Hadron Spectroscopy (theory): Diquarks, Tetraquarks, Pentaquarks and no quarks

Abstract

States beyond those expected in the simple constituent quark model are now emerging. I focus on the scalar glueball and its mixing with states in the $q\bar{q}$ nonet, and also on correlations in Strong QCD that may form diquarks and seed $qq\bar{q}\bar{q}$ states. Some models of the pentaquark candidate $\Theta (1540)$ are critically discussed.

Plenary talk at ICHEP04

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Width of the J^P=1/2^+ pentaquark in the quark-diquark model
• Photoproduction of ${\Theta }^{+}$ and other pentaquark states
• Glueball hunting in $e^{+}{e}^{-}\to J/\psi \to \varphi f_0$

Cited by in corpus (20)

• New Charmonium States in QCD Sum Rules: a Concise Review
• A Candidate for $1^{--}$ Strangeonium Hybrid
• Dynamical calculation of the $\Delta \Delta$ dibaryon candidates
• Effects of S-wave thresholds
• Quark models of dibaryon resonances in nucleon-nucleon scattering
• Composition of the Pseudoscalar Eta and Eta' Mesons
• A lattice study of the masses of singlet 0++ mesons
• Deciphering the nature of X(3872) in heavy ion collisions
• Threshold effect and π^\pm ψ(2S) peak
• Hadron Spectroscopy: Theory and Experiment
• Further study of the $N\Omega$ dibaryon within constituent quark models
• Heavy Quark Spectroscopy -- Theory Overview
• Chiral SU(3) Quark Model Study of Tetraquark States: $cn\bar{n}\bar{s}/cs\bar{s}\bar{s}$
• Structure of Light Scalar Mesons from D_s and D^0 Non-Leptonic Decays
• The structure of the X(3872) as explained by a Diffusion Monte Carlo calculation
• X(1576) as Diquark-Antidiquark Bound State
• Search for a promising tetraquark candidate $X(ud\bar{s}\bar{s})$ in $pn\to \Lambda \Lambda X$
• Non-perturbative Analysis of Various Mass Generation by Gluonic Dressing Effect with the Schwinger-Dyson Formalism in QCD
• Low-lying exotic mesons in the coupled-channel formalism
• ${\bar{D}}^0{D}^{0\ast }$ $(D^0{\bar{D}}^{0\ast })$ System in QCD-Improved Many Body Potential