Which of the fundamental interactions governs the following decay? $\pi ^ { 0 } \rightarrow \gamma + \gamma$
A) Weak nuclear
B) Electromagnetic
C) Gravitational
D) Strong nuclear

Question

Quizplus · Accepted Answer

The decay of a neutral pion ($\pi ^ { 0 }$) into two gamma rays ($\gamma$) is governed by the electromagnetic force, as pion is a meson made up of quarks and a gluon, but it has no net electric charge. Therefore, no weak or strong nuclear force is involved in the decay process.

Which of the Fundamental Interactions Governs the Following Decay π0→γ+γ\pi ^ { 0 } \rightarrow \gamma + \gammaπ0→γ+γ

Which of the Fundamental Interactions Governs the Following Decay $\pi ^ { 0 } \rightarrow \gamma + \gamma$