High Energy Particle Physics

    

As Spinor χ = a| ↑> +b| ↓> is Physical in SU (2) Spin Space, Then Why is Isospinor ψ = A|p > +b|n > Unphysical in SU (2) Isospin Space?

Authors: Syed Afsar Abbas

A spin angular momentum state with a polarization orientation in any ar- bitrary direction can be constructed as a spinor in the SU(2)-spin space as χ = a| ↑> +b| ↓>. However the corresponding isospinor in the SU(2)-isospin space, ψ = a|p > +b|n > is discarded on empirical grounds. Still, we do not have any sound theoretcal understanding of this phenomenon. Here we provide a consistent explanation of this effect.

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[v1] 2017-05-18 01:47:51

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