A new model-independent approach for finding the arrival direction of an extensive air shower

Abstract

Abstract.A new accurate method for reconstructing the arrival direction of an extensive air shower (EAS) is described. Compared to existing methods, it is not subject to minimization of a function and, therefore, is fast and stable. This method also does not need to know detailed curvature or thickness structure of an EAS. It can have angular resolution of about 1 degree for a typical surface array in central regions. Also, it has better angular resolution than other methods in the marginal area of arrays.

Three Nucleon Scattering Using~ a “Three-dimensional” Approach — Challenges

“…The direction of the τ air shower is calculated with a common method used in literature [34] based on the minimization of the direction vectors of each track by using Minuit [35]. The momentum of each particle is used to obtain the direction vectors (n x , n y , n z ) of the shower in Eq.…”

Study of a large array to detect ultra high energy tau-neutrino

“…The direction of the τ air shower is calculated with a common method used in literature [34] based on the minimization of the direction vectors of each track by using Minuit [35]. The momentum of each particle are used to obtain the direction vectors (n x , n y , n z ) of the shower in Eq.…”