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### Fundamentals Of Physics

Book edition 10th Edition
Author(s) David Halliday
Pages 1328 pages
ISBN 9781118230718

# The quark makeups of the proton and neutron are ${\mathbit{u}}{\mathbit{u}}{\mathbit{d}}$and,${\mathbit{u}}{\mathbit{d}}{\mathbit{d}}$ respectively. What are the quark makeups of (a) the antiproton and (b) the antineutron?

(a) The antiproton is written as.$\overline{u}\overline{u}\overline{d}$

(b) The antineutron is written as.$\overline{u}\overline{d}\overline{d}$

See the step by step solution

## Step 1: (a) Quark makeups of the antiproton.

It is given that the quark makeups of the proton is.$uud$

The antiproton is composition of two up antiquarks and one down antiquark.

Hence, the antiproton is written as.$\overline{u}\overline{u}\overline{d}$

## Step 2: (b) Quark makeups of the antineutron.

It is given that the quark makeups of the neutron is.$udd$

The antiproton is composition of one up antiquarks and two down antiquark.

Hence, the antineutron is written as.$\overline{u}\overline{d}\overline{d}$

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