91影视

The subatomic particles having large mass and are the combination of three quarks are known as baryons.

The existence quark and an antiquark in a subatomic particle are termed Meson

Combine two quarks,$\frac{1}{2}$and$\frac{1}{2}$.

Spin 1 (If they are parallel),

$\left(\frac{1}{2}+\frac{1}{2}\right)or\left(\frac{-1}{2}+\frac{-1}{2}\right)$

Zero (If they are antiparallel),

role="math" localid="1658124052031" $\left(\frac{1}{2}+\frac{-1}{2}\right)or\left(\frac{1}{2}+\frac{-1}{2}\right)$

Combine the result with the third quark for the case to get spin1, $\frac{1}{2}$ and1.

$\frac{3}{2}$(if they are parallel),

$\left(\frac{1}{2}+1\right)\mathrm{or}\left(\frac{-1}{2}-1\right)$

$\frac{1}{2}$(if they are antiparallel),

role="math" localid="1658123797200" $\left(\frac{-1}{2}+1\right)\mathrm{or}\left(\frac{1}{2}-1\right)$

For the case to get zero, only $\frac{1}{2}$ is there only.

Thus, the possible spins for baryons are $\frac{1}{2}$and $\frac{3}{2}$.

Combine two quarks, $\frac{1}{2}$ and $\frac{1}{2}$.

Spin 1 (if they are parallel),

$\left(\frac{1}{2}+\frac{1}{2}\right)or\left(\frac{-1}{2}+\frac{-1}{2}\right)$

Zero (if they are antiparallel),

$\left(\frac{1}{2}+\frac{-1}{2}\right)or\left(\frac{1}{2}+\frac{-1}{2}\right)$

Thus, the possible spins for mesons are 1 and 0.