Problem 14

Given information

Quarks have spin .

Step-by-step explanation

Recalling that baryons are made up of two quarks and one antiquark. In total, baryons contain 3 quarks. The spin of a quark is 1/2 and the spin of an antiquark -1/2. If the summation of their spins is calculated, it is impossible to have an integral total spin. Hence, the spin of baryons only revolve around 1/2 or 3/2. On the other hand, mesons are made up of quark and an antiquark. Hence the only possibilities for the total spin of a baryon are 0 and