Natural SUSY-MSSM and NMSSM gluino mass bounds @LHC

In summary, Gordon Kane suggests that string theory predicts 1.5 TEV gluinos, but so far, no evidence of gluinos has been found in experiments. The current upper limit for gluino masses at 13/14 TeV is unknown, and the implications for natural SUSY and the MSSM are still theoretical. The lack of evidence for gluinos at the LHC does not necessarily disprove natural SUSY and the MSSM, but further research and experiments are needed for confirmation. It is important to approach theoretical predictions with caution and rely on experimental data for conclusions.
  • #1
kodama
978
132
Gordon Kane states that string theory predicts 1.5 TEV Gluinos.
Tommaso Dorigo

No deviation is seen in gluino searches. The limit extends to 1.7 TeV, thus ruling out the region favoured by Gordon Kane in a recent paper.
What's the upper limit gluino masses a 13/14 TEV can produce, and what is the upper limit bounds for Gluino masses for MSSM still to be natural i.e solve the higgs hiearchy problem?

i.e can gluinos with mass of 1.8 TEV or greater be able to still make the MSSM SUSY natural?

if the LHC doesn't find any gluino's what are the implications for natural SUSY and MSSM NMSSM?
 
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  • #2


I would like to clarify that string theory is a theoretical framework that attempts to unify all the fundamental forces and particles in the universe. It is still a work in progress and has not been experimentally proven. Therefore, any predictions made by string theory should be taken with caution and require further experimental evidence.

Regarding the specific statement made by Gordon Kane, it is important to note that it is based on theoretical calculations and not on experimental data. While it may provide some insights into the behavior of gluinos, it should be tested and confirmed through experiments.

In response to the question about the upper limit of gluino masses that can be produced at 13/14 TeV and their implications for natural SUSY and the MSSM, it is important to understand that the LHC experiments have not yet observed any evidence of gluinos. This means that the current upper limit for gluino masses is still unknown and can only be determined through further experiments.

Furthermore, the concept of natural SUSY and the MSSM are also theoretical ideas, and their validity can only be confirmed through experimental data. If the LHC does not find any gluinos, it does not necessarily mean that natural SUSY and the MSSM are not valid theories. It could also mean that the gluino masses are beyond the reach of the current experiments, and further research and experiments are needed to confirm their existence.

In conclusion, as a scientist, I would advise caution in interpreting theoretical predictions and emphasize the importance of experimental data in confirming or disproving theories. The search for gluinos and other particles at the LHC is an ongoing process, and we can only make conclusions based on solid experimental evidence.
 

1. What is the Natural SUSY-MSSM and NMSSM gluino mass bound at the LHC?

The Natural SUSY-MSSM and NMSSM gluino mass bound at the LHC (Large Hadron Collider) is the maximum mass that the gluino particle can have while still being consistent with the principle of naturalness, which states that the fundamental parameters in a theory should not require extreme fine-tuning to produce the observed data. This bound is currently estimated to be around 1.5-2 TeV.

2. How is the Natural SUSY-MSSM and NMSSM gluino mass bound determined?

The Natural SUSY-MSSM and NMSSM gluino mass bound is determined through a combination of theoretical calculations and experimental data from the LHC. Theoretical calculations use the principles of naturalness and supersymmetry to predict the maximum allowable mass for the gluino particle. Experimental data from the LHC is then used to test these predictions and refine the estimated bound.

3. What is the significance of the Natural SUSY-MSSM and NMSSM gluino mass bound?

The Natural SUSY-MSSM and NMSSM gluino mass bound is significant because it provides important constraints on theories beyond the Standard Model of particle physics. It also helps guide the direction of future experiments at the LHC and other colliders, as well as the development of new theoretical models.

4. How does the Natural SUSY-MSSM and NMSSM gluino mass bound compare to other particle mass bounds?

The Natural SUSY-MSSM and NMSSM gluino mass bound is one of the more stringent mass bounds in particle physics. It is comparable to the bound on the top quark mass, which is currently the heaviest known elementary particle. However, it is still well below the mass bounds for the Higgs boson and the hypothetical graviton particle.

5. Are there any experimental or theoretical uncertainties in the Natural SUSY-MSSM and NMSSM gluino mass bound?

Yes, there are uncertainties in both the experimental data and the theoretical calculations that contribute to the Natural SUSY-MSSM and NMSSM gluino mass bound. These uncertainties can arise from factors such as detector limitations, systematic errors, and the complexity of theoretical models. However, efforts are continually being made to reduce these uncertainties and improve the accuracy of the bound.

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