Coupling Constant for $\mathbf{N^*(1535)Nρ}$

Details Coupling Constant for $\mathbf{N^*(1535)Nρ}$ Coupling Constant for $\mathbf{N^*(1535)Nρ}$

2008-02-20

arxiv.org/abs/0802.2802v2

Phys.Rev.C77:058202,2008

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures. To appear in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.77.058202

The value of the $N^*(1535)N\rho$ coupling constant $g_{N^*N\rho}$ derived from the $N^*(1535) \to N\rho \to N \pi \pi$ decay is compared with that deduced from the radiative decay $N^*(1535) \to N \gamma$ using the vector-meson-dominance model. On the basis of an effective Lagrangian approach, we show that the value of $g_{N^*N\rho}$ extracted from the available experimental data on the two decays are consistent, though the error bars are rather large.

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