Strong Decays of sc Mesons in the Covariant Oscillator Quark Model with the \widetildeU(4)DS ×O(3,1)L-Classification Scheme

Abstract

We investigate the strong decays with one pseudoscalar emission of charmed strange mesons in the covariant oscillator quark model. The wave functions of composite sc mesons are constructed as the irreducible representations of the e U (4) DS × O(3, 1) L . Through the observed mass and results of decay study we discuss a novel assignment of observed charmed strange mesons from the viewpoint of the e U (4) DS × O(3, 1) L -classification scheme. It is shown that D * s0 (2317) and D s1 (2460) are consistently explained as ground state chiralons, appeared in the e U (4) DS × O(3, 1) L scheme. Furthermore, it is also found that recentlyobserved D * s1 (2710) could be described as first excited state chiralon. We treated u −,s (0), being independent of u +,s (0), as a fundamental building block to construct the composite hadrons. Possible physical origin of ρ 3 = −1 component is discussed in Ref. 7). * * ) The COQM have been successfully applied to various (static and non-static) problem of hadrons for many years. As relatively recent application, for example, see Ref. 8) and references therein.