Pentaquarks

Abstract

Since LEPS collaboration reported the first evidence of ${\Theta }^{+}$ pentaquark in early 2003, eleven other experimental groups have confirmed this exotic state while many other groups didn't see any signal. If this state is further established by future high statistical experiments, its discovery shall be one of the most important events in hadron physics for the past three decades. This exotic baryon with such a low mass and so narrow a width imposes a big challenge to hadron theorists. Up to now, there have appeared more than two hundred theoretical papers trying to interpret this charming state. I will review some important theoretical developments on pentaquarks based on my biased personal views.

arXiv commentReview Commissioned by International Journal of Modern Physics A

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Cited by in corpus (39)

• Pentaquark and Tetraquark states
• New Charmonium States in QCD Sum Rules: a Concise Review
• The Possible Interpretations of Y(4260)
• Detailed Analysis of the Tetraquark Potential and Flip-Flop in SU(3) Lattice QCD
• First Study for the Pentaquark Potential in SU(3) Lattice QCD
• Exotic Tetraquark ud bar[s] bar[s] of J^P=0^+ in the QCD Sum Rule
• Penta-quark baryon in anisotropic lattice QCD
• Exotic and nonexotic magnetic transitions in the context of the SELEX and GRAAL experiments
• Spectrum of the doubly charmed molecular pentaquarks in chiral effective field theory
• Exploring the electromagnetic properties of the ${\Xi }_c^{(\prime ,\ast )}{\bar{D}}_s^{\ast }$ and ${\Omega }_c^{(\ast )}{\bar{D}}_s^{\ast }$ molecular states
• Octet, decuplet and antidecuplet magnetic moments in the chiral quark soliton model revisited
• Surveying the mass spectra and the electromagnetic properties of the ${\Xi }_c^{(\prime ,\ast )}{D}^{(\ast )}$ molecular pentaquarks
• Spectroscopic survey of higher-lying states of $B_c$ meson family
• Pentaquark Decay Width in QCD Sum Rules
• Radiative decays and magnetic moments of the predicted $B_c$-like molecules
• Spin 3/2 Penta-quarks in anisotropic lattice QCD
• New type of doubly charmed molecular pentaquarks containing most strange quarks: Mass spectra, radiative decays, and magnetic moments
• Light-Front Approach for Pentaquark Strong Decays
• Quark spin content of the proton, hyperon semileptonic decays, and the decay width of the ${\Theta }^{+}$ pentaquark
• Phenomenology of spin 3/2 baryons with pentaquarks
• Ground state mass spectrum for scalar diquarks with Bethe-Salpeter equation
• Decay width of the pentaquark state ${\Theta }^{+}(1540)$ with QCD sum rules
• Theoretical Development on Pentaquarks
• Investigating the M1 radiative decay behaviors and the magnetic moments of the predicted triple-charm molecular-type pentaquarks
• Exploring the mass spectrum and the electromagnetic properties of the possible ${\Xi }_{cc}{K}^{(\ast )}$ and ${\Xi }_{cc}{\bar{K}}^{(\ast )}$ molecules
• Role of Large Gluonic Excitation Energy for Narrow Width of Penta-Quark Baryons in QCD String Theory
• Spectroscopic Properties of Double-Strangeness Molecular Tetraquarks
• Spin 3/2 Pentaquarks
• Photoproduction and Radiative Decay of Spin 1/2 and 3/2 Pentaquarks
• Penta-quark in Anisotropic Lattice QCD
• Electric properties of the baryon anti-decuplet in the SU(3) chiral quark-soliton model
• N K Pi molecular state with I=1 and J(Pi)=3/2-
• Electromagnetic characteristics as probes into the inner structures of the predicted ${\Xi }_c^{{(}^{\prime },\ast )}{D}_s^{(\ast )}$ molecular states
• The Possible $J^{PC}{I}^G=2^{++}{2}^{+}$ State X(1600)
• Unveiling the Composition of the Single-Charm Molecular Pentaquarks: Insights from Radiative Decay and Magnetic Moment
• Tetraquark and Pentaquark Systems in Lattice QCD
• Prediction of the masses and decay processes of strange, charmed and bottomed pentaquarks from the linear molecular crypto-heptaquark model
• Reanalysis the pentaquark ${\Theta }^{+}(1540)$ in the framework of QCD sum rules approach with direct instantons
• Exotic hadrons from dynamical clustering of quarks in ultrarelativistic heavy ion collisions