Basic question on the pertubative Standard Model

Thread starter Breo
Start date Mar 14, 2015
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Model Standard Standard model

In summary, it is important to check whether a process violates any symmetry or law in order to determine if it is allowed in the standard model. When a process is allowed, the contribution of each diagram can vary and there is no straightforward way to determine the dominant ones. It depends on the order, couplings, and propagators. To calculate this more seriously, it is necessary to use quantum field theory, which can be time-consuming. One helpful rule is that the Higgs boson has a dominant coupling to top quarks, making it more likely for a virtual top quark loop to be produced in a process such as H -> gg. However, this is not always the case and it is important to check all possible diagrams.

Mar 14, 2015

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Breo said:

For now I have another doubt about technicolours and bound states.

I suggest you start with easier things first. Learn to walk before you try to run.

<h2>1. What is the perturbative Standard Model?</h2><p>The perturbative Standard Model is a theoretical framework in particle physics that describes the fundamental particles and their interactions. It is based on the principles of quantum field theory and has been extensively tested and confirmed through experiments.</p><h2>2. What are the basic components of the perturbative Standard Model?</h2><p>The perturbative Standard Model includes three types of particles: quarks, leptons, and gauge bosons. Quarks and leptons are the building blocks of matter, while gauge bosons are the force carriers that mediate interactions between particles.</p><h2>3. How does the perturbative Standard Model explain the four fundamental forces?</h2><p>The perturbative Standard Model explains the four fundamental forces (gravitational, electromagnetic, strong, and weak) through the exchange of gauge bosons between particles. Each force is associated with a specific type of gauge boson.</p><h2>4. What is the role of the Higgs boson in the perturbative Standard Model?</h2><p>The Higgs boson is a fundamental particle predicted by the perturbative Standard Model. It is responsible for giving mass to other particles through the Higgs mechanism. Its discovery in 2012 confirmed a key aspect of the Standard Model.</p><h2>5. Are there any limitations to the perturbative Standard Model?</h2><p>While the perturbative Standard Model has been incredibly successful in explaining the behavior of particles and their interactions, it is not a complete theory of everything. It does not include gravity and does not provide an explanation for dark matter and dark energy. Scientists are currently working on theories that can incorporate these missing pieces.</p>

1. What is the perturbative Standard Model?

The perturbative Standard Model is a theoretical framework in particle physics that describes the fundamental particles and their interactions. It is based on the principles of quantum field theory and has been extensively tested and confirmed through experiments.

2. What are the basic components of the perturbative Standard Model?

The perturbative Standard Model includes three types of particles: quarks, leptons, and gauge bosons. Quarks and leptons are the building blocks of matter, while gauge bosons are the force carriers that mediate interactions between particles.

3. How does the perturbative Standard Model explain the four fundamental forces?

The perturbative Standard Model explains the four fundamental forces (gravitational, electromagnetic, strong, and weak) through the exchange of gauge bosons between particles. Each force is associated with a specific type of gauge boson.

4. What is the role of the Higgs boson in the perturbative Standard Model?

The Higgs boson is a fundamental particle predicted by the perturbative Standard Model. It is responsible for giving mass to other particles through the Higgs mechanism. Its discovery in 2012 confirmed a key aspect of the Standard Model.

5. Are there any limitations to the perturbative Standard Model?

While the perturbative Standard Model has been incredibly successful in explaining the behavior of particles and their interactions, it is not a complete theory of everything. It does not include gravity and does not provide an explanation for dark matter and dark energy. Scientists are currently working on theories that can incorporate these missing pieces.