Radiative Gluon/Photon: Tree Level vs. Higher Corrections

  • Thread starter touqra
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In summary, a radiative gluon or photon is a particle that carries the strong nuclear or electromagnetic force and mediates interactions between other particles. "Tree level" refers to the simplest calculation of these interactions, while higher corrections involve more complex calculations that take into account additional factors or interactions. These corrections are important in improving the accuracy and precision of predictions for particle interactions, and are calculated using advanced mathematical techniques such as perturbation theory.
  • #1
touqra
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Can there be cases where the cross section for the production of a radiative soft photon or gluon be larger than its tree level diagram ? Or in general, are there cases where higher corrections be larger than tree level in any interaction ?
 
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  • #2
Well, there are processes that are completely forbidden at tree level but occur at loop level. Like photon/photon scattering.
 
  • #3
Yes. As an example e+e- -> e+e- gamma has an infrared collinear divergence: i.e. the cross-section blows up as the photon gets arbitrarily soft.
 

Related to Radiative Gluon/Photon: Tree Level vs. Higher Corrections

1. What is a radiative gluon/photon?

A radiative gluon or photon is a particle that carries the strong nuclear or electromagnetic force, respectively. These particles are responsible for mediating interactions between other particles, such as quarks and electrons.

2. What is meant by "tree level" in relation to radiative gluon/photon?

Tree level refers to the simplest or most basic calculation of the interactions involving radiative gluons or photons. This calculation does not take into account any higher order corrections or more complex interactions.

3. What do higher corrections refer to in the context of radiative gluon/photon?

Higher corrections refer to more complex calculations that take into account additional factors or interactions, such as loop diagrams or virtual particles, that were not included in the tree level calculation. These corrections can improve the accuracy of predictions and calculations.

4. Why are higher corrections important in the study of radiative gluon/photon interactions?

Higher corrections are important because they can significantly impact the accuracy and precision of predictions for particle interactions. Including these corrections can improve our understanding of the underlying physics and help us make more accurate predictions and interpretations of experimental data.

5. How are higher corrections calculated in the study of radiative gluon/photon?

Higher corrections are calculated using more advanced mathematical techniques, such as perturbation theory, which allows us to account for the interactions of virtual particles and other factors that were not included in the tree level calculation. These techniques involve solving complex equations and performing calculations to determine the effects of these higher order corrections.

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