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Is d* a candidate for a hexaquark-dominated exotic state?
Huang, F; Zhang ZY(张宗烨); Shen PN(沈彭年); Zhang, ZY; Shen, PN; Wang, WL
Source PublicationCHINESE PHYSICS C
AbstractWe confirm our previous prediction of a d* state with I(J(P)) = 0(3(+)) [Phys. Rev. C 60, 045203 (1999)] and report for the first time based on a microscopic calculation that d* has about 2/3 hidden color (CC) configurations and thus is a hexaquark-dominated exotic state. By performing a more elaborate dynamical coupled-channels investigation of the Delta Delta-CC system within the framework of the resonating group method (RGM) in a chiral quark model, we find that the d* state has a mass of about 2.38-2.42 GeV, a root-mean-square radius (RMS) of 0.76-0.88 fm, and a CC fraction of 66%-68%. The last may cause a rather narrow width for the d* which, together with the quantum numbers and our calculated mass, is consistent with the newly observed resonance-like structure (M approximate to 2380 MeV, Gamma approximate to 70 MeV) in double-pionic fusion reactions reported by the WASA-at-COSY Collaboration.
Keywordquark model hexaquark states hidden-color channel
Subject AreaPhysics
WOS Research AreaPhysics, Nuclear ; Physics, Particles & Fields
WOS SubjectPhysics
WOS IDWOS:000357553700001
ADS Bibcode2015ChPhC..39g1001H
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015ChPhC..39g1001H
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015ChPhC..39g1001H/citations
Citation statistics
Cited Times:55 [INSPIRE]
Cited Times:49 [ADS]
Document Type期刊论文
Recommended Citation
GB/T 7714
Huang, F,Zhang ZY,Shen PN,et al. Is d* a candidate for a hexaquark-dominated exotic state?[J]. CHINESE PHYSICS C,2015,39(7):71001.
APA Huang, F,张宗烨,沈彭年,Zhang, ZY,Shen, PN,&Wang, WL.(2015).Is d* a candidate for a hexaquark-dominated exotic state?.CHINESE PHYSICS C,39(7),71001.
MLA Huang, F,et al."Is d* a candidate for a hexaquark-dominated exotic state?".CHINESE PHYSICS C 39.7(2015):71001.
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