Strong decay $Δ^{++} \to pπ$ with light-cone QCD sum rules

Details Strong decay $Δ^{++} \to pπ$ with light-cone QCD sum rules Strong decay $Δ^{++} \to pπ$ with light-cone QCD sum rules

2007-07-25

arxiv.org/abs/0707.3736v7

Eur.Phys.J.C57:711-718,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 2 figures, 7-version

Scientific paper

10.1140/epjc/s10052-008-0699-y

In this article, we calculate the strong coupling constant $g_{\Delta N\pi}$ and study the strong decay $\Delta^{++} \to p\pi$ with the light-cone QCD sum rules. The numerical value of the strong coupling constant $g_{\Delta N\pi}$ is consistent with the experimental data. The small discrepancy maybe due to failure to take into account the perturbative $\mathcal {O}(\alpha_s)$ corrections.

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