Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Particles - subparticles - subsubparticles

  1. Dec 27, 2014 #1
    Why recent particle physicists don’t consider models of particles (quarks, leptons)
    built from more light subparticles?
    Is there problems of principle
    or the available experimental data don’t need similar models?
  2. jcsd
  3. Dec 27, 2014 #2

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2017 Award

    Before you ask why something is so, uiut's a good idea to find out if it is so. The LHC experiments have published about a dozen papers searching for such things. And not finding them.
  4. Dec 28, 2014 #3


    User Avatar
    Gold Member

    As an example, there were the old preon models but the binding energies well exceeded quark, lepton rest masses. More recently, new preon models are coming from q-deformed LQG where "preon configurations" come about by an entirely different mechanism and so does not necessarily suffer from the drawback of the old models.
    Last edited: Dec 28, 2014
  5. Dec 29, 2014 #4


    User Avatar
    Science Advisor

    but afaik there has not been much progress (or even research activities) over the last couple of years
  6. Dec 29, 2014 #5


    User Avatar
    Gold Member

    Yes - afaik.
  7. Dec 31, 2014 #6
    If something is not forbidden, it is possible.

    I find preon hypothesis interesting, but not sufficiently deep.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Particles subparticles subsubparticles Date
B Decays affected by all new particles/fields? Jan 31, 2018
I B, L and Majorana Neutrinos Jan 25, 2018
I Anomaly aggregation and confirming old paper validity Dec 22, 2017
A String vacua and particles? Nov 29, 2017