Question

Как звучит закон сохранения барионного числа?

Answer 1

В физике элементарных частиц барионное число — это приблизительно сохраняемое квантовое число системы .

Answer 2

The Conservation of Baryon Number

The conservation of baryon number is a fundamental principle in particle physics that states that the total number of baryons in an isolated system remains constant over time. Baryons are a class of subatomic particles that include protons and neutrons, which are the building blocks of atomic nuclei.

According to this conservation law, the total baryon number before and after any particle interaction or decay process must be the same. In other words, the number of baryons created or destroyed in a given reaction must be equal.

The conservation of baryon number can be summarized as follows:

1. The total baryon number of an isolated system is conserved. 2. Baryons have a baryon number of +1, while antibaryons have a baryon number of -1. 3. The sum of the baryon numbers of all particles involved in a reaction must be the same before and after the reaction.

This conservation law is a consequence of a more general principle known as the conservation of total charge, which states that the total electric charge of an isolated system is also conserved.

Example of Baryon Number Conservation

Let's consider an example to illustrate the conservation of baryon number. Suppose we have a reaction involving protons and neutrons:

Before the reaction: - Number of protons = 2 - Number of neutrons = 2 - Total baryon number = 2 + 2 = 4

After the reaction: - Number of protons = 1 - Number of neutrons = 3 - Total baryon number = 1 + 3 = 4

In this example, we can see that the total baryon number is conserved before and after the reaction. The number of protons and neutrons may change, but the total baryon number remains the same.