Nuclear and particle physics

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Question 24

The table below shows the quark compositions of four particles, $P$ , $Q$ , $R$ , and $S$ .

Particle	Quark composition
$P$	$udˉu\bar{d}$
$Q$	$dsˉd\bar{s}$
$R$	$u ss$
$S$	$dd s$

Which particle has a net charge of 0 and a strangeness of +1?

Particle $Q$

Particle $R$

Particle $S$

Particle $P$