Whey new physics must lie around the TeV scale ?

In summary, the conversation discusses the belief that new physics must exist around the scale of O(1TeV) based on the assumption that the Standard Model is valid for scales Q<Λ. This is supported by large corrections to the tree-level Higgs mass at the order of 10 TeV. However, this does not mean that there is no new physics at other scales.
  • #1
Alkass
20
0
Hi

I have been reading that we "believe" that new physics must be O(~1 TeV) and not higher and I am trying unsuccessfully to find some ref for this.

What I do understand is that if we we assume the Standard Model is valid for scales Q<Λ , where
Λ∼O(1TeV).At one-loop level, we get large corrections to the tree-level Higgs mass (m).
at the order of Λ^2=10 TeV since the SM scale is O(100GeV).

So, where the need for O(1TeV) comes from ?

thanks

Alex
 
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  • #2
There must be new physics around that scale, but that does not mean there is no new physics elsewhere.
The assumption that the standard model is valid over those ranges is just that, an assumption. It could be that this assumption is wrong in some way - thus requiring new physics.
 

1. What is the TeV scale in physics?

The TeV (teraelectronvolt) scale is a unit of energy often used in particle physics to describe the energy of particles or interactions. It is equivalent to 1 trillion electron volts (eV) or 1.602 x 10^-7 joules.

2. Why is the TeV scale important in physics?

The TeV scale is important because it is the energy range at which new physics beyond the Standard Model is expected to be revealed. This is because the Standard Model predicts certain particles and interactions that have not yet been observed, and the TeV scale is the energy required to produce these particles.

3. What is the significance of finding new physics at the TeV scale?

Finding new physics at the TeV scale would revolutionize our understanding of the universe and the fundamental forces that govern it. It could potentially answer long-standing questions such as the origin of mass, the existence of dark matter, and the unification of all fundamental forces.

4. What are some theories that predict new physics at the TeV scale?

One popular theory is supersymmetry, which proposes that every particle in the Standard Model has a supersymmetric partner with a higher mass. Another theory is extra dimensions, which suggests that there are more than the three dimensions of space we currently know of.

5. How do scientists search for new physics at the TeV scale?

Scientists use high-energy colliders, such as the Large Hadron Collider (LHC) at CERN, to smash particles together at the TeV scale. By analyzing the resulting collisions, they can search for new particles or interactions that would indicate the presence of new physics at this energy range.

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