<p>A diagram showing beta-minus decay.<br><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n^{0}\rightarrow p^{+}+e^{-}+{\bar {\nu }}_{e}}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><msup><mi>n</mi><mrow class="MJX-TeXAtom-ORD"><mn>0</mn></mrow></msup><mo stretchy="false">→<!-- → --></mo><msup><mi>p</mi><mrow class="MJX-TeXAtom-ORD"><mo>+</mo></mrow></msup><mo>+</mo><msup><mi>e</mi><mrow class="MJX-TeXAtom-ORD"><mo>−<!-- − --></mo></mrow></msup><mo>+</mo><msub><mrow class="MJX-TeXAtom-ORD"><mrow class="MJX-TeXAtom-ORD"><mover><mi>ν<!-- ν --></mi><mo stretchy="false">¯<!-- ¯ --></mo></mover></mrow></mrow><mrow class="MJX-TeXAtom-ORD"><mi>e</mi></mrow></msub></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle n^{0}\rightarrow p^{+}+e^{-}+{\bar {\nu }}_{e}}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ae1b69336c1d3d2c3c918436865919a0c11c4eba" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.671ex; width:19.333ex; height:3.009ex;" alt="n^{0}\rightarrow p^{+}+e^{-}+{\bar  {\nu }}_{e}"></span>
</p>
The intermediate W<sup>-</sup> boson has been omitted for simplicity. Protons are red and neutrons are blue.
<a href="//commons.wikimedia.org/wiki/User:Inductiveload" title="User:Inductiveload">Inductiveload</a>
2007-10-05
<span class="int-own-work" lang="en">Own work</span>