Analysis of the Pc(4312), Pc(4440), Pc(4457) and related hidden-charm pentaquark states with QCD sum rules
Zhi-Gang wang
Abstract
In this paper, we restudy the ground state mass spectrum of the diquark–diquark–antiquark-type [Formula: see text] pentaquark states with the QCD sum rules by carrying out the operator product expansion up to the vacuum condensates of dimension 13 in a consistent way. The predicted masses support assigning the [Formula: see text] to be the hidden-charm pentaquark state with [Formula: see text], assigning the [Formula: see text] to be the hidden-charm pentaquark state with [Formula: see text], [Formula: see text] or [Formula: see text], assigning the [Formula: see text] to be the hidden-charm pentaquark state with [Formula: see text] or [Formula: see text].
Topics & Concepts
PentaquarkPhysicsParticle physicsQCD sum rulesOperator product expansionState (computer science)Operator (biology)Ground stateTetraquarkDimension (graph theory)Quantum chromodynamicsSpectrum (functional analysis)Product (mathematics)Sum rule in quantum mechanicsInvariant massMass spectrumVacuum stateBaryonQuantum Chromodynamics and Particle InteractionsBlack Holes and Theoretical PhysicsParticle physics theoretical and experimental studies