Pentaquark and diquark-diquark clustering: a QCD sum rule approach

Abstract

In this work we study the Theta(1540) in the framework of QCD sum rules based on (ud)^2\bar{s} diquark clustering as suggested by Jaffe and Wilczek. Within errors, the mass of the pentaquark is compatible with the experimentally measured value. The mass difference between the Theta and the pentaquark with the quantum numbers of the nucleon amounts to 70 MeV, consistent with the interpretation of the N(1440) as a pentaquark.

arXiv comment10 pages, 3 figures; discussions extended, references added, version to appear in Phys. Lett. B

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Cited by in corpus (25)

• Analysis of $P_c^{+}(4380)$ and $P_c^{+}(4450)$ as pentaquark states in the molecular picture with QCD sum rules
• A study of pentaquarks on the lattice with overlap fermions
• $S$-wave $D^{(\ast )}N$ molecular states: ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940{)}^{+}$?
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Pentaquark baryons in SU(3) quark model
• Are There Diquarks in the Nucleon?
• Pentaquark Decay Width in QCD Sum Rules
• QCD sum rules for the anti-charmed pentaquark
• Study of $X_c(3250)$ as a $D_0^{\ast }(2400)N$ molecular state
• A QCD sum rule analysis of the pentaquark
• Pentaquark state in pole-dominated QCD sum rules
• ${\Theta }^{+}$ Hypernuclei
• Axial vector tetraquark with S=+2
• Spin-3/2 pentaquark in the QCD sum rule
• Magnetic moment of the pentaquark ${\Theta }^{+}(1540)$ with QCD sum rules
• Magnetic moment of the pentaquark ${\Theta }^{+}(1540)$ with light-cone QCD sum rules
• Spin 3/2 Pentaquarks
• Spin-3/2 Pentaquark in QCD Sum Rules
• Possible quantum numbers of the pentaquark Θ^+(1540) in QCD sum rules
• Calculating loops without loop calculations: NLO computation of pentaquark correlators
• Chiral Soliton Model vs Pentaquark Structure for Θ(1540)
• Pentaquark from QCD sum rules: consequences of the diquark approach
• Pentaquark Decay in QCD Sum Rules
• Theta pentaquark In Multiquark Theories
• A dynamical study of the pentaquark Theta+ state