<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:math>interactions revisited and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:m

Xiao, C. W.

doi:10.1103/physrevd.95.014006

Cited by 15 publications

(9 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Baru et al, 2004), where the spectral density was employed to supplement the parameter λ 2 introduced above for bound states. The subject was later elaborated in various papers Guo and Oller, 2016a;Hyodo, 2013a,b;Kang et al, 2016;Sekihara, 2017;Sekihara et al, 2015;Xiao andZhou, 2016a,b, 2017); however, what is common to all of them is that a quantitative, probabilistic extraction of the level of compositeness is not possible rigorously as soon as one moves to resonances. The reason is that states that belong to poles on the second sheet are not normalizable and as such one looses the condition of Eq.…”

Section: Generalizations To Resonancesmentioning

confidence: 99%

Hadronic molecules

et al. 2018

View full text Add to dashboard Cite

A large number of experimental discoveries especially in the heavy quarkonium sector that did not at all fit to the expectations of the until then very successful quark model led to a renaissance of hadron spectroscopy. Among various explanations of the internal structure of these excitations, hadronic molecules, being analogues of light nuclei, play a unique role since for those predictions can be made with controlled uncertainty. We review experimental evidences of various candidates of hadronic molecules, and methods of identifying such structures. Nonrelativistic effective field theories are the suitable framework for studying hadronic molecules, and are discussed in both the continuum and finite volumes. Also pertinent lattice QCD results are presented. Further, we discuss the production mechanisms and decays of hadronic molecules, and comment on the reliability of certain assertions often made in the literature.

show abstract

Section: Generalizations To Resonancesmentioning

confidence: 99%

Hadronic molecules

et al. 2018

View full text Add to dashboard Cite

show abstract

“…(29), we have introduced an extra momentum factor for the kaon in the P-wave as done in Refs. [105,106], and absorbed the term for the tree level contribution from the direct decay diagram [102] of Fig. 3(a) into the background below.…”

Section: Results With J=ψp Produced Directlymentioning

confidence: 99%

How to reveal the nature of three or more pentaquark states

Xiao

et al. 2020

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

Within the chiral unitary approach and with the constraints of heavy quark spin symmetry, we study the coupled channel interactions ofD ðÃÞ Σ ðÃÞ c channels, close to whose thresholds three pentaquarklike P c states have been reported by the LHCb Collaboration. In the present work, we take into account the contributions of pion exchanges via box diagrams to the interaction potentials, and therefore lift the degeneracy in the masses ofD Ã Σ ðÃÞ c spin multiplets. Fitting the J=ψp invariant mass distributions in the Λ 0 b → J=ψK − p decay, we find that the LHCb pentaquark states cannot be reproduced in the direct J=ψp production in the Λ 0 b decay, and can only be indirectly produced in the final state interactions of the Λ 0 b decay products,D ðÃÞ Σ ðÃÞ c , which further supports the nature of these states asD ðÃÞ Σ c molecules. Based on the fit results obtained, we study the partial decay widths/branching ratios to the other decay channels,D Ã Λ c ,DΛ c , and η c N, and the corresponding invariant mass distributions. The resonances with J P ¼ 1 2 − , P c ð4312Þ, P c ð4440Þ and the one ofD Ã Σ Ã c around 4500 MeV, have large partial decay width into η c N, and thus can be easily seen in the η c N invariant mass distributions. By contrast, the states with J P ¼ 3 2 − , P c ð4457Þ, the (predicted) narrow P c ð4380Þ, and the bound state ofD Ã Σ Ã c with a mass of about 4520 MeV do not decay into η c N. Therefore, the η c N channel should be studied in the future to provide further insights into the nature of these states, especially that of P c ð4440Þ and P c ð4457Þ.

show abstract

“…ROS may be responsible for the decrease in Bcl-xL mRNA levels that precede the loss of ψ m , the release of cytochrome c, and the activation of caspase-3, augmenting cell death [35][36][37]. There are several cellular redox systems such as glutathione, thioredoxin, peroxyredoxins (Prx), pyridine nucleotides (NADH/NADPH) ,and some polysaccharides maintain an optimal intracellular redox environment for free radical scavenging and inhibition of apoptosis [38].…”

Section: Comparison Of Fluorescence Spectra Of Zno-cys (Scaled At Thementioning

confidence: 99%

Antiproliferative effects of ZnO, ZnO‐MTCP, and ZnO‐CuMTCP nanoparticles with safe intensity UV and X‐ray irradiation

Sadjadpour

Safarian

Zargar

2015

Biotech and App Biochem

View full text Add to dashboard Cite

In photodynamic therapy (PDT) of cancer both the light and the photosensitizing agent are normally harmless, but in combination they could result in selective tumor killing. Zinc oxide nanoparticles were synthesized and coated with the amino acid cysteine to provide an adequate arm for conjugation with porphyrin photosensitizers (meso-tetra (4-carboxyphenyl) porphyrin [MTCP] and CuMTCP). Porphyrin-conjugated nanoparticles were characterized by TEM, FTIR, and UV–vis, and fluorescence spectrophotometry. The 3-[4, 5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) assay was used to measure cell viability in the presence or absence of porphyrin conjugates following UV and X-ray irradiation. The uptake of the porphyrin-conjugated ZnO nanoparticles by cells was detected using fluorescence microscopy. Our results indicated that the survival of T-47D cells was significantly compromised in the presence of ZnO-MTCP-conjugated nanostructures with UV light exposure. Exhibition of cytotoxic activity of ZnO-MTCP for human prostate cancer (Du145) cells occurred at a higher concentration, indicating the more resistant nature of these tumor cells. ZnO-CuMTCP showed milder cytotoxic effects in human breast cancer (T-47D) and no cytotoxic effects in Du145 with UV light exposure, consistent with its lower cytotoxic potency as well as cellular uptake. Surprisingly, none of the ZnO-porphyrin conjugates exhibited cytotoxic effects with X-ray irradiation, whereas ZnO alone exerted cytotoxicity. Thus, ZnO and ZnO-porphyrin nanoparticles with UV or X-ray irradiation may provide a suitable treatment option for various cancers.

show abstract

J/ψNinteractions revisited andΛb0→

Cited by 15 publications

References 80 publications

Hadronic molecules

Hadronic molecules

How to reveal the nature of three or more pentaquark states

Antiproliferative effects of ZnO, ZnO‐MTCP, and ZnO‐CuMTCP nanoparticles with safe intensity UV and X‐ray irradiation

Contact Info

Product

Resources

About