23,259 research outputs found

    Strong decays of DsJ(2317)D_{sJ}(2317) and DsJ(2460)D_{sJ}(2460)

    Full text link
    With the identification of (DsJ(2317),DsJ(2460)D_{sJ}(2317), D_{sJ}(2460)) as the (0+0^+, 1+1^+) doublet in the heavy quark effective field theory, we derive the light cone QCD sum rule for the coupling of eta meson with DsJ(2317)DsD_{sJ}(2317) D_s and DsJ(2460)DsD_{sJ}(2460) D_s^{*} . Through ηπ0\eta-\pi^0 mixing we calculate their pionic decay widths, which are consistent with the experimental values (or upper limits). Combining the radiative decay widths derived by Colangelo, Fazio and Ozpineci in the same framework, we conclude that the decay patterns of DsJ(2317,2460)D_{sJ}(2317, 2460) strongly support their interpretation as ordinary csˉc \bar s mesons.Comment: Comments and suggestions welcome
    corecore