Why is the particle process (e-) + (e+) → W+ not possible?
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Replying to @SamuelGWalters
Change needs to be conserved at each vertex.. so vertex doesn’t exist
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Replying to @InertialObservr @SamuelGWalters
But you can get W+ W-, no?
2 replies 0 retweets 0 likes
Replying to @astroparticular @SamuelGWalters
Yes, I believe that could be mediated by the photon at tree level
9:51 PM - 12 Jun 2019
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