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1. chinaXiv:201709.00051 [pdf]

Possible Interpretations of D+sJ (2632) If It Really Exists

Yuan-Ben Dai; Chun Liu; Y.-R. Liu; Shi-Lin Zhu
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

We analyze various possible interpretations of the narrow state D+sJ (2632) observed by SELEX Collaboration recently, which lies above threshold and has abnormal decay pattern. These interpretations include: (1) several versions of tetraquarks; (2) conventional cs? meson such as the first radial excitation of Ds(2112) with abnormally large SU(3) symmetry breaking; (3) conventional cs? meson with abnormally large η1 coupling; (4) heavy hybrid meson. We discuss the physical implications of each interpretation. For example, if the existence of D +sJ (2632) is confirmed as the first radial excitation of Ds(2112) by other experiments, it will be helpful to look for (1) its SU(3) flavor partners D 0,+J(2530); (2) its B-meson analogues B0,+J(5840), B+sJ (5940); (3) S-wave two pion decaymodes.

submitted time 2017-09-17 Hits357Downloads223 Comment 0

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