Eur. Phys. J. A (2004) 21: 501-506
https://doi.org/10.1140/epja/i2004-10010-4

Decay properties of new D-mesons

¹ Petersburg Nuclear Physics Institute, 188300, St.Petersburg, Russia
² Institute for Theoretical Physics II, Ruhr University, 44801, Bochum, Germany

^* e-mail: azimov@thd.pnpi.spb.ru

Abstract

We consider radiative and pionic decays of the new D _s -mesons in the framework of a phenomenologically motivated approach. Present data on ratios of the two kinds of decays can be described without explicitly using a 4-quark component. Most probably, the isospin violation in decays of different D _s -mesons is not universal, and the binding potential should be different from Coulombic. New precise measurements may provide further clarification for the nature of the D _s excited states.