TY  - JOUR
AU  - Anwar, Muhammad Naeem
AU  - Lu, Yu
TI  - Heavy quark spin partners of the Y ( 4260 ) in coupled-channel formalism
JO  - Physical review / D
VL  - 104
IS  - 9
SN  - 2470-0010
CY  - Melville, NY
PB  - Inst.
M1  - FZJ-2021-04597
SP  - 094006
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000718037000013
DO  - DOI:10.1103/PhysRevD.104.094006
UR  - https://juser.fz-juelich.de/record/902840
ER  -