Scientists from various institutions have recently discovered that there might be a break in the application of the Standard Model, particularly with a fundamental principle called the lepton universality (lepton universality asserts that the interactions of leptons are the same, regardless of differences in masses and decay rates)
Their discovery comes from reviewing the data from three separate experiments — BaBar, LHCb and Belle — conducted in the United States, France/Switzerland, and Japan. Flavour-changing neutral currents making and breaking the standard model
All three experiments revealed that the ratio of B meson $B^0\to D^{(*)-}\tau^+\nu_\tau$ decays to $B^0\to D^{(*)-}\mu^+\nu_\mu$ decays may be larger than the standard model predicts
How to make sure that they’re true?
How this would play out?
What confirmation of these results will mean (especially for long term)?
What might cause this disagreement with the standard model?
Why we’re seeing that lepton universality is not satisfied as the Standard Model claims?
Do we need an entirely different model of elementary particle physics (to explain the peculiar behavior of the tau particle)?
Could a change in one lepton affect the others (as these principles often correlate with one another)?
