All Problems

Elementary Particles

Problem 6.296

\(6.296 .\) Find the kinetic energy of a neutron emerging as a result of the decay of a stationary \(\Sigma^{-}\) hyperon \(\left(\Sigma-\rightarrow n+\pi^{-}\right)\).

Reveal Answer
T=[(mΣmn)2mπ2]/2mΣ=19.5MeVT=\left[\left(m_{\Sigma}-m_{n}\right)^{2}-m_{\pi}^{2}\right] / 2 m_{\Sigma}=19.5 \mathrm{MeV}