Resoance states and quark annihilation

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SUMMARY

The discussion focuses on the interactions between K mesons and ordinary matter, specifically examining quark annihilation processes. It highlights the reaction sD + duu leading to the formation of resonance baryons and explores the conditions under which resonance states can occur at the right center of mass energy (CME). The participants agree that various interactions are possible, influenced by the energy levels and branching fractions of the processes involved. The consensus is that resonance particles can indeed facilitate annihilation when the appropriate CME is achieved.

PREREQUISITES
  • Understanding of K mesons and their interactions
  • Familiarity with quark models and annihilation processes
  • Knowledge of center of mass energy (CME) in particle physics
  • Concept of resonance states and their significance in particle interactions
NEXT STEPS
  • Research the properties of K mesons and their decay channels
  • Study the implications of resonance energy widths in particle interactions
  • Explore quark annihilation processes in high-energy physics
  • Investigate the role of virtual particles in mediating interactions
USEFUL FOR

Particle physicists, researchers in quantum field theory, and students studying high-energy interactions will benefit from this discussion, particularly those interested in quark dynamics and resonance phenomena.

Master J
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I've been looking at interactions between K mesons and "ordinary" matter such as protons and neutrons.
Since I can't put a bar over a letter, I'll let a CAPITAL letter stand for an ANTI-quark.

sD + duu ---> suu + uU (thru a resonance baryon suu ++) I know this one is possible, but what about the following?

sD + duu ---> duu + sD here the d and D annhilate and give a d D again. Why would a u and U be prefered? Because they are lighter? At high energy, would we get a d D as above?


Again, I know this one happens:

sU + udu ---> sdd + uD (virtual n exchange)

what about a resonance state at the right centre of mass energy (CME) (resonance particle being sdu)?

I guess my question is...CAN a resonance particle, and thus annihilation occur once we have the right CME? And when we are away from the CME different possible interactions can occur?





Are such interactions possible? I don't see why not...I'd guess they all are, yet with different branching fractions.
 
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In physics, anything that can happen, does happen, so your last statement is correct. A resonance will occur at the resonance energy, but this can be a broad range of energies due to the width of the resonance.
 

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