Isospin violation in $φ, J/ψ, ψ^\prime \to ωπ^0$ via hadronic loops

Details Isospin violation in $φ, J/ψ, ψ^\prime \to ωπ^0$ via hadronic loops Isospin violation in $φ, J/ψ, ψ^\prime \to ωπ^0$ via hadronic loops

2007-06-04

arxiv.org/abs/0706.0384v3

Phys.Rev.D77:014010,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version resubmitted to PRD; Additional loop contributions included; Conclusion unchanged

Scientific paper

10.1103/PhysRevD.77.014010

In this work, we study the isospin-violating decay of $\phi\to \omega\pi^0$ and quantify the electromagnetic (EM) transitions and intermediate meson exchanges as two major sources of the decay mechanisms. In the EM decays, the present datum status allows a good constraint on the EM decay form factor in the vector meson dominance (VMD) model, and it turns out that the EM transition can only account for about $1/4\sim 1/3$ of the branching ratio for $\phi\to \omega\pi^0$. The intermediate meson exchanges, $K\bar{K}(K^*)$ (intermediate $K\bar{K}$ interaction via $K^*$ exchanges), $K\bar{K^*}(K)$ (intermediate $K\bar{K^*}$ rescattering via kaon exchanges), and $K\bar{K^*}(K^*)$ (intermediate $K\bar{K^*}$ rescattering via $K^*$ exchanges), which evade the naive Okubo-Zweig-Iizuka (OZI) rule, serve as another important contribution to the isospin violations. They are evaluated with effective Lagrangians where explicit constraints from experiment can be applied. Combining these three contributions, we obtain results in good agreement with the experimental data. This approach is also extended to $J/\psi(\psi^\prime)\to \omega\pi^0$, where we find contributions from the $K\bar{K}(K^*)$, $K\bar{K^*}(K)$ and $K\bar{K^*}(K^*)$ loops are negligibly small, and the isospin violation is likely to be dominated by the EM transition.

Affiliated with

Also associated with

No associations

Rating

Isospin violation in $φ, J/ψ, ψ^\prime \to ωπ^0$ via hadronic loops 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 Isospin violation in $φ, J/ψ, ψ^\prime \to ωπ^0$ via hadronic loops, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isospin violation in $φ, J/ψ, ψ^\prime \to ωπ^0$ via hadronic loops will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-726640