The strong $\rho NN$ coupling derived from QCD

Abstract

We study the two point correlation function of two nucleon currents sandwiched between the vacuum and the rho meson state. The light cone QCD sum rules are derived both for $\rho NN$ vector and tensor couplings simultaneously. The contribution from the excited states and the continuum is subtracted cleanly through the double Borel transform with respect to the two external momenta, $p_1^2$, $p_2^2=(p-q{)}^2$. Our results are $g_{\rho }=(2.5\pm 0.2)$, $κ_ρ=(8.0\pm 2.0), in good agreement with the values used in the nuclear forces.

Several references and discussion of final results added, final version to appear in Phys. Rev. C

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• Radiative Corrections to the Decay $B\to \pi e\nu$ and the Heavy Quark Limit
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Cited by in corpus (14)

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• Analysis of the vertexes ${\Omega }_Q^{\ast }{\Omega }_Q\varphi$ and radiative decays ${\Omega }_Q^{\ast }\to {\Omega }_Q\gamma$
• Vector meson-baryon strong coupling contants in light cone QCD sum rules
• Charge density of light exotic nuclei and $\rho NN$ tensor coupling
• The $\eta NN$ coupling constant
• The phi NN coupling from chiral loops
• Analysis of the new Crystal Ball data on $K^{-}p\to {\pi }^0\Lambda$ reaction with beam momenta of $514\sim 750$ MeV/$c$
• Analysis of the vertices $\rho NN$, $\rho \Sigma \Sigma$ and $\rho \Xi \Xi$ with light-cone QCD sum rules
• Meson Emission Model of Psi to N Nbar m Charmonium Strong Decays
• $\pi \Delta \Delta$ coupling constant
• The $\rho NN$ coupling with direct coupling and loops
• The $\omega NN$ couplings derived from QCD sum rules
• $\rho$-mass Modification in $H{e}^3$ - a Signal of Restoration of Chiral Symmetry or Test for Nuclear Matter Models ?
• $\rho$ - nucleus bound states in Walecka model