$Σ_cΣ_c$ interactions in chiral effective field theory

Chen, Kan; Huang, Bolin; Wang, Bo; Zhu, Shi-Lin

doi:10.48550/arxiv.2204.13316

Cited by 3 publications

(3 citation statements)

References 102 publications

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“…Firstly, we focus on the detailed potential V BC→BC for the Swave D * N interaction, and we employ the chiral effective field theory, which is a powerful instrument to study the hadronhadron interaction [45,[87][88][89][90][91][92][93][94][95]. In the heavy flavor hadron systems, the application of the chiral effective field theory has led to some achievements for predicting the bound states of B( * ) B( * ) , DD * , D D * , Σ c D( * ) , and so on [45,[96][97][98][99][100][101][102][103][104][105]. With the experience in these works, the D * N interaction can also be studied within the chiral effective field theory.…”

Section: A D * N Interactionmentioning

confidence: 99%

$Λ_c(2910)$ and $Λ_c(2940)$ as the conventional baryons dressed with the $D^*N$ channel

Zi-Le¹,

Liu²,

Luo³

et al. 2022

Preprint

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In this work, we treat Λ c (2910) + and Λ c (2940) + as the conventional udc cores dressed with the D * N channel. We provide a possible interpretation to both Λ c (2910) + and Λ c (2940) + within the same framework. In the study, we consider not only the effects between the conventional triquark core and the D * N channel but also the D * N-D * N interactions. The mass of Λ c state with J P = 1/2 − is larger than that with J P = 3/2 − in this unquenched picture, which is very different from the prediction of the conventional quenched quark model. Based on the mass spectrum, the spin-parity of Λ c (2940) + is more likely to be 1/2 − while Λ c (2910) + prefers 3/2 − . We look forward to the future experiments can test our results with more precise experimental data.

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Section: A D * N Interactionmentioning

confidence: 99%

$Λ_c(2910)$ and $Λ_c(2940)$ as the conventional baryons dressed with the $D^*N$ channel

Zi-Le¹,

Liu²,

Luo³

et al. 2022

Preprint

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“…Similar to the HBChPT formalism in the light flavor meson-baryon and baryon-baryon interaction, we can use heavy meson chiral perturbation theory (HMChPT) to deal with the charmed mesons [32]. This framework can also be extended to the heavy flavor hadron interactions and the new hadron states [33][34][35][36](for a review of heavy hadron systems in ChPT, see ref. [37]).…”

Section: Introductionmentioning

confidence: 99%

Phase shifts of the light pseudoscalar meson and heavy meson scattering in heavy meson chiral perturbation theory

Huang,

Lin,

Chen

et al. 2022

Preprint

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We calculate the complete T matrices of the elastic light pseudoscalar meson and heavy meson scattering to the third order in heavy meson chiral perturbation theory. We determine the low-energy constants by fitting to the phase shifts and scattering lengths from the lattice QCD simulations simultaneously and predict the phase shifts at the physical meson masses. The phase shifts in the Dπ(I = 1/2), DK(I = 0), D K(I = 0), Ds K, Dη and Dsη S waves are so strong that bound states or resonances may be generated dynamically in all these channels. The DK(I = 0) channel corresponds to the well-known exotic state D * s0 (2317). The coupled-channel Dπ, Dη and Ds K scattering corresponds to the D * 0 (2400). We also predict the scattering lengths and scattering volumes and observe a good convergence in the P waves and scattering volumes. Our calculations provide a possibility to accurately investigate the exotic state in the light pseudoscalar meson and heavy meson interactions.

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“…In the molecule picture, the double-charm dibaryon could be easier to form a bound state due to the larger reduced mass. And in fact, the double-heavy hexaquark (qqqqQQ) systems have been discussed in various approaches [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54], including the chiral constituent quark model [36,37], the quark delocalization color screening model [38,39], the chromomagnetic model [40], the QCD sum rules [41], the chiral effective field theory (EFT) [42,43], and the oneboson-exchange (OBE) model [44][45][46][47][48][49][50]. For the Λ c Σ c molecule system, the authors of Ref.…”

Section: Introductionmentioning

confidence: 99%

Double-charm and hidden-charm hexaquark states under the complex scaling method

Cheng¹,

Zheng²,

Lin³

et al. 2022

Preprint

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We investigate the double-charm and hidden-charm hexaquarks as molecules in the framework of the one-boson-exchange potential model. The multichannel coupling and S − D wave mixing are taken into account carefully. We adopt the complex scaling method to investigate the possible quasibound states, whose widths are from the three-body decay channel ΛcΛcπ or Λc Λcπ. For the double-charm system of I(J P ) = 1(1 + ), we obtain a quasibound state, whose width is 0.50 MeV if the binding energy is -14.27 MeV. And the S-wave ΛcΣc and ΛcΣ * c components give the dominant contributions. For the 1(0 + ) double-charm hexaquark system, we do not find any pole. We find more poles in the hidden-charm hexaquark system. We obtain one pole as a quasibound state in the I G (J P C ) = 1 + (0 −− ) system, which only has one channel (Λc Σc + Σc Λc)/ √ 2. Its width is 1.72 MeV with a binding energy of -5.37 MeV. But, we do not find any pole for the scalar 1 − (0 −+ ) system. For the vector 1 − (1 −+ ) system, we find a quasibound state. Its energies, widths and constituents are very similar to those of the 1(1 + ) double-charm case. In the vector 1 + (1 −− ) system, we get two poles-a quasibound state and a resonance. The quasibound state has a width of 0.6 MeV with a binding energy of -15.37 MeV. For the resonance, its width is 2.72 MeV with an energy of 63.55 MeV relative to the Λc Σc threshold. And its partial width from the two-body decay channel (Λc Σc − Σc Λc)/ √ 2 is apparently larger than the partial width from the three-body decay channel Λc Λcπ. Especially, the 1 + (0 −− ) and 1 − (1 −+ ) hidden-charm hexaquark molecular states are very interesting. These isovector mesons have exotic J P C quantum numbers which are not accessible to the conventional q q mesons. ( * ) c and Λ c Σ( * ) c channels in the molecule picture. As pointed out in our previous work [61], the cross diagram DD * ↔ D * D of the one-pion-exchange will provide a complex potential, which is from the three-body decay effect. This behavior

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$Σ_cΣ_c$ interactions in chiral effective field theory

Cited by 3 publications

References 102 publications

$Λ_c(2910)$ and $Λ_c(2940)$ as the conventional baryons dressed with the $D^*N$ channel

$Λ_c(2910)$ and $Λ_c(2940)$ as the conventional baryons dressed with the $D^*N$ channel

Phase shifts of the light pseudoscalar meson and heavy meson scattering in heavy meson chiral perturbation theory

Double-charm and hidden-charm hexaquark states under the complex scaling method

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