Abstract
Although assigning D s0 +(2317) to the I 3 = 0 component $ \hat{F}_{I}^{+}$ of iso-triplet four-quark mesons is favored by experiments, its neutral and doubly charged partners have not yet been observed. It is discussed why they were not observed in inclusive e + e -→c¯ experiment and that they can be observed in B decays.
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More From: The European physical journal. A, Hadrons and nuclei
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