Photoproduction of 
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 and 
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Xing, Hanyang; An, Chun-Sheng; Xie, Ju-Jun; Li, Gang

doi:10.1103/physrevd.98.094007

Cited by 6 publications

(5 citation statements)

References 47 publications

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“…Of course, our statement here needs further verification through other reaction mechanisms. One indirect way is to look into the photoproduction of double K 0 S [70] through the scalar resonances f 0 ð980Þ and f 0 ð1500Þ where f 0 ργ or f 0 ωγ vertices participate in the t-channel [71]. Through the vector-meson dominance, these vertices can be related to f 0 ρρ or f 0 ωρ which can be constrained by our tetraquark mixing framework.…”

Section: Total Strengths Of the Fall-apart Modesmentioning

confidence: 99%

Further signatures to support the tetraquark mixing framework for the two light-meson nonets

Kim

Cheoun

et al. 2019

Phys. Rev. D

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In this work, we investigate additional signatures to support the tetraquark mixing framework that has been recently proposed as a possible structure for the two nonets, namely a 0 ð980Þ, K Ã 0 ð800Þ, f 0 ð500Þ, and f 0 ð980Þ in the light nonet and a 0 ð1450Þ, K Ã 0 ð1430Þ, f 0 ð1370Þ, and f 0 ð1500Þ in the heavy nonet. First, we advocate that the two nonets form the flavor nonet approximately satisfying the Gell-Mann-Okubo mass relation. Then we reexamine the mass ordering generated from the tetraquark nonets and show that this mass ordering is satisfied by the two nonets although the ordering in the heavy nonet is marginal. The marginal mass ordering however can be regarded as another signature for tetraquarks because it can be explained partially by the hyperfine masses calculated from the tetraquark mixing framework. The tetraquark mixing parameters are found to be independent of isospins giving additional support for the formation of the flavor nonets. In addition, we discuss the other approaches like two-quark pictures or meson-meson bound states, and their possible limitations in explaining the two nonets. As a peculiar signature distinguished from other approaches, we investigate the fall-apart coupling strengths into two vector mesons from our tetraquarks. Coupling strengths into the two-vector modes are found to enhance strongly in the heavy nonet while they are suppressed in the light nonet. The coupling ratios, which depend on the isospin channel, are found to be huge around ∼15. This trend in the two-vector modes, which is opposite to that in the two-pseudoscalar fall-apart modes, can provide another testing ground for the tetraquark mixing framework. Some experimental evidence related to the phenomena is discussed particularly from the resonances belonging to the heavy nonet.

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Section: Total Strengths Of the Fall-apart Modesmentioning

confidence: 99%

Further signatures to support the tetraquark mixing framework for the two light-meson nonets

Kim

Cheoun

et al. 2019

Phys. Rev. D

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“…(k on , q on ; E cm ), (29) where k on and q on are the 3-momenta of πN and γN corresponding to the total energy E cm in the center-of-mass frame, respectively. More information of electromagnetic multipoles for meson photoproduction off nucleon can refer to Refs.…”

Section: Pion Photoproduction Off Nucleon With Fsimentioning

confidence: 99%

“…In another aspect, photoproduction of meson is also an excellent tool to extract information about the mechanism of the strong interaction at low energies [7,9,[29][30][31][32][33][34][35][36][37][38]. It is helpful to determine the basic properties of nucleon resonances, such as the spin, pole positions, beam asymmetries, anomalous magnetic moments, and electromagnetic couplings [10,[39][40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory

Guo,

Liu

2022

Preprint

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We analyze the γN → πN process in the negative parity channel with Hamiltonian effective filed theory which is successful in studying the nucleon resonances associated with the meson-nucleon scattering and lattice QCD simulations. We provide the scattering amplitude of pion photoproduction and extract the electric dipole amplitudes E 0+ . The triquark component in N * (1535) is important for improving the consistence between our results and the experimental data.

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“…Meson photoproduction off a baryon provides one of the most direct routes to extract information regarding the hadronic structure [30,31]. We should point out that in the experiment, no signal representing a 1 (1260) + n photoproduction [32][33][34][35][36] could be isolated even though the πγ radiative width of a 1 (1260) very likely exceeds that of the a 2 (1320) [21,[37][38][39].…”

Section: −25mentioning

confidence: 99%

Study of $a_1(1260)$ in the $γp \to π^+π^+π^- n$ reaction

Zhang,

Xie

2018

Preprint

Self Cite

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We investigate the discovery potential of the a1(1260) photoproduction in the γp → a1(1260) + n and γp → π + π + π − n reactions via the π-exchange mechanism. For the γp → π + π + π − n reaction, we perform a calculation for the differential and total cross sections by including the contributions from the a1(1260) intermediate resonance decaying into ρπ then into π + π + π − . Besides, the nonresonance process is also considered. With a lower mass of a1(1260), we get a fairly good description of the experimental data for the invariant π + π + π − mass distributions. For the γp → a1(1260) + n reaction, with our model parameters, the total cross section is of the order of 10 µb at photon beam energy Eγ ∼ 2.5 GeV. It is expected that our model calculations could be tested by future experiments.

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Photoproduction of f0(980) and f0(1500

Cited by 6 publications

References 47 publications

Further signatures to support the tetraquark mixing framework for the two light-meson nonets

Further signatures to support the tetraquark mixing framework for the two light-meson nonets

Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory

Study of $a_1(1260)$ in the $γp \to π^+π^+π^- n$ reaction

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