Understanding the internal structures of X(4140), X(4274), X(4500) and X(4700)

Chen, Hua-Xing; Cui, Er-Liang; Chen, Wei; Liu, Xiang; Zhu, Shi-Lin

doi:10.1140/epjc/s10052-017-4737-5

Cited by 205 publications

(300 citation statements)

References 60 publications

(104 reference statements)

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“…From the calculation with the QCD sum rule in Ref. [29], one may assign the X(4500) and X(4700) as the two D-wave cscs tetraquark states of J P = 0 + . In another analysis [30,31], the former state is assigned as the first radially excited state of the [ proposed that the X(4140) and the X(4274) belong to the ground state 1S-multiplet of diquark-antidiquark tetraquarks while the X(4500) and the X(4700) are radially excited 2S states.…”

Section: +219mentioning

confidence: 99%

X(4140) , X(4270) , X<

et al. 2016

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In the simple color-magnetic interaction model, we investigate possible ground cscs tetraquark states in the diquark-antidiquark basis. We use several methods to estimate the mass spectrum and discuss possible assignment for the X states observed in the J/ψφ channel. We find that assigning the Belle X(4350) as a 0 ++ tetraquark is consistent with the tetraquark interpretation for the X(4140) and X(4270) while the interpretation of the X(4500) and X(4700) needs orbital or radial excitation. There probably exist several tetraquarks around 4.3 GeV that decay into J/ψφ or ηcφ.

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Section: +219mentioning

confidence: 99%

X(4140) , X(4270) , X<

et al. 2016

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“…In Ref. [2], Chen et al study the newly observed X(4500) and X(4700) based on the diquarkantidiquark configuration within the framework of QCD sum rules, and interpret them as the D-wave cscs tetraquark states with J P = 0 + . In Ref.…”

Section: Introductionmentioning

confidence: 99%

Reanalysis of the X(3915) , X(4500) and X(4700) with QCD sum rules

Wang

2017

Eur. Phys. J. A

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In this article, we study the Cγ5 ⊗ γ5C type and C ⊗ C type scalar cscs tetraquark states with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension 10 in a consistent way. The ground state masses MCγ 5 ⊗γ 5 C = 3.89 ± 0.05 GeV and MC⊗C = 5.48 ± 0.10 GeV support assigning the X(3915) to be the ground state Cγ5 ⊗ γ5C type tetraquark state with J P C = 0 ++ , but do not support assigning the X(4700) to be the ground state C ⊗ C type cscs tetraquark state with J P C = 0 ++ . Then we tentatively assign the X(3915) and X(4500) to be the 1S and 2S Cγ5 ⊗ γ5C type scalar cscs tetraquark states respectively, and obtain the 1S mass M1S = 3.85 +0.18 −0.17 GeV and 2S mass M2S = 4.35 +0.10 −0.11 GeV from the QCD sum rules, which support assigning the X(3915) to be the 1S Cγ5 ⊗ γ5C type tetraquark state, but do not support assigning the X(4500) to be the 2S Cγ5 ⊗ γ5C type tetraquark state.

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“…It seems to be equally promising for gas sensing applications especially for reducing gases because the change in electrical resistance under different conditions. TiO 2 nanostructures have been synthesized by various techniques, including electron-beam evaporation [5], chemical coprecipitation [6], metal-organic decomposition (MOD) [7], plasma enhanced chemical vapor deposition (PECVD) [8] and solution-based methods [9]. Among these, sol-gel is one of the most successful methods, its simplicity and speed, the possibility of coating the both sides and forming multilayer and mixed layers under different preparation conditions, which allows controlling parameters of the nanostructures [10].…”

Section: Introductionmentioning

confidence: 99%