Rare decays of mesons for new physics

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SUMMARY

The discussion centers on the significance of semi-leptonic decays of mesons involving neutrinos as indicators of new physics. These decays are considered clean signals due to their minimal interference from hadronic complexities and electromagnetic interactions. The participants emphasize that strong interactions dominate decays observable through Standard Model (SM) physics, making rare decays, particularly those to two muons, more promising for revealing potential new physics. Additionally, weak processes are highlighted as easier to calculate, enhancing their appeal for theoretical exploration.

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  • Understanding of semi-leptonic decays in particle physics
  • Familiarity with Standard Model (SM) physics
  • Knowledge of weak and strong interactions
  • Basic concepts of neutrino interactions
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  • Research the implications of rare meson decays for new physics
  • Study the calculation methods for weak processes in particle physics
  • Explore the role of neutrinos in semi-leptonic decays
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Particle physicists, researchers in theoretical physics, and anyone interested in the exploration of new physics through meson decay processes.

shakeel
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Why the semi-leptonic decays of mesons involving neutrinos are consider as clean signal for new Physics. As for as I think these are free from hadronic complexities (because we do not know exactly about strong interactions) and electromagnetic interference (because neutrinos do not couple to photons ). Can anyone guide me or correct me in this regard.
Thanks
 
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Decays which can occur via the strong interaction are dominated by SM physics (the strong interaction), you don't see small contributions from new physics (if present).
You need some weaker processes - rare decays. Semileptonic decays are one possibility there, the decays to two muons are even better, and some hadronic decays are interesting, too.
In addition, weak processes are often easier to calculate.
 

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