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I would like to examine the contributions from the new physics in any process in particle physics with the help of the Effective Lagrangian method.

In this method, the standard model Lagrangian plus a combination of possible new physics is available with additional Lagrangian. The dimensions of additional Lagrangians continue as 5, 6, 7, 8 etc.

Which of the contributions from the new physics is the most important and why is it important?

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    $\begingroup$ What do you mean by “the new physics”? $\endgroup$ – G. Smith Aug 18 at 6:20
  • $\begingroup$ Here I mean beyond the Standard Model as new physic. For example, for the gamma gamma-> W W process, we take into account the effect of the WWGAMMA vertex from the dimension 6 effective lagrangian to deviate from the standard model cross-section. For this process, if we take into account the contributions from the dimensions 7, 8, 9.. f the WWGAMMA vertex, I wonder whether the contribution arising from the dimension 6 $\endgroup$ – Murat Aug 18 at 12:13

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