Discover the Cross Section of η′→γγ and Its Calculation Methods

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SUMMARY

The discussion focuses on the calculation methods for the cross section of the decay process η′→γγ. The Particle Data Group (PDG) provides a partial width measurement of 4.28±0.19 keV for this decay, with a branching fraction of 2.00±0.15%. Participants clarify that decays are characterized by decay rates rather than cross sections, emphasizing the importance of understanding these distinctions in particle physics calculations.

PREREQUISITES
  • Understanding of particle decay processes
  • Familiarity with the Particle Data Group (PDG) resources
  • Knowledge of branching fractions in particle physics
  • Basic concepts of cross sections in high-energy physics
NEXT STEPS
  • Research the calculation methods for decay rates in particle physics
  • Explore the significance of branching fractions in decay processes
  • Study the PDG database for additional particle decay information
  • Learn about the theoretical frameworks for calculating cross sections in high-energy collisions
USEFUL FOR

Particle physicists, researchers in high-energy physics, and students studying decay processes and cross section calculations will benefit from this discussion.

zihao yu
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Is there any measure for cross section of η′→γγ? Or has anyone did the calculation??
 
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That is a decay, decays have decay rates, not cross sections.
 

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