Question: A - is captured by a deuteron d (J P = 1 + ) and produces the reaction - + dn + n.

A π- is captured by a deuteron d (JP = 1+) and produces the reaction π-+ d→n + n.

(a) If the capture is from an S wave, what is the total spin of the two neutrons and what is their orbital momentum? 

(b) Show that if the capture is from a P state, the neutrons are in a singlet.

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