%0 Journal Article
%A Anwar, Muhammad Naeem
%A Lu, Yu
%T Heavy quark spin partners of the Y ( 4260 ) in coupled-channel formalism
%J Physical review / D
%V 104
%N 9
%@ 2470-0010
%C Melville, NY
%I Inst.
%M FZJ-2021-04597
%P 094006
%D 2021
%X The charmoniumlike state Y(4260) is described as predominantly a D1¯D molecule in a coupled-channel quark model [Phys. Rev. D 96, 114022 (2017)]. The heavy quark spin symmetry (HQSS) thus implies the possible emergence of its heavy quark spin partners with molecular configurations as D1¯D∗ and D∗2¯D∗ below these charmed mesons’ thresholds. We analyze the probabilities of various intermediate charmed meson loops for JPC=1−− exotic state Y(4360) and find that the channel D1¯D∗ couples more strongly around its mass regime, and the coupling behavior remains the same even if the mass of Y(4360) is pushed closer to D1¯D∗ threshold. This enlightens that the most favorable molecular scenario for the Y(4360) could be D1¯D∗, and hence it can be interpreted as HQSS partner of the Y(4260). We also find the strong coupling behavior of D∗2¯D∗ channel with the ψ(4415), which makes it a good candidate for a dominant D∗2¯D∗ molecule. We discuss the important decay patterns of these resonances to disentangle their long- and short-distance structures.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000718037000013
%R 10.1103/PhysRevD.104.094006
%U https://juser.fz-juelich.de/record/902840