Pentaquark hadrons from lattice QCD

Abstract

We study spin 1/2 isoscalar and isovector candidates in both parity channels for the recently discovered Θ^+(1540) pentaquark particle in quenched lattice QCD. Our analysis takes into account all possible uncertainties, such as statistical, finite size and quenching errors when performing the chiral and continuum extrapolations and we have indications that our signal is separated from scattering states. The lowest mass that we find in the I^P=0^- channel is in complete agreement with the experimental value of the Θ^+ mass. On the other hand, the lowest mass state in the opposite parity I^P=0^+ channel is much higher. Our findings suggests that the parity of the Θ^+ is negative.

13 pages, 5 figures. Final version, appeared in JHEP

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• Lattice study of exotic S=+1 baryon
• Quenched spectroscopy with fixed-point and chirally improved fermions
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• Interpretation of the Theta+ as an isotensor pentaquark with weakly decaying partners
• Z^* Resonances: Phenomenology and Models
• Phenomenology of the Pentaquark Antidecuplet
• On photoexcitation of baryon antidecuplet
• Pentaquark states in a chiral potential
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• ${\Theta }^{+}$ in a chiral constituent quark model and its interpolating fields
• The Theta+ (1540) as a heptaquark with the overlap of a pion, a kaon and a nucleon
• Photoproduction of Theta baryon from the neutron
• Pentaquark baryon production at the Relativistic Heavy Ion Collider
• Cross sections for pentaquark baryon production from protons in reactions induced by hadrons and photons
• The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark
• Pentaquark Theta+, constituent quark structures, and prediction of charmed Theta(c)^0 and bottomed Theta(b)^+
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• Group theory and the Pentaquark
• Are there non-strange low-lying penta-quarks and can we understand their width
• Decay Probability Ratio of Pentaquark Theta^+ State

Cited by in corpus (119)

• Observation of an Exotic Baryon with S=+1 in Photoproduction from the Proton
• Evidence for a narrow |S|=1 baryon state at a mass of 1528 MeV in quasi-real photoproduction
• Two lectures on color superconductivity
• Light Hadron Masses from Lattice QCD
• Lattice study of exotic S=+1 baryon
• Chiral-Soliton Predictions for Exotic Baryons
• Analysis of $P_c^{+}(4380)$ and $P_c^{+}(4450)$ as pentaquark states in the molecular picture with QCD sum rules
• Z^* Resonances: Phenomenology and Models
• A study of pentaquarks on the lattice with overlap fermions
• First Study for the Pentaquark Potential in SU(3) Lattice QCD
• Is Theta+(1540) a Kaon--Skyrmion Resonance?
• Parity of ${\Theta }^{+}$(1540) from QCD sum rules
• Pentaquark baryon production at the Relativistic Heavy Ion Collider
• A Method to Unambiguously Determine the Parity of the Theta+ Pentaquark
• Penta-quark baryon in anisotropic lattice QCD
• The pentaquark in K-plus-d total cross section data
• Signatures of S-wave bound-state formation in finite volume
• Systematics of Exotic Cascade Decays
• Baryon Spectroscopy in Lattice QCD
• Is the Theta+ a K pi N bound state?
• Light-Front Approach for Heavy Pentaquark Transitions
• Spectroscopy of pentaquark states
• A Naturally Narrow Positive Parity Theta^+
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• The static tetraquark and pentaquark potentials
• Anti-charmed pentaquark ${\Theta }_c(3099)$ from QCD sum rules
• Search for the possible S=+1 Pentaquark states in Quenched Lattice QCD
• Search for the pentaquark resonance signature in lattice QCD
• Multiparticle States and the Hadron Spectrum on the Lattice
• Pentaquark baryons in SU(3) quark model
• Study of $Thet{a}^{+}(udud\bar{s})$ in lattice QCD with exact chiral symmetry
• Extraction of the pion-nucleon sigma-term from the spectrum of exotic baryons
• Study the exotic ${\Theta }^{+}$ with polarized photon beams
• How to measure the parity of the ${\Theta }^{+}$ in $\vec{p}\vec{p}$ collisions
• On the Existence of Heavy Pentaquarks: The large Nc and Heavy Quark Limits and Beyond
• Experimental Review on Pentaquarks
• Magnetic moments of antidecuplet pentaquarks
• Magnetic Moment of The ${\Theta }^{+}$ Pentaquark State
• Pentaquark and diquark-diquark clustering: a QCD sum rule approach
• Theta^+ baryon production in KN and NN reactions
• Light hadron and diquark spectroscopy in quenched QCD with overlap quarks on a large lattice
• Properties of baryon anti-decuplet
• Masses of fully-heavy tetraquark states from a four-quark static potential model
• Exotic states of matter in heavy meson decays
• Heavy Pentaquarks
• Pentaquark ${\Theta }^{+}$ production from the reaction $\gamma p\to {\pi }^{+}{K}^{-}{\Theta }^{+}$
• Instanton induced quark dynamics and the pentaquark
• A Diquark Chiral Effective Theory and Exotic Baryons
• Spin 3/2 Pentaquark Resonance Signature in Lattice QCD
• Pentaquarks: Review on Models and Solitonic Calculations of Antidecuplet Magnetic Moments
• Present status on experimental search for pentaquarks
• Prediction of Narrow $J^{\pi }=1/2^{+}$, $3/2^{+}$, and $3/2^{-}$ states of ${\Theta }_{+}$ in a Quark model with Antisymmetrized Molecular Dynamics
• Prospects for Pentaquark Production at Meson Factories
• Spin 3/2 Penta-quarks in anisotropic lattice QCD
• Low-lying $\Lambda$ Baryons with spin 1/2 in Two-flavor Lattice QCD
• QCD sum rules for the anti-charmed pentaquark
• A lattice study of the pentaquark states
• Spin observables and the determination of the parity of ${\Theta }^{+}$ in photoproduction reactions
• Negative parity pentaquarks in large Nc QCD and quark model
• A comprehensive search for the Θ^+ pentaquark on the lattice
• A QCD Sum Rule Study of ${\Theta }^{+}$ in Nuclear Matter
• Light-Front Approach for Pentaquark Strong Decays
• Even Parity $\Theta$-Pentaquark and Stable Strange Nuclear Matter
• A Phenomenological Lagrangian Approach to Two Kaon Photoproduction and Pentaquark Searches
• Pentaquarks: Status and Perspectives for Lattice Calculations
• Spin-3/2 pentaquark in the QCD sum rule
• Comparative Regge analysis of $\Lambda ,{\Sigma }^0,\Lambda (1520)$ and ${\Theta }^{+}$ production in $\gamma p$, $\pi p$ and $pp$ reactions
• A Comparative Study of Pentaquark Interpolating Currents
• Spin asymmetries in gamma + N --> K*bar + Theta^+
• Pentaquark baryon production from photon-neuteron reactions
• Threshold production of the ${\Theta }^{+}$ in a polarized proton reaction
• Photoproduction of pentaquark cascades from nucleons
• Determining Pentaquark Quantum Numbers from Strong Decays
• Broken SU(3) antidecuplet for ${\Theta }^{+}$ and ${\Xi }_{3/2}$
• Polarization observables in the processes $p+p\to {\Theta }^{+}+{\Sigma }^{+}$ and $n+p\to {\Theta }^{+}+{\Lambda }^0$, for any spin and parity of the ${\Theta }^{+}$-hyperon in the threshold region
• Magnetic moment of the pentaquark ${\Theta }^{+}(1540)$ with QCD sum rules
• Absence of evidence for pentaquarks on the lattice
• Are the anti-charmed and bottomed pentaquarks molecular heptaquarks?
• Magnetic moment of the pentaquark ${\Theta }^{+}(1540)$ with light-cone QCD sum rules
• Hadronic Decays Involving Heavy Pentaquarks
• Heavy and Light Pentaquark Chiral Lagrangian
• The pentaquark potential, mass and density-density correlator
• The anti-decuplet candidate Xi--(1862) as a heptaquark with the overlap of two anti-kaons and a nucleon
• Pentaquarks $uudd\bar{q}$ with One Color Sextet Diquark
• Phenomenological constraints on the Jaffe-Wilczek model of pentaquarks
• Mixing of Pentaquark and Molecular States
• Prospects for Pentaquark Searches in $e^{+}{e}^{-}$ Annihilations and $\gamma \gamma$ Collisions
• Moments of inertia, nucleon axial-vector coupling, the {\bf 8}, {\bf 10}, $\overline{10}$ and ${27}_{3/2}$ mass spectrums and the higher SU(3)_f representation mass splittings in the Skyrme model
• Theta++ from QCD sum rule
• Model-independent methods to measure the $P$-parity of the ${\Theta }^{+}$-pentaquark in photoproduction experiments
• Stable Pentaquarks from Strange Chiral Multiplets
• Investigate the pentaquark resonance in the $NK$ system
• Penta-quark in Anisotropic Lattice QCD
• Possibility of determinig the parity of the pentaquark ${\Theta }^{+}$ from photoproduction near threshold
• Calculating loops without loop calculations: NLO computation of pentaquark correlators
• Relativistic five-quark equations and negative parity pentaquarks
• Faddeev calculation of pentaquark ${\Theta }^{+}$ in the Nambu-Jona-Lasinio model-based diquark picture
• Looking for pentaquarks in Lattice QCD
• Structure and reactions of pentaquark baryons
• Possible production of exotic baryonia in relativistic heavy-ion collisions
• Prediction of the masses and decay processes of strange, charmed and bottomed pentaquarks from the linear molecular crypto-heptaquark model
• Pentaquarks in string dynamics
• The Skyrme model predictions for the ${27}_{J=3/2}$ mass spectrum and the ${27}_{3/2}$-$\overline{10}$ mass splittings
• The Quark Structure of Pentaquarks
• Pentaquarks in the Jaffe-Wilczek approximation
• Lattice study of scattering phase shifts for $D{D}^{\ast }$ and $B{B}^{\ast }$ systems using twisted boundary conditions: Search for bound state formation
• Antikaon angular distributions in the reaction $\gamma d\to K^{-}{\Theta }^{+}p\to K^{-}{K}^{+}np$ near the threshold and the parity of the ${\Theta }^{+}$ pentaquark
• Pentaquark Masses in Chiral Perturbation Theory
• P-wave Pentaquark and its Decay in the Quark Model with Instanton Induced Interaction
• Baryons on the lattice
• Effect of Chiral Symmetry Restoration on Pentaquark ${\Theta }^{+}$ Mass and Width at Finite Temperature and Density
• Search for the Theta^+(1540) in lattice QCD
• Stability of the rotating SU(3) Skyrmion
• Mass Spectra of Pentaquarks -- Overlap versus Wilson Fermions
• $P$-parity of charm and strange particles in electroproduction processes, in collinear regime
• Angular distribution and azimuthal asymmetry for pentaquark production in proton-proton collisions
• Revisiting the pentaquark episode for lattice QCD
• Heavy Pentaquarks in the Diquark Model and the Large N_c Expansion
• Penta-Quark Anti-Decuplet in Anisotropic Lattice QCD