Understanding open-charm mesons

Details Understanding open-charm mesons Understanding open-charm mesons

2006-10-11

arxiv.org/abs/hep-ph/0610126v1

Int.J.Mod.Phys.A22:550-554,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, to appear in the proceedings of 9th International Workshop on Meson Production, Properties and Interaction (Meson2006

Scientific paper

10.1142/S0217751X07035811

We present a theoretical framework that accounts for the new $D_J$ and $D_{sJ}$ mesons measured in the open-charm sector. These resonances are properly described if considered as a mixture of conventional $P-$wave quark-antiquark states and four-quark components. The narrowest states are basically $P-$wave quark-antiquark mesons, while the dominantly four-quark states are shifted above the corresponding two-meson threshold. We study the electromagnetic decay widths as basic tools to scrutiny their nature.

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