Comprehending heavy charmonia and their decays by hadron loop effects

Abstract

We present that including the hadron loop effects could help us to understand the spectrum of the heavier charmonium-like states and their decays simultaneously. The observed states could be represented by the poles on the complex energy plane. By coupling to the opened thresholds, the pole positions are shifted from the bare states predicted in the quenched potential model to the complex energy plane. The pole masses are generally pulled down from the bare masses and the open-charm decay widths are related to the imaginary parts of the pole positions. Moreover, we also analyze the pole trajectory of the ${\chi }_{c1}(2P)$ state while the quark pair production rate from the vacuum changes in its uncertainty region, which indicates that the enigmatic X(3872) state may be regarded as a $1^{++}$ $c\bar{c}$ charmonium-dominated state dressed by the hadron loops as the others.

7 pages, 1 figure, 2 tables

References in corpus (14)

• Heavy quarkonium: progress, puzzles, and opportunities
• Higher Charmonia and X,Y,Z states with Screened Potential
• Search for new charmonium states in the processes e+ e- --> J/psi D(*) D(*) at sqrt{s} ~ 10.6 GeV
• Evidence for the decay $X(3872)\to \psi (2S)\gamma$
• Hadron Loops: General Theorems and Application to Charmonium
• Decay channels and charmonium mass-shifts
• Observation of the chi_c2(2P) meson in the reaction gamma gamma -> D Dbar at BABAR
• Dynamical origin and the pole structure of X(3872)
• Where is the χ_{c0}(2P)?
• Ambiversion of X(3872)
• B_{s1}(5830) and B_{s2}^*(5840)
• Interpretations for the X(4160) observed in the double charm production at B factories
• Delicate interplay between the D0-D*0, rho0-J/psi, and omega-J/psi channels in the X(3872) resonance
• Light $O^{++}$ Mesons: Scalargators in Florida

Cited by in corpus (16)

• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• The $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$ in the relativized quark model
• Charmonium resonances in the 3.9 GeV/$c^2$ energy region and the $X(3915)/X(3930)$ puzzle
• Could the $X(3915)$ and the $X(3930)$ Be the Same Tensor State?
• Coupled-Channel Effects for the Bottomonium with Realistic Wave Functions
• Virtual states and generalized completeness relation in the Friedrichs Model
• Comprehending Isospin breaking effects of $X(3872)$ in a Friedrichs-model-like scheme
• On Friedrichs Model with Two Continuum States
• Partial Wave Decomposition in Friedrichs Model With Self-interacting Continua
• Charmonium states in a coupled-channel model
• On leptonic width of $X(4260)$
• Hindered magnetic dipole transitions between P-wave bottomonia and coupled-channel effects
• Is the $3S$-$2D$ mixing strong for the charmonia $\psi (4040)$ and $\psi (4160)$?
• Coupled-channel meson-meson scattering in the diabatic framework
• Proposed mixing between $2P$ and $1F$ wave charmonia