Article ID Journal Published Year Pages File Type
1770973 Astroparticle Physics 2012 15 Pages PDF
Abstract

In this work we investigate and parameterize the amount and angular distribution of Cherenkov photons, which are generated by low-energy secondary particles (typically ≲500≲500 MeV), which accompany a muon track in water or ice. These secondary particles originate from small energy loss processes. We investigate the contributions of the different energy loss processes as a function of the muon energy and the maximum transferred energy. For the calculation of the angular distribution we have developed a generic transformation method, which allows us to derive the angular distribution of Cherenkov photons for an arbitrary distribution of track directions and their velocities.

► High energy muons in neutrino telescopes are accompanied by secondary particles. ► Secondary particles from small energy losses (<0.5 GeV) appear almost continuously. ► These particles increase the Cherenkov light yield by some ten percent. ► We parametrize the additional light yield and its angular distribution. ► A generic method to calculate the angular photon distribution is presented.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Astronomy and Astrophysics
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