$P_{c}(4457) \to P_{c}(4312) π/γ$ in the molecular picture

Ling, Xi-Zhe; Lu, Jun-Xu; Liu, Ming-Zhu; Geng, Li-Sheng

doi:10.48550/arxiv.2106.12250

Cited by 7 publications

(9 citation statements)

References 44 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where Λ is a size parameter, which is expected to be around 1 GeV [24,25], and P E is the Euclidean momentum. The coupling of g T cc can be estimated by reproducing the binding energy of the T cc state via the compositeness condition [26][27][28].…”

Section: Theoretical Formalismmentioning

confidence: 99%

Can we understand the decay width of the $T_{cc}^+$ state?

Ling,

Liu,

Geng

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Inspired by the discovery of a doubly charmed tetraquark state T + cc by the LHCb Collaboration and based on the prediction of a doubly charmed DD * molecule with I(J P ) = 0(1 + ) in our recent works, [Phys.Rev.D 102 (2020), 091502] and [Phys.Rev.D 99 (2019), 094018], we employ the effective Lagrangian approach to investigate the decay width of T cc → DDπ and T cc → DDγ. We show that both the T cc → DDπ and T cc → DDγ modes contribute to the decay width of T cc , with the former playing a more important role. However, within the DD * molecule picture, the obtained decay width is rather small compared with the experimental value of Γ = 410 ± 175 keV. We argue that the existence of a compact tetraquark component cannot lead to an appreciable increase of the decay width. As a result, the discrepancy may indicate that either T cc is more likely a near threshold DD * resonance or the decay width is close to the lower experimental boundary.

show abstract

Section: Theoretical Formalismmentioning

confidence: 99%

Can we understand the decay width of the $T_{cc}^+$ state?

Ling,

Liu,

Geng

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The analyses for such processes can be found in Refs. [67,68,83,[87][88][89][90][91][92][93][94][95][96][97][98][99][100][101].…”

Section: Introductionmentioning

confidence: 99%

Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays

Azizi,

Sarac,

Sundu

2021

Preprint

View full text Add to dashboard Cite

This work presents an analysis of a hidden charmed pentaquark candidate state with double strange quark in its quark content. The investigation is performed in two parts, which provide the mass prediction of the considered state and its partial decay width for the Pcss → Ξ 0 J/ψ channel. For the analyses, two-point and three-point QCD sum rule methods are applied to get the mass and the width, respectively. The mass for this candidate state is obtained as mP css = 4600 ± 155 MeV with corresponding current coupling constant λP css = (0.81 ± 0.21) × 10 −3 GeV 6 . These results are used in the analysis of the partial width of this state for the decay Pcss → Ξ 0 J/ψ. For this decay, the width is obtained as Γ = 9.52 ± 2.85 MeV. These results may shed light on the future experimental searches in which such types of states are probed and may provide information to discriminate between such possible observations.

show abstract

“…The decay width of P c (4457) → P c (4312) is also studied in the molecular picture in Ref. [28]. A hadronic triangle loop is introduced between the initial and final states.…”

Section: Discussionmentioning

confidence: 99%

“…Meanwhile, other explanations were also tried, such as hadro-charmonium [16], compact pentaquark states [17][18][19][20][21][22][23][24], virtual states [25] and triangle singularities [26]. The triangle mechanism is applied to investigate the decays of the P c states [9,27,28]. For reviews see the Refs.…”

Section: 7mentioning

confidence: 99%

Magnetic moments and transition magnetic moments of $P_c$ and $P_{cs}$ states

Li,

Liu,

Sun

et al. 2021

Preprint

View full text Add to dashboard Cite

We study the magnetic moments and transition magnetic moments of P c and P cs states in the molecular picture. We first revisit the magnetic moments of P c states as the S wave molecular states without coupled channel effects. The coupled channel effects and the D wave contributions are then investigated carefully. The coupled channel effects contribute to the change of 0.1 ∼ 0.4 nuclear magneton µ N for most cases while the D wave only induces the variation of less than 0.03 µ N . In addition, we obtain the transition magnetic moments between different P c states and the related electromagnetic decay widths of P ′ c → P c γ. The magnetic moments of P cs are much different for the assumption of spin being 1/2 and 3/2. The study of electromagnetic properties will help us disclose further the structure of these unconventional states.

show abstract

$P_{c}(4457) \to P_{c}(4312) π/γ$ in the molecular picture

Abstract: The three pentaquark states, P c (4312), P c (4440), and P c (4457), discovered by the LHCb Collaboration in 2019, can be nicely arranged into a multiplet of D( * ) Σ ( * ) c of seven molecules dictated by heavy quark spin

Cited by 7 publications

References 44 publications

Can we understand the decay width of the $T_{cc}^+$ state?

Can we understand the decay width of the $T_{cc}^+$ state?

Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays

Magnetic moments and transition magnetic moments of $P_c$ and $P_{cs}$ states

Contact Info

Product

Resources

About