Hyperons, pions and an expanding universe

In summary, the conversation discusses the translation of a physics problem from Spanish to English and the request for the original poster to show their work in solving the problem. The problem involves the decay of a hyperon at rest into a neutron and a pion, and the calculation of the total kinetic energy and the fraction of energy in each particle. The discussion also mentions the detection of a photon emitted in the decay and its energy. The conversation ends with a request for the original poster to show their application of the relevant equations to solve the problem.
  • #1
Carlos_Ishigami07
10
2
Homework Statement
what quantities are conserved in the decay of Lambda 0 and in the decay of pion 0
Relevant Equations
E(Lambda0) = E(n) + E(pi0)
E = squart(p^2*c^2 + m^2*c^4)
p(n) = p(pi0)
Screenshot_20210103-093458.jpg

Again sorry, it is in Spanish
 
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  • #2
Welcome to PhysicsForums.

All posts must be in English. Please type the English translation of the problem statement into a Reply window.

Also, you absolutely need to show your best efforts to work the problem. Please type your work into your reply. Thank you.
 
  • #3
Sorry so much
 
  • #4
  • #5
Thanks
 
  • #6
A hyperon at rest Lambda zero decays into a neutron and a zero pion. a) Determine the kinetic energies of the decay products. b) What fraction of the total kinetic energy is taken out of each particle? c) A physicist detects on Earth one of the two photons that are emitted in the decay of a zero pion. The zero pion was at rest in the cluster shown in Figure 44.19 before it decayed. What is the energy of the photon that is detected on Earth?
The Scale factor of the Universe is 0.35.
1610129099945469846245.jpg

The Universe expanded during the time the photon traveled to Earth. How does this affect the wavelength and energy of the photon that the physicist detects
 
  • #7
Thanks, that helps. Now can you show us how you should apply the Relevant Equations that you listed to start working on the problem? :smile:
 
  • #8
Thanks Berkeman
 

1. What are hyperons?

Hyperons are a type of subatomic particle that are made up of three quarks. They are similar to protons and neutrons, but contain different combinations of quarks.

2. What are pions?

Pions are also subatomic particles, but they are made up of only two quarks. They are the lightest of all the known mesons and play a crucial role in the strong nuclear force.

3. What is the significance of hyperons and pions in the universe?

Hyperons and pions are important in understanding the structure and behavior of matter in the universe. They are involved in the formation of atomic nuclei and play a role in the nuclear reactions that power stars.

4. How do hyperons and pions relate to an expanding universe?

As the universe expands, the particles within it also expand and cool. This allows for the formation of hyperons and pions, which were present in the early universe but are no longer produced today. Studying these particles can give insight into the early stages of the universe.

5. Can hyperons and pions be observed?

Yes, hyperons and pions can be observed in particle accelerators and through cosmic ray experiments. They can also be indirectly observed through their interactions with other particles in the universe.

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