Diabatic description of charmoniumlike mesons II: mass corrections and strong decay widths

Abstract

From a diabatic bound state approach to $J^{PC}=1^{--}$ and $(0,1,2{)}^{++}$ charmoniumlike resonances below $4.1$ GeV, formulated in terms of $c\overline{c}$ and closed meson-meson channels, we calculate mass shifts and widths due to open meson-meson channels. This calculation does not involve any new free parameter, so comparison of our predictions with existing data provides a direct test of our approach. Further mass corrections are also estimated and good agreement with the measured masses comes out. As for the calculated widths, overall reasonable, they point out to the need of some refinement of our current bound state approximation for an accurate description of data. These results give additional support to the diabatic approach in QCD as an adequate framework for a complete unified description of conventional and unconventional charmoniumlike resonances. In this respect, the experimental discovery of a predicted $2^{++}$ resonance with a mass around $4$ GeV would be of special relevance.

arXiv comment9 pages, 5 tables; v2: new appendix, extended Introduction and Results, additional references, other small additions and corrections

References in corpus (30)

• Heavy quarkonium: progress, puzzles, and opportunities
• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• The $XYZ$ states: experimental and theoretical status and perspectives
• Multiquark Resonances
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Higher Charmonia
• Pentaquark and Tetraquark states
• Heavy-Quark QCD Exotica
• Mesons with Beauty and Charm: Spectroscopy
• A review of the open charm and open bottom systems
• Observation of String Breaking in QCD
• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• Charmonium levels near threshold and the narrow state $X(3872) \to π^{+}π^{-}\jpsi$
• Ab Initio Study of Hybrid b-bar-gb Mesons
• Born-Oppenheimer Approximation for the XYZ Mesons
• New states above charm threshold
• Hadron Loops: General Theorems and Application to Charmonium
• Interpretation of the X(3872) as a charmonium state plus an extra component due to the coupling to the meson-meson continuum
• Decay channels and charmonium mass-shifts
• String breaking by light and strange quarks in QCD
• Charmonium spectroscopy and mixing with light quark and open charm states from nF=2 lattice QCD
• Channel coupling in heavy quarkonia: energy levels, mixing, widths and new states
• Charmonium resonances in the 3.9 GeV/$c^2$ energy region and the $X(3915)/X(3930)$ puzzle
• The BESIII Physics Programme
• Quarkonium at the Frontiers of High Energy Physics: A Snowmass White Paper
• Diabatic description of charmonium-like mesons
• Bottomonium resonances with $I=0$ from lattice QCD correlation functions with static and light quarks
• Modern meson spectroscopy: the fundamental role of unitarity
• Charmonium resonances on the lattice

Cited by in corpus (5)

• One Born$-$Oppenheimer Effective Theory to rule them all: hybrids, tetraquarks, pentaquarks, doubly heavy baryons and quarkonium
• Diabatic description of bottomoniumlike mesons
• Model-independent predictions for decays of hidden-heavy hadrons into pairs of heavy hadrons
• Exotic Hadrons from Scattering in the Diabatic Dynamical Diquark Model
• Coupled-channel meson-meson scattering in the diabatic framework