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Talk:Photon structure function

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This is an old revision of this page, as edited by Lambiam (talk | contribs) at 12:42, 24 June 2014 (r). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
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Conservation of momentum

Given that a photon does not have a rest frame, while a pair or system of massive particles do, photon disintegration seems to violate the conservation of momentum. Should the article discuss this? 80.220.18.127 (talk) 09:25, 24 June 2014 (UTC)[reply]

In any frame a photon has non-zero momentum. Why should it matter that it doesn't have a rest frame?  --Lambiam 12:42, 24 June 2014 (UTC)[reply]
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