PQCD analysis of atmospheric tau neutrino

Abstract

We calculate the flux of v, produced in the atmosphere by cosmic ray-air collisions. The production channels of v, from the process pA -> X -> v(T)((v) over bar (T))Y with X = D-s W-+/-, Z, h(b), t (t) over bar, are considered. The calculations are performed by employing perturbative QCD (PQCD). The predicted v(T) flux phi v(T)(E) is given for energy range 10(3)GeV <= E <= 10(8)GeV.