The phenomenological implications to the decay of the neutral pion from the introduction of new dark particles are discussed. We calculate the contribution to the \(\pi^0\) decay width and then we extend the theory by adding dark sector vector particles which interact through \(\gamma^\mu\), \(\sigma^{\mu\nu}\) and \(\sigma^{\mu\nu}\gamma^5\). We c...

Dark boson mediation of the \(\pi^0\rightarrow \gamma e^+ e^-\) decay

10.48550/arxiv.2205.15671