Open-charm meson spectroscopy
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Vijande Asenjo, Javier; Fernández González, Francisco; Valcarce Mejía, Alfredo
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Aquest document és un/a article, creat/da en: 2006
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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, being broad resonances. We study the electromagnetic decay widths as basic tools to scrutiny their nature. The proposed explanation incorporates in a natural way the most recently discovered mesons in charmonium spectroscopy. |
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