5.4.1 So­lu­tion spin-a

Ques­tion:

Delta par­ti­cles have spin $\leavevmode \kern.03em\raise.7ex\hbox{\the\scriptfont0 3}\kern-.2em /\kern-.21em\lower.56ex\hbox{\the\scriptfont0 2}\kern.05em$. What val­ues can their spin an­gu­lar mo­men­tum in a given di­rec­tion have?

An­swer:

$$-{\textstyle\frac{3}{2}} \hbar ,\; -{\textstyle\frac{1}{2}} ... ...extstyle\frac{1}{2}} \hbar ,\; {\textstyle\frac{3}{2}} \hbar .$$

Reread the text if you got this wrong, be­cause spin is re­ally, re­ally, im­por­tant in quan­tum me­chan­ics.