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Vijande Asenjo, Javier; Valcarce Mejía, Alfredo; Fernández González, Francisco | |||
Aquest document és un/a article, creat/da en: 2008 | |||
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We study the B meson spectroscopy allowing the mixture of conventional P wave quark-antiquark states and four-quark components. A similar picture was used to describe the new D(J) and D(sJ) open-charm mesons. The four-quark components shift the masses of some positive parity B(sJ) states below their corresponding isospin preserving two-meson threshold and therefore they are expected to be narrow. Electromagnetic decay widths are analyzed. | |||
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