Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-07-21
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, Revtex file, 3 figs
Scientific paper
We illustrate that both of massless pseudoscalar meson fields and constitutent quark fields are dynamical field degrees of freedom in energy region between chiral symmetry spontaneously broken scale and quark confinement scale. This physical configuration yields a renormalization running axial coupling constant $g_{_A}(\mu)$. The one-loop renormalization prediction $g_{_A}(\mu=m_{_N})=0.75$ and $g_{_A}(\mu=m_\pi)=0.96$ agree with $\beta$ decay of neutron and $\pi^0\to\gamma\gamma$ respectively. We also calculate $\rho^\pm\to\gamma\pi$ and $\omega\to\gamma\pi$ decays up to the next to leading order of $N_c^{-1}$ expansion and including all order effects of vector meson momentum expansion. The results strongly support prediction of renormalization running, $g_{_A}(\mu=m_\rho)=0.77$.
Wang Xiao-Jun
Yan Mu-Lin
No associations
LandOfFree
Runing of Axial Coupling Constant does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Runing of Axial Coupling Constant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Runing of Axial Coupling Constant will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-349619