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Hadron resonances as rovibrational states
Authors:Douglas L. Bernardo  Cristiano C. Bastos  Antonio C. Pav?o
Affiliation:1. Departamento de Química Fundamental, Universidade Federal de Pernambuco, Recife, 50740-540, Brazil2. Departamento de Química, Universidade Federal Rural de Pernambuco, Recife, 52171-900, Brazil
Abstract: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 π meson correspond to the b(1235), π2(1670), b3(2030), and π4(2250) resonances. Its first four radial excitations correspond to the π(1300), π(1800), π(2070), and π(2360) resonances. The orbital excitations of the K meson are interpreted as the K1(1270), K2(1770), K3(2320), and K4(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.
Keywords:excited hadron spectrum   orbital and radial resonances   rovibrational states
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