The weak decay $$B_c$$ to Z(3930) and X(4160) by Bethe–Salpeter method

Wang, Zhi‐Hui; Zhang, Yi; Wang, Tianhong; Jiang, Yue; Wang, Guoli

doi:10.1140/epjc/s10052-020-8372-1

Cited by 45 publications

(70 citation statements)

References 58 publications

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“…Curve (a) depicts characteristics peaks of CPX at 2θ = 19.04°, 26.6°, and 29.4° showing regular crystal structure of the drug 15 . For PVA nanofibers mat, curve (b) shows the significant wide peak at 2θ = 19.4° showing the pure crystalline nature of PVA 23 . Pure PMMA nanofibers mat has a board amorphous hump at 2θ = 15°, and a smaller hump observed at 2θ = 42.2° as seen in curve (d) 24 .…”

Section: Resultsmentioning

confidence: 86%

PVA/PMMA polymer blended composite electrospun nanofibers mat and their potential use as an anti‐biofilm product

Singh

Chauhan

Das

et al. 2020

J of Applied Polymer Sci

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Bacterial infections have increased dramatically due to microbial biofilm formation resulting in chronic pathological conditions in human subjects. Microbial biofilm causes poor drug penetration and antibiotic resistance, which has made site‐specific sustained drug delivery the most appropriate option. Our work entails fabrication of ciprofloxacin hydrochloride (CPX) loaded nanofibers using polyvinyl alcohol (PVA) and poly(meth) methacrylate (PMMA) employing electrospinning method to form PVA:PMMA:CPX nanofibers mat. These nanofibers mat were optimized, characterized, and further subjected to anti‐biofilm activity. Microscopic images revealed average nanofibers diameter of 243 ± 80 nm with smooth surface morphology. Analytical graphs and thermal analysis confirmed drug encapsulation and drug‐polymer compatibility. In vitro studies demonstrated sustained release of CPX for 22 days displaying Hixon Crowell and two‐stage desorption kinetics. Anti‐biofilm activity showed zones of inhibition 3.0 ± 0.5 cm, 2.8 ± 0.1 cm, 2.9 ± 0.2 cm for Escherichia coli, Staphylococcus aureus, Enterococcus faecalis, respectively which was well above the minimum inhibitory concentration levels of the bacteria forming biofilm. Conclusively, these nanofibers mat have potential to be used as an anti‐biofilm product.

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Section: Resultsmentioning

confidence: 86%

PVA/PMMA polymer blended composite electrospun nanofibers mat and their potential use as an anti‐biofilm product

Singh

Chauhan

Das

et al. 2020

J of Applied Polymer Sci

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“…The quark propagator in vacuum is given in terms of the parameters of the quarks and gluons [35,36]. At a nonzero temperature, the failure of the Lorentz invariance by the chosen reference frame and emergence of the extra O(3)-symmetry some new kinds of operators appear in the OPE.…”

Section: Thermal Sum Rules For Physical Quantitiesmentioning

confidence: 99%

Light scalar K0*(700) meson in vacuum and a hot medium

2019

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The K * 0 (700) meson appears as the lightest strange scalar meson in PDG. Although there were a lot of experimental and theoretical efforts to establish this particle and determine its properties and nature, it still needs confirmation in an experiment and its internal quark-gluon organization needs to be clarified. In this connection, we study some spectroscopic properties of this state in a hot medium as well as a vacuum by modeling it as a usual meson of a quark and an aniquark. In particular, we investigate its mass and coupling or decay constant in terms of the temperature of a hot medium by including the medium effects by the fermionic and gluonic parts of the energy momentum tensor as well as the temperature-dependent continuum threshold, quark, gluon and mixed condensates. We observe that the mass of K * 0 (700) remains unchanged up to T ≃ 0.6 Tc with Tc being the critical temperature, but it starts to diminish after this point and approaches zero near to the critical temperature referring to the melting of the meson. The coupling of K * 0 (700) is also sensitive to T at higher temperatures. It starts to grow rapidly after T ≃ 0.85 Tc. We turn off the medium effects and calculate the mass and coupling of the K * 0 (700) state at zero temperature. The obtained mass is in accord with the average Breit-Wigner mass value reported by PDG. I. MOTIVATIONThe light scalar mesons with a mass below 1 GeV are among particles that are not experimentally well established and their nature needs to be clarified. Their mass and width suffer from large uncertainties. Hence, their investigation constitutes one of the directions of research in high energy physics. There are a lot of models and approaches aiming to clarify their nature and internal quark-gluon organization. The standard quark model for the mesons handling them as bound states of quarks and antiquarks fails to correctly describe the mass hierarchy and the existing large uncertainties on the parameters of these particles. As a result, some of these particles like the light unflavored f 0 (500) state have already been treated as the unconventional exotic states of compact tetraquarks or two-meson molecules [1,2].The lightest scalar strange meson K * 0 (700) appears in PDG with the quantum numbers I(J P ) = 1/2(0 + ) and the qualifier "needs confirmation". The reported average T-matrix pole as well as Breit-Wigner mass and width for this state are [3]:T-matrix pole √ s = (630 − 730) − i(260 − 340) M eV, Breit-Wigner mass = 824 ± 30 M eV, Breit-Wigner width = 478 ± 50 M eV.(1)

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“…To develop transparent ceramics, it is necessary to eliminate all possible light scattering sources including residual pores within the grains and at the grain boundaries, grain boundaries, second phases (impurities) at the grain boundaries and birefringence from noncubic materials. Thus, special shaping and sintering technologies, such as cold isostatic pressure (CIP), [ 4 ] gel casting, [ 5 ] hot pressure (HP) sintering, [ 6 ] hot isostatic pressure (HIP) sintering, [ 7 ] vacuum sintering, [ 8 ] and spark plasma sintering (SPS) [ 9 ] have to be used to achieve a high density (>99.9% of theoretical density). However, with the potential demands of high precision and complex‐shaped transparent ceramic parts for industry and scientific research, the aforementioned techniques could not well‐meet such requirements, because the high cost machining are requisite.…”

Section: Introductionmentioning

confidence: 99%

High‐Quality Translucent Alumina Ceramic Through Digital Light Processing Stereolithography Method

Sun

Li²,

Jiang³

et al. 2021

Adv Eng Mater

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Herein, translucent alumina ceramics with fine complex geometric shapes are successfully fabricated by a digital light processing (DLP) process followed by vacuum sintering. The interlayer bonding condition is the key for preparing highquality translucent alumina for this layer-by-layer additive manufacturing (AM) method. The curing characteristics of alumina suspensions are carefully investigated by curing depth and polymerization conversion behavior. It is clear that the residual stress resulted from the polymerization process is more critical than the curing depth for selecting optimum curing time. Finally, high-quality translucent alumina ceramic and complex structures are realized using this novel AM technique. It reveals that DLP 3D printing method can be a promising technology for the fabrication of transparent ceramics.

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The weak decay $$B_c$$ to Z(3930) and X(4160) by Bethe–Salpeter method

Cited by 45 publications

References 58 publications

PVA/PMMA polymer blended composite electrospun nanofibers mat and their potential use as an anti‐biofilm product

PVA/PMMA polymer blended composite electrospun nanofibers mat and their potential use as an anti‐biofilm product

Light scalar K0*(700) meson in vacuum and a hot medium

High‐Quality Translucent Alumina Ceramic Through Digital Light Processing Stereolithography Method

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