# Questions tagged [higgs]

This higgs field breaks electroweak symmetry and provides mass to particles though a process called the higgs mechanism. The excitation of the higgs field is called a higgs boson.

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### Unitary Gauge transfomation [closed]

Consider the following lagrangian $$-\frac{1}{4}tr(F^{μν}F_{μν})+\frac{1}{2}\overline{(D_μφ)}D^μφ - V(φ)$$ Where $F^{μν}$ is an $SU(2)$ field strength tensor and $φ$ is a complex scalar doublet, ...
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### Does the Higgs mechanism work through virtual Higgs bosons? [duplicate]

I read a number of articles, but couldn't find the answer. How does the Higgs mechanism work? doesn't answer my question - it doesn't even contain the word virtual.
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### In Standard Model, are both the Higgs doublet and its complex conjugate present in the universe, or not the complex conjugate one?

In Standard Model, the Higgs doublet is \begin{equation} \Phi=\left(\begin{array}{c}\phi^+\\ \phi^0\end{array}\right) =\frac{1}{\sqrt{2}}\left(\begin{array}{c} \phi_1+i\phi_2\\ \phi_3+i\phi_4 \end{...
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### Does $CP$-violation mean $CP$-odd?

This might be a very simple question but I'm doing some reading into the Higgs boson and $CP$-symmetry breaking. I've seen the terms $CP$-even and $CP$-odd terms in the Hamiltonian floated around and ...
1 vote
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### If we had a Higgs triplet with hypercharge $Y=1$, would we get three Higgs bosons?

In the Standard Model, the Higgs field is a doublet of SU(2) and hypercharge $Y=1/2$. We have four real scalar degrees of freedom (since $H$ is a complex doublet); three of these get "eaten" ...
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### What are thought to be causes of the Mexican hat potential?

We all know the shape of the Mexican Hat Potential. It even serves as site logo. It's a weird potential that has an actual existence in condensed state physics. It's for sure a possibility, and ...
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### How to identify which particles can run in the loop for Higgs decays to gluons and photons

I am following the lecture notes given in "Higgs physics within and beyond the Standard Model" by HE. Logan and on pages 21 to 24 she discusses Higgs boson decays to photons and gluons which ...
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### How to estimate the experimental acceptance of a particle as a function of its life-time?

My lecturer stated that we can calculate the experimental acceptance of the Higgs boson as a function of the life-time and also as a function of the mass by reading the following article: Davier and ...
1 vote