Open-charm meson resonances with negative strangeness

摘要

We study heavy-light meson resonances with quantum numbers J(P) = 0(+) and J(P) = 1(+) in terms of the non-linear chiral SU(3) Lagrangian. Adjusting the free parameters that arise at subleading order to reproduce the mass of the D(2420) resonance as well as the new states established recently by the BaBar, CLEO and BELLE Collaborations we obtain refined masses for the anti-triplet and sextet states. Bound states of antikaons at the D(1867) and D(2008) mesons are predicted at 2352 MeV (J(P) = 0(+)) and 2416 MeV (J(P) = 1(+)). In addition we anticipate a narrow scalar state of mass 2389 MeV with (I,S) = (1/2, 0). (C) 2004 Elsevier B.V. All rights reserved. [References: 52]