Graduate How to find branching ratio after modelling Lagrangian?

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SUMMARY

After modeling the Lagrangian and extracting Feynman rules, one can calculate the matrix element, which leads to the decay width and subsequently the branching ratio (BR). The discussion highlights the potential to explore alternative methods for calculating the branching ratio, including the application of the Euler-Lagrangian equation. Utilizing these approaches can enhance the understanding and calculation of branching ratios in particle physics.

PREREQUISITES
  • Understanding of Lagrangian mechanics
  • Familiarity with Feynman rules
  • Knowledge of decay width calculations
  • Basic grasp of the Euler-Lagrangian equation
NEXT STEPS
  • Research alternative methods for calculating branching ratios in particle physics
  • Study the application of the Euler-Lagrangian equation in quantum field theory
  • Explore advanced topics in decay width calculations
  • Investigate the implications of Feynman rules on particle decay processes
USEFUL FOR

Particle physicists, theoretical physicists, and students studying quantum mechanics who are interested in advanced calculations related to branching ratios and decay processes.

zaman786
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to find branching ratio after modelling Lagrangian
hi, we have learned that after modelling Lagrangian and extracting Feynman rules from it - we can find matrix element - from which decay width can be calculated - and than Branching ratio - my question is can we use some other way of calculatiing BR , or can we use our Lagrangain in our Euler -Lagrangian equation - from there we can find out Branching ratio ?
 

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