A measurement of the photonuclear interactions of 180 GeV muons in iron
The TileCal System of the ATLAS CollaborationThe ATLAS Collaboration
(Received: 22 January 2003 / Published online: 5 May 2003)
The energy spectrum and the cross section of photonuclear interactions of 180 GeV muons in iron were measured at the CERN SPS using prototype modules of the ATLAS hadron calorimeter. The differential cross section for a muon fractional energy loss was measured in the range 0.1 <v<1. The integrated cross section is cm 2g -1 in agreement with the theoretical prediction of cm 2g -1. The best adjustment of the data to the theory is achieved for the value of of the photon-nucleon cross section for photons with energies in the range from 18 to 180 GeV.
© Società Italiana di Fisica, Springer-Verlag 2003