Interaction without T-Channel: S-Channel Only

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SUMMARY

The discussion centers on interactions that occur exclusively through the S-channel, specifically in scenarios where T-channel interactions are prohibited. Examples provided include the electron-positron annihilation into tau pairs (e+ e- -> tau+ tau-) and Compton scattering. The conversation emphasizes that reactions can occur when the resultant products do not couple to the incoming particles, highlighting the significance of understanding S-channel dynamics in particle physics.

PREREQUISITES
  • Understanding of S-channel and T-channel interactions in particle physics
  • Familiarity with particle reactions, specifically electron-positron annihilation
  • Knowledge of Compton scattering and its implications
  • Basic concepts of coupling in quantum field theory
NEXT STEPS
  • Research the mathematical framework of S-channel interactions in quantum field theory
  • Explore detailed examples of electron-positron annihilation processes
  • Study the implications of coupling in particle reactions
  • Investigate the role of Compton scattering in modern physics applications
USEFUL FOR

Particle physicists, students of quantum field theory, and researchers interested in the dynamics of particle interactions without T-channel contributions.

touqra
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Just wondering whether there's any interaction, where the t-channel is prohibited, only the s-channel ?
 
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If you meant "there is only the s-channel": e+ e- -> tau+ tau-, as one example. A more general class: Every reaction in which the result products do not couple to the incoming particles. Another example (either unfitting or better fitting, depending on what you are looking for): Compton scattering.
 

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