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Question about particle physics in general

  1. Jun 2, 2013 #1
    So I read that fermions can be defined as "matter particles," while bosons can be defined as "force carrier particles." I read further that fermions can be divided into quarks and leptons.
    However, apparently mesons are considered bosons, as a consequence of their spins. Does that mean that, despite being composed of two quarks, a fermion, mesons are bosons?
  2. jcsd
  3. Jun 2, 2013 #2


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    This categorization is incorrect, and is not general.

    Fermions are "particles" with integral 1/2 spins, i.e. spin of 1/2, 3/2, 5/2, etc. An electron is a fermion, and it CANNOT be divided into quarks and leptons.

    A boson has integral spin, i.e. 0, 1, 2, 3, etc. A photon is a boson, it definitely is not composed of 2 quarks.

  4. Jun 2, 2013 #3
    So the particles defined by their spin, and not by whether they are matter particles or force particles?
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