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Massless boson vs massive boson

  1. Dec 23, 2008 #1
    Hi, this might sound stupid, but I have a question.
    why does massless bosons, such as photon, gluon have an infinite range where w and z bosons have finite ranges??
  2. jcsd
  3. Dec 23, 2008 #2

    Vanadium 50

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    The strength of a force goes roughly as [tex]\frac{e^{-mr}}{r^2}[/tex] (in units where [tex]\hbar = c = 1[/tex]). You can see that for a massless boson, it's inverse square, and for a massive boson it falls off faster.
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