摘要
A rovibrational model,including anharmonic,centrifugal,and Coriolis corrections,is used to calculate π,K,N,and ∑ orbital and radial resonances.The four orbital excitations of the n meson correspond to the/?(1235),ti2(1670),63(2030),and π4(2250)resonances.Its first four radial excitations correspond to the π(1300),π(1800),π(2070),and 7t(2360)resonances.The orbital excitations of the K meson are interpreted as the K_(1)(1270),K_(2)(1770),K_(3)(2320),and K_(4)(2500)resonances;its radial excitations correspond to the K(1460)and K(1830)resonances.The N orbital excitations are identified with the N(1520),N(1680),N(2190),N(2220),and N(2600)resonances.The first four radial excitations of the N family correspond to the N(1440),N(1880),N(2100),and N(2300)resonances.The orbital excitations of the ∑ baryon are associated with the ∑(1670),∑(1915),∑(2100),and ∑(2250)resonances,whereas its radial excitations are identified with the ∑(1660),∑(1770),and ∑(1880)resonances.The proposed rovibrational model calculations show a good agreement with the corresponding experimental values and allow for the prediction of hadron resonances,thereby proving to be useful for the interpretation of excited hadron spectra.
基金
Supported by the Brazilian funding agencies CNPq-Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and CAPES-Coordenapao de Aperfeicoamento de Pessoal de Nivel Superior。
