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wlln
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Could you explain the meanings of EW global fit,pole mass,gluon fusion? Thank you very much!
EW global fit is a statistical analysis technique used in particle physics to determine the values of the fundamental parameters of the Standard Model, such as the masses of the W and Z bosons. It is important because it allows us to test the consistency of the Standard Model and search for any deviations or new physics that may exist beyond it.
The pole mass is the mass of a particle calculated using the pole of the propagator in a Feynman diagram. It is relevant because it is a physical quantity that can be measured experimentally, and it is often used to compare with theoretical predictions in particle physics calculations.
Gluon fusion is a process where two gluons interact to produce a new particle, such as a Higgs boson. In the EW global fit, gluon fusion contributes to the total cross-section for Higgs boson production, which is an important parameter in the fit.
Gluon fusion is a key process in the search for new physics, particularly in the context of the Higgs boson. Any new particles that interact with the Higgs boson can affect its production through gluon fusion, providing valuable information about the nature of these new particles.
The results of the EW global fit and pole mass calculations allow us to test the predictions of the Standard Model and validate its consistency with experimental data. Any discrepancies or deviations from the expected values can indicate the presence of new physics beyond the Standard Model.