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Lu, Y; Anwar, MN; Zou, BS
X (4260) revisited: A coupled channel perspective
Source PublicationPHYSICAL REVIEW D
KeywordHeavy Tetraquarks Hidden-charm Quark-model y(4260)

We calculate the probabilities of various charmed meson molecules for X (4260) under the framework of the P-3(0) model. The results indicate that, even though heavy quark spin symmetry forbids S wave coupling of D-1(D) over bar to the S-3(1) charmonia [psi(nS)], the D wave coupling is allowed and not negligible. Under this symmetry, the D-1(D) over bar can couple to D-3(1) charmonia [psi(nD)] via both S and D waves, and the overall coupling is around three times larger than that of psi(nS). The X (4260) cannot be a pure molecule but a mixture of a charmonium and various charmed meson components. Since the D-1(D) over bar couples strongly to psi(nD), our results suggest that, in the D-1(D) over bar molecular picture, the charmonium core of X (4260) is psi(nD) instead of psi(nS). As a result, the experimental fact that the R ratio has a dip around 4.26 GeV can be understood in the D-1(D) over bar molecular picture of the X (4260).

Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
Indexed BySCIE
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Lu, Y,Anwar, MN,Zou, BS. X (4260) revisited: A coupled channel perspective[J]. PHYSICAL REVIEW D,2017,96(11):114022.
APA Lu, Y,Anwar, MN,&Zou, BS.(2017).X (4260) revisited: A coupled channel perspective.PHYSICAL REVIEW D,96(11),114022.
MLA Lu, Y,et al."X (4260) revisited: A coupled channel perspective".PHYSICAL REVIEW D 96.11(2017):114022.
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