2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43536In the framework of quantum field theory, we examine what physical implications are included in the expectation values of the flavor neutrino charges at the time $x^0$ with respesct to the state $\ket{Ψ(x^0)}$, which is taken so as to coincide with the neutrino source state such as a charged pion at the time $x^0_I$ ($< x^0$).7 pagesHigh Energy Physics - Phenomenologytext