P violation in weak force & BSM

In summary, the conversation revolves around the possibility of parity being violated by the weak force and the role of mirror matter in restoring symmetry. There is no evidence to suggest that symmetry breaking from any higher group could form mirror matter. However, some physicists hypothesize that the E8 x E8 gauge group corresponds to two universes, with each group describing its own universe and providing a potential explanation for dark matter.
  • #1
cube137
361
10
some inquiries

1. Is it possible parity being violated by the weak force is because of further symmetry breaking of SU(2)xU(1) (besides the higgs field) ? Any papers about this?

2. I read in wiki that that mirror matter can recover the symmetry. What else (beside mirror matter) could restore the symmetry as it doesn't make sense something could be violated in a perfect gauge symmetry.

3. Lastly. If there were mirror matter.. Has anyone tried to tweak it so it can be used possible solution to the Hierarchy Problem... the mirror matter able to cancel some quantum contributions to avoid turning Higgs mass to Planck mass? In the following:

http://indico.cern.ch/event/217732/contributions/1518949/attachments/350025/487960/lykken_MITP.pdf

"• If you want to retain naturalness, then given that the LHC has indeed found
a seemingly fundamental lightish Higgs, you are pushed to invoke some
kind of heavy partners of SM particles to cancel the apparent quadratic
sensitivity to the cut-off

• Thus:
• SUSY (partners have different spin, symmetry enforces cancellations)
• Little Higgs (partners have same spin, symmetry enforces cancellations)
• Lee-Wick SM (partners have same spin but are kinetic ghosts)"

4. Could mirror matter be made into kinetic ghosts?
 
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  • #2
1. No. No.
2. Nothing, this is an observed fact.
3. No.
4. No.

You probably should learn the SM before speculating about beyond the SM.
 
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Likes websterling
  • #3
Mirror matter is supposed to come from the 2nd group of the higher symmetry E8xE8 gauge group. What other symmetry groups can form mirror matter?
Earlier I was thinking the mirror matter just formed without symmetry breaking from any higher group.. or just part of the SU(2)xU(1). I wonder if this latter is still possible. Any mirror matter experts (or semi experts) here? As review about E8 x E8. https://universe-review.ca/R15-18-string04.htm

"As for the other half of the E8 X E8 gauge group, some physicists hypothesize that this gauge group corresponds to two universes, each belonging to the smaller symmetry pattern E8 by itself. Thus, in addition to our own universe, there is a new, hypothetical universe, a shadow world as it were. Other than the gravitational force, each E8 group describes its own universe, its own pattern of particles and forces. The elementary particles in one group are effectively invisible, or hidden, when viewed from the other group. This hypothesis could provide an explanation for dark matter, which is unseen but is responsible for holding astronomical objects together by gravitational force."
 

1. What is P violation in weak force?

P violation, or parity violation, is a phenomenon in which the mirror image of a physical system behaves differently than the original system. In the weak force, P violation refers to the violation of parity conservation, which states that the laws of physics should remain the same when the direction of space is reversed. However, P violation in weak force has been observed in certain interactions, such as in the decays of subatomic particles, indicating that the weak force does not obey parity conservation.

2. How does P violation in weak force relate to the Standard Model of particle physics?

The Standard Model is the current theory that describes the fundamental particles and forces in the universe. P violation in weak force is a crucial aspect of the Standard Model, as it helps explain the behavior of subatomic particles and their interactions. The Standard Model predicts P violation in weak force through the presence of the Higgs field, which gives particles mass and allows for P violation to occur.

3. What is the significance of P violation in weak force?

P violation in weak force is significant because it provides evidence for the asymmetry between matter and antimatter in the universe. According to the Standard Model, equal amounts of matter and antimatter were created during the Big Bang, yet today, only matter exists. P violation in weak force is one of the mechanisms that could have led to this asymmetry, known as CP violation.

4. How is P violation in weak force being studied?

Scientists are studying P violation in weak force through high-energy particle accelerators, such as the Large Hadron Collider. By colliding particles at high speeds, scientists can observe the products of these collisions and look for P violation. Additionally, experiments are being conducted to measure the properties of certain subatomic particles, such as the neutron, to further understand P violation in weak force.

5. Are there any theories beyond the Standard Model that could explain P violation in weak force?

Yes, there are several theories beyond the Standard Model that could potentially explain P violation in weak force. One such theory is Supersymmetry, which proposes the existence of superpartners for each particle in the Standard Model, including a superpartner for the Higgs boson. Another theory is Grand Unified Theories, which attempt to unify all the fundamental forces, including the weak force, into a single framework.

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