Ds1*(2710) and Dsj*(2860) in the Ũ(12)×O(3,1)‐scheme

In order to classify the charmed‐strange mesons, including puzzling Ds0*(2317) and Ds1(2460), and recently observed Ds1*(2710) ans Dsj*(2860), we employ the Ũ(12)×O(3,1) level‐classification scheme of hadrons proposed and developed by us in recent years. The scheme has a new degree of freedom, SU(2)ρ, which leads to a number of extra states out of conventional SU(6)‐scheme, named chiralons. Applying this novel classification scheme, we investigate the strong decays of S‐ and P‐wave cs mesons with one pseudoscalar emission by using the covariant oscillator quark model. As a result it is shown that Ds0*(2317) and Ds1(2460) are described as 1S0χ and 3S1χ chiralons, forming the SU(2)ρ doublet with the ground‐state Ds and Ds*, respectively. Furthermore, the observed decay properties of Ds1*(2710) is consistently explained as the vector chiralon 1P1χ. On the other hand, it is also found that the controversial narrow state, Dsj*(2860), does not fit as predicted properties of our P‐wave vector chiralon.