The coupled-channel analysis of the D and D_s mesons

Details The coupled-channel analysis of the D and D_s mesons The coupled-channel analysis of the D and D_s mesons

2004-09-30

arxiv.org/abs/hep-ph/0409361v1

Phys.Rev.D70:114013,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 2 figures

Scientific paper

10.1103/PhysRevD.70.114013

The shift of the p-wave $D_s$ meson mass due to coupling to the DK channel is calculated without fitting parameters using the chiral Lagrangian. As a result the original $Q\bar q$ mass 2.490 MeV generically calculated in the relativistic quark models is shifted down to the experimental value 2317 MeV. With the same Lagrangian the shift of the radial excited $1^-$ level is much smaller, while the total width $\Gamma > 100$ MeV and the width ratio is in contradiction with the $D^*(2632)$ state observed by SELEX group.

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