Decays of radially excited vector mesons ρ′ and ω′ in the extended NJL model

INTERNATIONAL JOURNAL OF MODERN PHYSICS A(2024)

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摘要
The decay widths of rho ' -> pi pi, omega pi, rho eta, omega ' -> rho pi, omega eta and pi ' -> rho pi are recalculated within the extended Nambu-Jona-Lasinio (NJL) quark model. It is shown that the mass of rho '(1450) meson derived in the NJL model agrees with the one given in Particle Data Group tables but significantly deviates from the recent result of CMD-3 collaboration. Comparisons with earlier theoretical results are presented.
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关键词
Chiral Lagrangians,radially excited mesons
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