2004/07/14 by Yan-Rui Liu, Y. -R. Liu, Y. -B. Dai +3 · 3 citations
Mathematics · Physics and Astronomy · #Branching fraction #Mathematics #Multiplet #Nuclear physics research studies #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Spectral line #State (computer science) #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevd.70.094009
published as Phys.Rev.D70:094009,2004
arxiv created 2004/07/14 · openalex publication_date 2004/11/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze various possible interpretations of the narrow state DsJ(2632) which lies 100 MeV above threshold. This interesting state decays mainly into Ds\ensuremathη instead of D0K+. If this relative branching ratio is further confirmed by other experimental groups, we point out that the identification of DsJ(2632) either as a cs state or more generally as a 3 state in the SU(3)F representation is probably problematic. Instead, such an anomalous decay pattern strongly indicates DsJ(2632) is a four-quark state in the SU(3)F 15 representation with the quark content (1)/(2√(2))(dsd+sdd+suu+usu\ensuremath-2sss)c. We discuss its partners in the same multiplet and the similar four-quark states composed of a bottom quark BsJ0(5832). Experimental searches of other members especially those exotic ones are strongly called for.