almela, A.
Alvarez Castillo, J.
Alvarez-Muñiz, J.
Alves Batista, R.
Ambrosio, M.
Aminaei, A.
Anchordoqui, L.
Andringa, S.
Aramo, C.
Aranda, V.
Arqueros, F.
et al.
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 2014; 90(12):122005-1-122005-25
Publisher: American Physical Society
Issue Date: 2014
ISSN: 1550-7998
1550-2368
Statement of
Responsibility: 
A. Aab ... K.B. Barber ... J.A. Bellido ... S. Blaess ... R.W. Clay ... M.J. Cooper ... B.R. Dawson ... T.D. Grubb ... T.A. Harrison ... G. C. Hill ... M. Malacari ... P. Nguyen ... S.J. Saffi ... J. Sorokin ... P. van Bodegom ... et al. ... (Pierre Auger Collaboration)
Abstract: We report a study of the distributions of the depth of maximum, Xmax, of extensive air-shower profiles with energies above 1017.8  eV as observed with the fluorescence telescopes of the Pierre Auger Observatory. The analysis method for selecting a data sample with minimal sampling bias is described in detail as well as the experimental cross-checks and systematic uncertainties. Furthermore, we discuss the detector acceptance and the resolution of the Xmax measurement and provide parametrizations thereof as a function of energy. The energy dependence of the mean and standard deviation of the Xmax distributions are compared to air-shower simulations for different nuclear primaries and interpreted in terms of the mean and variance of the logarithmic mass distribution at the top of the atmosphere.
Description: K.B. Barber, J.A. Bellido, S. Blaess, R.W. Clay, M.J. Cooper, B.R. Dawson, T.D. Grubb, T.A. Harrison, G. C. Hill, M. Malacari, P. Nguyen, S.J. Saffi, J. Sorokin, P. van Bodegom are members of The Pierre Auger Collaboration
Rights: © 2014 American Physical Society
RMID: 0030019923
DOI: 10.1103/PhysRevD.90.122005
Appears in Collections:IPAS publications

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