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

Particle octet

  1. Apr 24, 2008 #1
    Would anyone like to tell me if I did this right? see attached .gif. It's an exercise in a book I'm reading, about explaining why there aren't any spin 1/2 particles with uuu, ddd, or sss quarks, 1 each of uud, uus, etc., and 2 of uds quarks: the particle octet.

    Attached Files:

  2. jcsd
  3. Apr 24, 2008 #2


    User Avatar

    I can't make out the thumbnail or make sense of it.
    You can't have three u quarks in a spin 1/2 state, because the spin 1/2 state has mixed symmetry, and only purely symmetric states are allowed for three identical quarks in a completely symmetric spatial state.
  4. Apr 24, 2008 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The first statement makes no sense. You say that quarks follow Bose statistics even though they are fermions!!!:yuck:

    Of course they follow Fermi-Dirac statistics!!
    But it's a bit complicated because the total wavefunction has a spin dependence, a spatial dependence but a colour dependence as well. All this must be taken into account.
  5. Apr 24, 2008 #4
    Last edited: Apr 24, 2008
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Particle octet Date
I For a particle on a sphere, is zero energy possible? Yesterday at 12:56 PM
I One particle and two-slits Yesterday at 12:00 AM
I Virtual particles in Feynman diagrams Friday at 8:55 AM
I Why is there an arrow mediating a process in a Feynman diagram? Thursday at 2:14 PM
The Gluon Octet Feb 27, 2012