Massless boson vs massive boson

  • Thread starter hanks721
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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??
 

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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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