Spin of Particles Detected at LHC: Higgs Boson and Supersymmetry

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SUMMARY

The discussion centers on the implications of detecting a particle with spin-2 at the Large Hadron Collider (LHC) and its relation to the Higgs boson. It is established that the standard model Higgs boson and the five Higgs particles in the simplest supersymmetry (SUSY) models all possess spin-0. A spin-2 particle is not recognized as a Higgs particle, as it would contradict the fundamental properties of the Higgs field, which is a spin-0 condensate. The presence of a non-zero spin would lead to a violation of Lorentz invariance, a critical aspect of modern physics.

PREREQUISITES
  • Understanding of the Standard Model of particle physics
  • Familiarity with supersymmetry (SUSY) concepts
  • Knowledge of particle spin and its implications in quantum field theory
  • Basic grasp of Lorentz invariance and its significance in physics
NEXT STEPS
  • Research the properties of the Higgs boson in the Standard Model
  • Explore the implications of supersymmetry (SUSY) in particle physics
  • Study the role of spin in quantum field theory
  • Investigate the concept of Lorentz invariance and its relevance to particle physics
USEFUL FOR

Particle physicists, theoretical physicists, and students studying advanced concepts in quantum field theory and the Standard Model.

ranrod
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I tried searching through but didn't find this asked.
If the spin of the particle detected at LHC comes back as 2, for instance, does it mean it's not a higgs boson?
There are 5 higgs in supersymmetry, do they all have spin 0?
 
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The standard model Higgs is necessarily spin-0 as are the 5 Higgses of the simplest SUSY models. As for whether a spin-2 particle could be a Higgs particle of some sort, I can say that I've never heard of such a thing; but, you'd need to get someone who has more familiarity with spin-2 in field theory to say for sure whether it's possible for a spin-2 particle to be responsible for symmetry breaking.
 
In the standard model, all of the quantum numbers of the Higgs particle are zero - for a very good reason. The Higgs field is a condensate of Higgs particles that permeates all space. If the Higgs had nonzero spin, so would the vacuum, and the effect would be to break Lorentz invariance.
 

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