Fig. 3. Definitions of θ and ϕ for neutrino directivity. Same as spherical coordinates, note that θ is the azimuthal angle on the x axis and ϕ is the elevation angle on the x−y plane.

New Phys.: Sae Mulli 2022;72:663~669 https://doi.org/10.3938/NPSM.72.663

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