Cosmic ray pion-nucleon flux ratio in the atmosphere

Abstract
Using the Bose-type distribution of the form E(d3 sigma /d3p)=Ax square root s/(exp( epsilon ( lambda )/T)-1) for p+p to pi -+x reactions in ISR experiments at centre of mass energy square root s=53 GeV, the cosmic ray pion-nucleon flux ratio in the atmosphere is estimated. The invariant pion-nucleon flux ratio yields the temperature dependence on energy square root s in the following way: T=0.129( sigma in/ square root s)14.6/.