Investigation of the Muon Momenta in EAS with the KASCADE Muon Tracking Detector

J. Zabierowski1, C. Büttner2, K. Daumiller3, P. Doll4 und R. Obenland4 für die KASCADE-Kollaboration
1Soltan Institute for Nuclear Studies, Cosmic Ray Phys. Dept. 90950 Lodz, Poland;
2Max-Planck-Institut für Physik, 80805 München;
3Universität Wuppertal, 42119 Wuppertal, Germany;
4Institut für Kernphysik, Forschungszentrum Karlsruhe, 76021 Karlsruhe, Germany.

Extensive Air Shower (EAS) Experiment KASCADE [1] with its Muon Tracking Detector (MTD) [2] enables precise measurements of the muon directions in EAS. These directional data with the method introduced in [3] allow to obtain a quantity z, being a ratio of transversal to longitudinal muon momentum components.

Using this quantity and a fixed, e.g. mean value of muon transverse momentum (pt=0.3 GeV), an upper limit on muon momentum spectrum in EAS is obtained for large sample of KASCADE data. The dependence of the results on the pt values is investigated. The comparison with simulated showers for different primaries shows the possibility to use the muon momentum spectrum for model tests and tuning.

The support for this work by DFG grant is kindly acknowledged.

[1] Antoni, T. et al., Nucl. Instr. and Meth., A513, (2003), 490.

[2] Doll, P. et al., Nucl. Instr. and Meth., A488, (2002), 517.