HIggs coupling to electroweak gauge bosons

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• spaghetti3451
In summary, the coupling of the Higgs boson to the electroweak gauge bosons in the Standard model is given by the equation (4.55) on page 146 of Cliff Burgess' textbook 'The Standard Model: A Primer.' However, Burgess suppresses the contribution ##H^{2}/2v^{2}## in this equation when discussing the decay of the Higgs boson to electroweak gauge bosons. This could be due to the extra suppression term 1/2v \approx 1/500 at the corresponding vertex connecting HHVV to that HVV.
spaghetti3451
The coupling of the Higgs boson to the electroweak gauge bosons in the Standard model is given by

$$\mathcal{L}_{\text{H-g}} = - \left( \frac{H}{v} + \frac{H^{2}}{2v^{2}} \right) \left(2M_{W}^{2}W_{\mu}^{+}W^{-\mu} + M_{Z}^{2}Z_{\mu}Z^{\mu} \right).$$

However, in Cliff Burgess' textbook 'The Standard Model: A Primer,' the author suppresses the contribution ##H^{2}/2v^{2}## in equation (4.55) on page 146 when he discusses the decay of the Higgs boson to electroweak gauge bosons.

Is there a reason why the contribution ##H^{2}/2v^{2}## is suppressed?

Maybe because of the extra suppression term $1/2v \approx 1/500$ at the corresponding vertex connecting $HHVV$ to that $HVV$?

1. What is the Higgs coupling to electroweak gauge bosons?

The Higgs coupling to electroweak gauge bosons is a fundamental interaction between the Higgs field and the electroweak gauge bosons, which are the carriers of the weak nuclear force. This interaction is responsible for giving mass to the gauge bosons and is a crucial aspect of the Standard Model of particle physics.

2. How does the Higgs coupling to electroweak gauge bosons contribute to the Higgs mechanism?

The Higgs coupling to electroweak gauge bosons is a key component of the Higgs mechanism, which explains how particles acquire mass. The interaction between the Higgs field and the gauge bosons results in a process called spontaneous symmetry breaking, where the Higgs field settles into a minimum energy state and gives mass to the gauge bosons and other particles.

3. What is the significance of the Higgs coupling to electroweak gauge bosons in the search for new physics?

The Higgs coupling to electroweak gauge bosons is a crucial aspect of the Standard Model, which has been incredibly successful in describing the behavior of particles and their interactions. However, it is also a key area of research in the search for new physics beyond the Standard Model. Any deviations from the expected behavior of the Higgs coupling could provide clues to new particles or interactions that are not accounted for in the current model.

4. How is the Higgs coupling to electroweak gauge bosons measured in experiments?

The Higgs coupling to electroweak gauge bosons can be measured through various experiments, including colliders like the Large Hadron Collider (LHC). By studying the interactions and decays of particles produced in these collisions, scientists can infer the strength of the Higgs coupling. This requires precise measurements and data analysis, as well as comparison with theoretical predictions.

5. What is the current understanding of the Higgs coupling to electroweak gauge bosons?

The Higgs coupling to electroweak gauge bosons is a well-studied aspect of the Standard Model, and its predictions have been confirmed by numerous experiments. However, there is ongoing research to further understand the nature of this interaction and its potential implications for new physics. The discovery of the Higgs boson in 2012 was a major milestone in our understanding of the Higgs coupling, but there is still much to learn about this fundamental interaction.

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