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Lepton Universality In Question, a Standard Model Assumption

Charliemopps writes: "Over the past few years, more and more experiments have started to question one of the core assumptions of the standard model: Lepton Universality. Simply put, the weak nuclear force is assumed to work equally on all Leptons (electron, muon and tau). Two years ago The Babar experimental collaboration reported that measurements indicated this may not have been the case. But the measurements were not accurate enough to be definitive.

Now, a report from The LHC shows that they have analyzed their entire dataset of proton-proton collisions and found a rather large discrepancy. These measurements are still not all that accurate. These decays happen so rarely that even with this huge data set there is still about a 1% change they are incorrect. One explanation for such measurements is an as-yet-undiscovered, charged Higgs particle. It would have to be extremely heavy: greater than 109GeV possibly even as high as 150GeV. This is predicted by some models outside of the Standard Model, like Supersymmetry."

5 of 62 comments (clear)

  1. No Problem: by Tablizer · · Score: 4, Funny

    To "fix" it, just add one or more of the following to the model:

    * More turtles
    * More nested epicycles
    * More dimensions
    * Invent dark [something] to plug it
    * Say God did it

    Profit!

    1. Re:No Problem: by Anonymous Coward · · Score: 1, Funny

      We can invent a dark, energy-less, massless particle that travels backwards in time and only interacts with other particles on Tuesday afternoons. Got to keep propping up the standard "model".

  2. "still about a 1% change" by Anonymous Coward · · Score: 2, Funny

    Change you can believe in!

    "chance", you idiots!!!

  3. Wrong universality? by Trogre · · Score: 3, Funny

    When I grow up I'm going to Lepton University!

    No wait...

    --
    "Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
  4. Re:Particles are more unique than thought by Anonymous Coward · · Score: 3, Funny

    Sounds like the simulation we are living in uses some de-duplication in the file system.to save space.