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标题：Comprehensive Four-Quark Interpretation of Ds(2317), Ds(2457), and Ds(2632)
来源：《物理评论快报》2004年93卷23期 文章号232001
作者：中科院理论物理研究所 Yu-Qi Chen（陈裕启）
南开大学物理系 Xue-Qian Li（李学潜）
Research Fronts: NARROW MESON STATE DECAYING; NARROW CHARM-STRANGE MESON D-SJ(+)(2632)-> NARROW RESONANCE; B DECAYS; 46 GEV/C(2) DECAYING
领域：物理
摘要：The recently observed new member of the charm-strange family Ds(2632), which has a surprisingly narrow width, is challenging our theory. Ds(2317) and Ds(2457), which were observed earlier, have similar behaviors and receive various theoretical explanations. Some authors use the heavy hadron chiral effective theory to evaluate heavy-light quark systems and obtain a reasonable evaluation on the masses of Ds(2317) and Ds(2457). An alternative picture is to interpret them as four-quark or molecular states. In this work, we are following the latter and propose a unitive description for all three new members, Ds(2632), Ds(2317), and Ds(2457), and, at least, so far our picture is consistent with the data.
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