Measurement of atmospheric production depths of muons with the pierre auger observatory
1 Laboratoire de l'Accélérateur linéaire (LAL), Université Paris 11, CNRS-IN2P3, Orsay, France
2 Observatorio Pierre Auger, Av. San Martin Norte 304, 5613 Malargüe, Argentina
The time structure of muons at ground retains valuable information about the longitudinal development of the hadronic component in extensive air showers. Using the signals collected by the surface detector array of the Pierre Auger Observatory it is possible to reconstruct the Muon Production Depth (MPD) distribution. In this work we explore the main features of these reconstructions for zenith angles around 60° and different energies of the primary particle. From the MPDs we define a new observable, Xμmax as the depth, along the shower axis, where the maximum number of muons is produced. The potentiality of Xμmax to infer the mass composition of cosmic rays is studied.
For the full authorlist see Appendix “Collaborations” in this volume or http://www.auger.org/archive/authors_2012_06.html
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.