Does B^0 Meson Decay at LHC Rule Out Low-Energy SUSY?

In summary, the decay of B0 meson into two muons at the 3 ppb level does not necessarily imply that the test for low-energy SUSY has failed. The measurement of the branching ratio for ##B_s\to\mu^+\mu^-## is considered a test of the Standard Model rather than low-energy SUSY. However, the uncertainty of the result means that further updates are needed for a clearer understanding. Additionally, while ##B_s\to\mu^+\mu^-## is a good indicator for low-energy SUSY, it may only be applicable in certain parameter spaces. Therefore, the agreement with the SM expectation does not rule out the possibility of low-energy SUSY, but other areas should also be
  • #1
AbdulQat
4
0
Does the decay of B0 meson into two muons at the 3 ppb level,
imply that this test for low-energy SUSY has failed?
 
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  • #2
I think that the measurement of the branching ratio for ##B_s\to\mu^+\mu^-## should be seen as a test of the SM rather than of low-energy SUSY. In this context the SM seems to have once again passed this test, although the uncertainty of the result means that we still need to wait for future updates before the real picture becomes clear.

In the context of low-energy SUSY ##B_s\to\mu^+\mu^-## is a good place to find a hint, but only for some particular part of parameter space, e.g. large ##\tan\beta## etc. So the agreement of this single result with the SM expectation doesn't necessarily mean that low-energy SUSY isn't a reality, we may just need to look elsewhere before we find it.
 

Related to Does B^0 Meson Decay at LHC Rule Out Low-Energy SUSY?

1. What is the B^0 meson and why is it important in low-energy SUSY?

The B^0 meson is a subatomic particle that is important in low-energy supersymmetry (SUSY) because its decay can provide evidence for the existence of supersymmetric particles at lower energy levels. It is made up of a bottom quark and an anti-up quark and is often used as a probe for studying the properties of SUSY models.

2. How does the LHC rule out low-energy SUSY through the decay of B^0 meson?

The Large Hadron Collider (LHC) is a particle accelerator that collides protons at high energies, creating a variety of subatomic particles. If low-energy SUSY exists, the LHC would be able to produce these particles, including the B^0 meson. However, if the B^0 meson decays in a way that is inconsistent with predictions from low-energy SUSY models, it can rule out the existence of low-energy SUSY.

3. What are the current findings from LHC regarding the decay of B^0 meson and low-energy SUSY?

As of now, the LHC has not found any evidence for the decay of B^0 meson that is consistent with low-energy SUSY predictions. This does not necessarily rule out the existence of low-energy SUSY, but it does put constraints on the parameters and possibilities of low-energy SUSY models.

4. Are there alternative theories to low-energy SUSY that can explain the decay of B^0 meson?

Yes, there are alternative theories to low-energy SUSY that can also explain the decay of B^0 meson in a way that is consistent with current observations from the LHC. These include models such as split SUSY, gauge mediated SUSY breaking, and composite Higgs models.

5. What implications does the decay of B^0 meson have on the search for low-energy SUSY at the LHC?

The decay of B^0 meson at the LHC has important implications for the search for low-energy SUSY. If the LHC continues to find no evidence for low-energy SUSY, it could mean that low-energy SUSY is not a valid theory and other models must be explored. On the other hand, if the LHC does find evidence for low-energy SUSY, it would provide strong support for the existence of supersymmetric particles at lower energy levels.

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