A Fast Algorithm for Muon Track Reconstruction and its Application to   the ANTARES Neutrino Telescope
  An algorithm is presented, that provides a fast and robust reconstruction of neutrino induced upward-going muons and a discrimination of these events from downward-going atmospheric muon background in data collected by the ANTARES neutrino telescope. The algorithm consists of a hit merging and hit selection procedure followed by fitting steps for a track hypothesis and a point-like light source. It is particularly well-suited for real time applications such as online monitoring and fast triggering of optical follow-up observations for multi-messenger studies. The performance of the algorithm is evaluated with Monte Carlo simulations and various distributions are compared with that obtained in ANTARES data. 
ANTARES collaboration: J.A. Aguilar, I. Al Samarai, A. Albert, M.   Andre, M. Anghinolfi, G. Anton, S. Anvar, M. Ardid, A.C....
astro-ph.IM astro-ph.HE hep-ex physics.data-an