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An antibaryon composed of two antiup quarks

and one antidown quark would have a charge of

(1) +1e (3) 0e

(2) −1e (4) −3e

Verified Answer :

Answer:

(2) −1 e

Explanation:

A quark is the lightest elementary particles which form hadron such as proton and neutron. A quark has fractional charge.

Up, charm and top quarks have \(+\frac{2}{3} e\) charge where as down, strange and bottom quarks have \(-\frac{1}{3}e\) charge.

The antiparticle of up quark is antiup quark and has charge \(-\frac{2}{3}e\) charge.

The antiparticle of down quark is antidown quark and has charge \(+\frac{1}{3}e\) charge.

An antibaryon is composed of two anti-up quark and one anti-down quark.

Net charge of the anti-baryon is:

\(2\times (-\frac{2}{3} e)+1\times (+\frac{1}{3})e=-1e\)

Thus, antibaryon has -1e charge.

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