Search for GeV-Scale Sterile Neutrinos Responsible for Active Neutrino Oscillations and Baryon Asymmetry of the Universe

Figure 9

Two dimensional distribution of flux for 1 GeV sterile neutrino as a function of Θ_𝑁, the angle between the proton beam axis and momentum of 𝑁, and its energy calculated for 400 GeV proton incident on Be target. The 𝑁’s are produced through the decay 𝐷_𝑠→𝜇𝑁 assuming mixing strength |𝑈_𝜇𝑁|²=1.