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

Wang, Zhi-Gang

doi:10.1140/epja/i2017-12208-7

Cited by 28 publications

(12 citation statements)

References 35 publications

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“…The measured widths of X(4500) and X(4700) are 92 ± 21 +21 −20 MeV and 120 ± 31 +42 −33 MeV, respectively. To understand the nature of these two structures, different interpretations have been proposed in the literature [103,[107][108][109][110]. In this work we consider the possible assignments of these two states as conventional charmonium states.…”

Section: X(4500/4700)mentioning

confidence: 99%

Strong decays of higher charmonium states into open-charm meson pairs

Gui

Lü

et al. 2018

Phys. Rev. D

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The open-charm strong decays of higher charmonium states up to the mass of the 6P multiplet are systematically studied in the 3 P 0 model. The wave functions of the initial charmonium states are calculated in the linear potential (LP) and screened potential (SP) quark model. The decay widths for most of the well-established charmonium states above the open-charm thresholds can be reasonably described. By comparing our quark model calculations with the experimental observations we also discuss the nature of some of the newly observed charmonium-like states. It is found that (i) the ψ(4415) may favor the ψ(4S ) or ψ 1 (3D) assignment. There may exist two highly overlapping vector charmonium states around 4.4 GeV; (ii) In the LP model the J PC = 1 −− Y(4660) resonance and the J PC = 0 ++ X(4500) resonance may be assigned as the ψ(5S ) and χ c0 (4P), respectively; (iii) The newly observed state X * (3860) can be assigned as the χ c0 (2P) state with a narrow width of about 30 MeV; (iv) It seems to be difficult to accommodate the X(4140) and X(4274) states in the same potential model as excited χ c1 states. (v) The X(3940) resonance can be assigned as the η c (3S ) state; (vi) The vector charmonium-like states Y(4230/4260, 4360) and scalar X(4700) cannot be described by any conventional charmonium states self-consistently in our model. PACS numbers:

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Section: X(4500/4700)mentioning

confidence: 99%

Strong decays of higher charmonium states into open-charm meson pairs

Gui

Lü

et al. 2018

Phys. Rev. D

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“…34 We also fabricated high-performance elastomer fibers from PEBA elastomers by melting spinning. 35,36 However, there are no published reports about the correlation between microscopic structural parameters and macroscopic deformation behaviors, especially during step-cycle loading-unloading deformation. Generally, both plastic and elastic deformations occur after PEBA is stretched, and the deformations can be separated from the total strain into elastic part and plastic part through this method.…”

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confidence: 99%

Microstructural evolution underlying the ternary stages of the elastic behaviors for poly(ether‐b‐amide) copolymer elastomers

Zhu

Dong

Huang

et al. 2018

J Polym Sci B Polym Phys

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Three stages of elastic behavior were observed during cyclic deformations for poly(ether‐b‐amide) (PEBA) segmented copolymers based on crystalline hard segments of polyamide 12 (PA12) and amorphous soft segments of poly(tetramethylene oxide) (PTMO). The underlying microstructural evolution was characterized by a combination of in situ Fourier transform infrared spectroscopy (FTIR), wide‐angle X‐ray diffraction (WAXD), and small‐angle X‐ray scattering (SAXS) technologies. The γ–α″ phase transition of crystalline PA12 occurred upon stretching, and the orientation of the α″ phase was less reversible under larger strains. PTMO chain orientation cannot be restored to the initial state, contributing to plastic deformation. Driven by the entropy effect, the strain‐induced crystallization of PTMO can fuse during sample retarding, exerting little influence on the residual strain. For PEBA with a shore D hardness of 35 D, the long period (L) can be restored to the initial L after the sample was unloaded until system fibrillation. The tie molecules between adjacent oriented lamellae can be by drawn out high stress in a PEBA material with a shore D hardness of 40 D, and the relaxation led to a second long period. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 855–864

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“…It seeks to reduce the chance of reidentification to below a given predetermined statistical threshold. This threshold is crucial to whether anonymization provides real protection; for example, with differential privacy, the epsilon value selected by Apple has been severely criticized for providing little protection of privacy [44]. Finally, functional anonymization examines the risk of anonymization within a particular context, taking into account motivations of an attacker, consequences of disclosure, and data divergence among other criteria.…”

Section: Methodsmentioning

confidence: 99%

Contextual Anonymization for Secondary Use of Big Data in Biomedical Research: Proposal for an Anonymization Matrix

Rumbold¹,

Pierscionek²

2018

JMIR Med Inform

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BackgroundThe current law on anonymization sets the same standard across all situations, which poses a problem for biomedical research.ObjectiveWe propose a matrix for setting different standards, which is responsive to context and public expectations.MethodsThe law and ethics applicable to anonymization were reviewed in a scoping study. Social science on public attitudes and research on technical methods of anonymization were applied to formulate a matrix.ResultsThe matrix adjusts anonymization standards according to the sensitivity of the data and the safety of the place, people, and projects involved.ConclusionsThe matrix offers a tool with context-specific standards for anonymization in data research.

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

Cited by 28 publications

References 35 publications

Strong decays of higher charmonium states into open-charm meson pairs

Strong decays of higher charmonium states into open-charm meson pairs

Microstructural evolution underlying the ternary stages of the elastic behaviors for poly(ether‐b‐amide) copolymer elastomers

Contextual Anonymization for Secondary Use of Big Data in Biomedical Research: Proposal for an Anonymization Matrix

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