Hyperons, pions and an expanding universe

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SUMMARY

The discussion focuses on the decay of a hyperon L0 at rest into a neutron and a pion (p0), addressing the calculation of total kinetic energy and the distribution of this energy among the decay products. Participants are tasked with determining the kinetic energies of the decay products and the energy of a photon detected on Earth, considering the universe's expansion with a scale factor of 0.35. The conversation emphasizes the importance of applying relevant equations to solve these physics problems accurately.

PREREQUISITES
  • Understanding of particle physics, specifically hyperons and pions.
  • Knowledge of kinetic energy calculations in particle decay.
  • Familiarity with the concept of the expanding universe and its effects on photon energy.
  • Ability to apply relevant equations in physics problem-solving.
NEXT STEPS
  • Study the decay processes of hyperons and their decay products.
  • Learn about the calculations of kinetic energy in particle physics.
  • Research the implications of cosmic expansion on photon wavelength and energy.
  • Explore relevant equations in particle decay and energy conservation.
USEFUL FOR

This discussion is beneficial for physics students, particle physicists, and anyone interested in understanding particle decay processes and the effects of cosmic expansion on energy measurements.

Carlos_Ishigami07
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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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Sorry so much
 
Thanks
 
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
 
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:
 
Thanks Berkeman
 

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