Re: Pion decay
From: EjP (nospam_at_hackers.are.bad)
Date: 12/07/04
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Date: Tue, 07 Dec 2004 07:04:30 -0600
Warren Wolfe wrote:
> Can anyone tell me the specific quark interactions that take place in pion
> decay? The end products are all leptons (a muon and a neutrino) so what
> becomes of the up and anti-down quarks? My guess is something like u -> d +
> W(+) and the d annihilates with the anti-d.
You don't need the extra step. The incoming dbar is equavalent to an
outgoing d. u+ dbar -> W+ -> mu+ + nu_mu as described here:
http://hyperphysics.phy-astr.gsu.edu/hbase/particles/piondec.html
> The W(+) can decay to a muon
> plus a neutrino, but what are the by products of the annihilation process?
The muon and the neutrino *are* the byproducts of the decay process.
-E
> Or is what happens completely different?
>
> Thanks for any help,
> Warren Wolfe
>
>
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