Excited $K$ meson, $K_c(4180)$, with hidden charm as a $D\bar{D}K$ bound state

Wu, Tian-Wei; Liu, Ming-Zhu; Geng, Li-Sheng

doi:10.48550/arxiv.2012.01134

Cited by 4 publications

(13 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For studies of three-body hadronic molecular states involving the D * s0 (2317) as a DK subsystem, we refer to Refs. [60][61][62][63].…”

Section: A Heavy Mesonsmentioning

confidence: 99%

A survey of heavy-antiheavy hadronic molecules

Dong,

Guo,

Zou

2021

Preprint

View full text Add to dashboard Cite

Many efforts have been made to reveal the nature of the overabundant resonant structures observed by the worldwide experiments in the last two decades. Hadronic molecules attract special attention because many of these seemingly unconventional resonances are located close to the threshold of a pair of hadrons. To give an overall feature of the spectrum of hadronic molecules composed of a pair of heavy-antiheavy hadrons, namely, which pairs are possible to form molecular states, we take charmed hadrons for example to investigate the interaction between them and search for poles by solving the Bethe-Salpeter equation. We consider all possible combinations of hadron pairs of the S-wave singly-charmed mesons and baryons as well as the narrow P -wave charmed mesons. The interactions, which are assumed to be meson-exchange saturated, are described by constant contact terms which are resummed to generate poles. It turns out that if a system is attractive near threshold by the light meson exchange, there is a pole close to threshold corresponding to a bound state or a virtual state, depending on the strength of interaction and the cutoff. In total, 229 molecular states are predicted. The observed near-threshold structures with hidden-charm, like the famous X(3872) and Pc states, fit into the spectrum we obtain. We also highlight a Λc Λc bound state that has a pole consistent with the cross section of the e + e − → Λc Λc precisely measured by the BESIII Collaboration.

show abstract

“…For studies of three-body hadronic molecular states involving the D * s0 (2317) as a DK subsystem, we refer to Refs. [60][61][62][63].…”

Section: A Heavy Mesonsmentioning

confidence: 99%

A survey of heavy-antiheavy hadronic molecules

Dong,

Guo,

Zou

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…with f π 130 MeV and C W T (0) = 2, C W T (1) = 0 for the isoscalar and isovector channels, respectively. Following the same logic in treating the Σ c D interaction, the isoscalar contact-range DK interaction can be Fourier transferred into coordinate space and represented by a Gaussian shape potential that was already adopted in our previous works [57,70]…”

Section: Two-body Interactionsmentioning

confidence: 99%

“…To remove the ultraviolet divergence of the loop diagrams, we choose a Gaussian form factor exp(−p 2 E /Λ 2 ), where P E is the Euclidean Jacobi momentum and Λ characterizes the distribution of the molecular components inside the molecule. The cutoff value is often chosen to be Λ =1 GeV [57,71,86]. With this value the coupling between P * cs and its component Ds0 (2317) and Σ c is found to be g P * cs Ds0 (2317)Σc = 3.65.…”

Section: Prediction Of a Hidden Charm Pentaquark State With Strangene...mentioning

confidence: 99%

“…It should be mentioned that hadronic few-body systems have been extensively studied by different methods in the charm sector, such as the hidden charmed D DK [57] and D D * K [57-59], the BB K system [60], the πD D [61], ρD D [62], BD D [63] and Ξ cc Ξcc K [64], the singly charmed DN N [65], DK K [66,67], and N DK(N D K) [68], the doubly charmed DDK [69][70][71][72], BDD [63] and DD * K [58] systems, the triply charmed four-body DDDK [70], and the quadruply charmed Ξ cc Ξ cc K [64] systems. For recent reviews, see Refs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hidden charm pentaquark with strangeness $P_{cs}^*(4739)$ as a $Σ_{c}\bar{D}\bar{K}$ bound state

Wu,

Pan,

Liu

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Motivated by the recent discovery of the first hidden charm pentaquark state with strangeness P cs (4459) by the LHCb Collaboration, we study the likely existence of a threebody Σ c D K bound state, which shares the same minimal quark content as P cs (4459). The Σ c D and DK interactions are determined by reproducing P c (4312) and D * s0 (2317) as Σ c D and D K molecules, respectively, while the Σ c K interaction is constrained by chiral effective theory. We indeed find a three-body bound state by solving the Schrödinger equation using the Gaussian Expansion Method, which can be viewed as an excited hidden charm pentaquark state with strangeness, P * cs (4739), with I(J P ) = 1(1/2 + ) and a binding energy of 77.8 +25 −10.3 MeV. We further study its strong decays via triangle diagrams and show that its partial decay widths into DΞ c and D * s Σ c are of a few ten's MeV, with the former being dominant.

show abstract

“…In Ref. [19], the mass of the D D * K state have been investigated by solving the Schrödinger equation with quantum numbers I(J P ) = 1/2(1 − ).…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic properties of the $$ D \bar{D}^* K$$ molecular hexaquark state

Özdem

2022

Eur. Phys. J. Plus

View full text Add to dashboard Cite

We systematically study the electromagnetic properties of multiquark states. In this study, inspired by the recent series of studies that showed the likely existence of a D D * K state, we examine the magnetic moment of D D * K hexaquark state in three-meson molecular structure, as well as having isospin and spin-parity quantum numbers I(J P ) = 3/2(1 − ) via light-cone sum rules. The magnetic moment obtained for the D D * K molecular hexaquark state is quite large due to the double electric charge, and its magnitude indicates that it is accessible in future experiments. As a by product, the quadrupole moment of the D D * K molecular hexaquark state are also extracted. This value indicates a non-spherical charge distribution. The magnetic moments of hadrons contains valuable knowledge on the distributions of charge and magnetization their inside, which can be used to better understand their geometric shape and quark-gluon organizations. The results given in this study constitute an estimate of the magnetic moment of this D D * K state and should serve as an inspiration to conduct experimental examinations of this state.

show abstract

Excited $K$ meson, $K_c(4180)$, with hidden charm as a $D\bar{D}K$ bound state

Cited by 4 publications

References 46 publications

A survey of heavy-antiheavy hadronic molecules

A survey of heavy-antiheavy hadronic molecules

Hidden charm pentaquark with strangeness $P_{cs}^*(4739)$ as a $Σ_{c}\bar{D}\bar{K}$ bound state

Electromagnetic properties of the $$ D \bar{D}^* K$$ molecular hexaquark state

Contact Info

Product

Resources

About