Journal Article

FZJ-2021-04597

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Heavy quark spin partners of the Y ( 4260 ) in coupled-channel formalism

Anwar, M. N. (Corresponding author)FZJ* ; Lu, Y.FZJ*

2021
Inst. Melville, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/29220  doi:10.1103/PhysRevD.104.094006

Abstract: 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.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)

Appears in the scientific report 2021

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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