Hidden-charm pentaquark states through current algebra: from their production to decay *

Chen, Hua-Xing

doi:10.1088/1674-1137/ac6ed2

Cited by 18 publications

(3 citation statements)

References 120 publications

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“…The interpretation of the P cs (4459) as a D * Ξ c molecular state was supported by [697] through the QCD sum rule method. More QCD sum rule studies on the hidden-charm pentaquark states can be found in [698][699][700][701][702][703].…”

Section: Hidden-charm Pentaquark State Pcs(4459)mentioning

confidence: 99%

An updated review of the new hadron states

et al. 2022

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The past decades witnessed the golden era of hadron physics. Many excited open heavy flavor mesons and baryons have been observed since 2017. We shall provide an updated review of the recent experimental and theoretical progresses in this active field. Besides the conventional heavy hadrons, we shall also review the recently observed open heavy flavor tetraquark states X(2900) and Tcc(3875) as well as the hidden heavy flavor multiquark states X(6900), Pcs(4459), Zcs(3985), Zcs(4000), and Zcs(4220). We will also cover the recent progresses on the glueballs and light hybrid mesons, which are the direct manifestations of the non-Abelian SU(3) gauge interaction of the Quantum Chromodynamics in the low-energy region.

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Section: Hidden-charm Pentaquark State Pcs(4459)mentioning

confidence: 99%

An updated review of the new hadron states

et al. 2022

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“…During these theoretical works, the P c (4312) is widely accepted as an S-wave Σ c D molecule state with J P = 1 , respectively [270][271][272][273][274]. Moreover, the decay properties [269,[275][276][277][278][279][280][281][282][283] and production [280,[284][285][286][287][288][289][290][291][292][293] of these pentaquarks were also investigated extensively. More details about the hidden-charm pentaquarks can be found in the review articles [15,294].…”

Section: Hidden-charm Pentaquarksmentioning

confidence: 99%

Tetraquarks and Pentaquarks from Quark Model Perspective

et al. 2023

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According to the classification of the quark model, the hadrons going beyond three-quark baryon and quark-antiquark meson pictures are called exotic hadrons. Many new hadrons have been observed since 2003, some of which exhibit exotic behaviors. There are a lot of excellent review articles on exotic hadrons available so far; the present article tries to focus on the recent experimental and theoretical progress on the exotic states from the perspective of the quark model. Although lattice quantum chromodynamics may give the final answer of the problem, the phenomenological models are still powerful tools to explore the exotic states and to provide insight on the phenomenology of hadrons. The spatial and color structures of multiquark states and the channel coupling calculation are emphasized through reviewing some bound states, molecular and color structure resonances. Finally, the unquench effects of some exotic states are reviewed. With the accumulation of experimental data on multiquark states and inspiration of underlying theory developments, more reasonable phenomenological models incorporating multi-body interactions and high Fock components to unify the description of normal hadrons and exotic hadrons are expectable.

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“…We systematically study it using the method of QCD sum rules, and calculate the mass correction ΔM induced by this term. Note that the obtained results can be further applied to study the production and decay properties of these hadronic molecular states [68][69][70]. The parameter ΔM is actually not the binding energy, because we are using local currents in QCD sum rule analyses.…”

Section: Molecules With Strangenessmentioning

confidence: 99%

Covalent hadronic molecules induced by shared light quarks

Chen

2022

Commun. Theor. Phys.

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After examining Feynman diagrams corresponding to the Dbar(*)Σc(*), Dbar(*)Λc, D(*)Kbar*, and D(*)Dbar(*) hadronic molecular states, we propose a possible binding mechanism induced by shared light quarks. This mechanism is similar to the covalent bond in chemical molecules induced by shared electrons. We use the method of QCD sum rules to calculate its corresponding light-quark-exchange diagrams, and the obtained results indicate a model-independent hypothesis: the light-quark-exchange interaction is attractive when the shared light quarks are totally antisymmetric so that obey the Pauli principle. We build a toy model with four parameters to formulize this picture, and estimate binding energies of some possibly-existing covalent hadronic molecules. A unique feature of this picture is that binding energies of the (I)J(P)=(0)1(+) DBbar*/D*Bbar hadronic molecules are much larger than those of the (I)J(P)=(0)1(+) DD*/BB* ones, while the (I)J(P)=(1/2)1/2(+) DbarΣc/DbarΣb/BΣc/BΣb hadronic molecules have similar binding energies.

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Hidden-charm pentaquark states through current algebra: from their production to decay *

Cited by 18 publications

References 120 publications

An updated review of the new hadron states

An updated review of the new hadron states

Tetraquarks and Pentaquarks from Quark Model Perspective

Covalent hadronic molecules induced by shared light quarks

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