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The Cosmic Perspective Fundamentals | 2nd Edition | ISBN: 9780133889567 | Authors: Jeffrey O. Bennett; Megan O. Donahue; Nicholas Schneider; Mark Voit
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Chapter , Problem 7QQ

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QUESTION:

Problem 7QQ

Choose the best answer to each of the following. Explain your reasoning with one or more complete sentence

What kinds of particles were present in the universe during the era of nucleosynthesis? (a) mostly matter (b) mostly antimatter (c) approximately equal amounts of matter and antimatter

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QUESTION:

Problem 7QQ

Choose the best answer to each of the following. Explain your reasoning with one or more complete sentence

What kinds of particles were present in the universe during the era of nucleosynthesis? (a) mostly matter (b) mostly antimatter (c) approximately equal amounts of matter and antimatter

ANSWER:

Solution 7QQ:

Step 1 of 2:-

Here we have to explain, what kind of particles were present in the universe in the nucleosynthesis era.

In the era of particles, both type of matters were formed such as matter and antimatter.

They created and destroyed by continuous annihilation process. Then this symmetry also broken by nature as it produced 1 more particle than the antiparticle in every billion  pair formation.

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