Hyperons, pions and an expanding universe

[Carlos_Ishigami07]

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)

Again sorry, it is in Spanish

 

[berkeman]

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.

 

[Carlos_Ishigami07]

Sorry so much

 

[Keith_McClary]

If you have that in digital form you can translate with:
https://www.google.com/search?channel=fs&q=translate+spanish+to+english

A hyperon L0 at rest decays into a neutron and a p0. a) Calculate the total kinetic energy of the decay products. b) What fraction of the total kinetic energy remains in each particle?

 

[Carlos_Ishigami07]

Thanks

 

[Carlos_Ishigami07]

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.

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

 

[berkeman]

Thanks, that helps. Now can you show us how you should apply the Relevant Equations that you listed to start working on the problem?

 

[Carlos_Ishigami07]

Thanks Berkeman