Re: Spin 1/2 Baryons Question?
- From: Meir Achuz <Meir.Achuz.2iekfg@xxxxxxxxxxxxxxxxx>
- Date: Wed, 6 Dec 2006 15:26:41 +0000
Jim King Wrote:
Hello,The three fermion quarks in a baryon are in a completely antisymmetric
Could someone please give me an explanation for the fact that spin 1/2
Baryons in the octet
cannot consist of three quarks of the same flavor as the Delta++ for
example.
THX
Jim.
state with respect to color. The Pauli principle then requires that
the spin-space wave function be completely symmetric with respect to
quark interchange for three identical u quarks. The assumption is made
that the spatial wave function is completely symmetric and has no
internal or total orbital angular momentum. This means that the spin
state for the three u quarks must be completely symmetric under quark
interchange, and the quark spins must add up to the spin of the
baryon.
The spin state for 1/2+1/2+1/2=3/2 is completely symmetric and
corresponds to the Delta++.
The spin state for 1/2+1/2+1/2=1/2 has mixed symmetry, and so cannot
exist for three u quarks.
--
Meir Achuz
.
- Follow-Ups:
- Re: Spin 1/2 Baryons Question?
- From: Jim King
- Re: Spin 1/2 Baryons Question?
- References:
- Spin 1/2 Baryons Question?
- From: Jim King
- Spin 1/2 Baryons Question?
- Prev by Date: "Do Virtual Photons Exist?"
- Next by Date: Re: Spin 1/2 Baryons Question?
- Previous by thread: Re: Spin 1/2 Baryons Question?
- Next by thread: Re: Spin 1/2 Baryons Question?
- Index(es):
Relevant Pages
|
|
