Microscopic $NN\to N{N}^{\ast }(1440)$ transition potential: Determination of $\pi N{N}^{\ast }(1440)$ and $\sigma N{N}^{\ast }(1440)$ coupling constants

Abstract

A $NN\to N{N}^{\ast }(1440)$ transition potential, based on an effective quark-quark interaction and a constituent quark cluster model for baryons, is derived in the Born-Oppenheimer approach. The potential shows significant differences with respect to those obtained by a direct scaling of the nucleon-nucleon interaction. From its asymptotic behavior we extract the values of $\pi N{N}^{\ast }(1440)$ and $\sigma N{N}^{\ast }(1440)$ coupling constants in a particular coupling scheme

15 eps figures, Accepted for publication in Phys. Rev. C

References in corpus (2)

• Effect of higher orbital angular momenta in the baryon spectrum
• A quark-model based study of the triton binding energy

Cited by in corpus (4)

• Quark-model study of few-baryon systems
• The two pion decay of the Roper resonance
• Diquark-diquark correlations in the ${}^1{S}_0$ $\Lambda \Lambda$ potential
• $\pi B_8{B}_8$ and $\sigma B_8{B}_8$ couplings from a chiral quark potential model