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

Charge and mass

  1. Jun 28, 2008 #1
    The 3 pions have different masses and we say this so because of the electro magnetic energy.if this is so then we can never measure a mass because the magnitude of the EM energy that a particle recieves depends on the charged particles around it.
    if you help with this dilemma i would be grateful.
  2. jcsd
  3. Jun 28, 2008 #2


    User Avatar
    Science Advisor

    The small mass differences within isotopic multiplets arise from four energies of the quarks within the particles.
    1. Quark mass differences.
    2. quark-quark Coulomb energies.
    3. q-q magnetic moment energies.
    4. QCD q-q spin-spin energies.
  4. Jun 29, 2008 #3


    User Avatar
    Science Advisor
    Gold Member

    I was under the impression pi+ and pi- have the same mass. pi+ made from up quark and down anti-quark, while pi- consists of up anti-quark and down quark.
  5. Jun 30, 2008 #4


    User Avatar
    Science Advisor
    Homework Helper

    yes pi- and p+ have same mass, but pi0 has different mass.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?