Understand Phenomenological Model | Friends Help

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Discussion Overview

The discussion revolves around understanding the phenomenological model specifically related to the elastic scattering of positive pions by protons at energies between 200-1200 MeV. Participants explore the complexities and nuances of this model within the context of nuclear physics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests help in understanding the phenomenological model, initially without specifying the context.
  • Another participant points out the need for specificity regarding the phenomenon in question.
  • A later post clarifies that the inquiry pertains to the elastic scattering of positive pions by protons, indicating a focus on a specific energy range.
  • One participant describes the problem as complex and specialized, mentioning the interactions involved, such as electromagnetic and strong interactions, and the need for appropriate form factors and computational methods like distorted wave Born approximation.
  • Concerns are raised about the complications arising from the composite nature of the particles involved and the low-energy conditions affecting the scattering process.
  • Another participant expresses gratitude for the explanation but requests research papers related to the topic for further study.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the specifics of the phenomenological model, and multiple views regarding the complexity and requirements for understanding the model remain evident.

Contextual Notes

The discussion highlights the limitations of the initial inquiry due to vagueness and the specialized nature of the topic, which may require expert consultation for deeper understanding.

Who May Find This Useful

Individuals interested in nuclear physics, particularly those studying elastic scattering processes and phenomenological models in particle interactions.

DMESONS
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Dear friends,

Can you help me to understand the phenomenological model?

Best regards
 
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Alhakami said:
Can you help me to understand the phenomenological model?

Phenomenological model of what? What don't you understand about it?
 
Your question is too vague. You need to specify what phenomenom you are concerned with.
 
Sorry freinds,

my question about Phenomenological model for elastic scattering of positive pions by proton in energy 200-1200Mev.

Best regards.
 
Well at least he was specific.

This is a tough and messy highly specialist oriented nuclear physics problem that I am not in the position to help you with really. But I do know a little bit of the game they play b/c the particular interaction is known to be fruitful in principle for experimental data on the strong interaction (dont ask me for specifics).

The pion and protons fundamentally are composite particle, and there will be electromagnetic interactions as well as strong interactions taking place. Typically the game is to guess appropriate form factors, and run distorted wave born approximation algorithms on them etc.

Anyway, youu have a spin 0 and spin 1/2 target so you will have several polarization observables (from the flip and antispin flip amplitudes)+ unpolarized ones. You are also working with low energies so there is going to be residual complications on the compositness of the target (say a heavy nucleus with a lot of protons floating around on the outer orbitals).

You will need to consult a specialist for more details, say at your local university.. I very much doubt that by chance someone here knows the details explicitly.
 
Dear Haelfix,
thank you for your reply and explanation BUT if you have some research for elastic scattering of pions by proton send me these papers...
 

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