Published February 2016 | Version v1
Journal article Metadata-only

Analysis of Pc(4380) and Pc(4450)as pentaquark states in the diquark model with QCD sum rules

Creators

  • 1. North China Electric Power University, Department of Physics, Baoding (China)

Description

In this article,we construct the diquark-diquark- antiquark type interpolating currents, and we study the masses and pole residues of the JP = (3)/(2)- and (5)/(2)+ hidden charm pentaquark states in detail with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension-10 in the operator product expansion. In the calculations, we use the formula μ = √(M2Pc-(2Mc)2) to determine the energy scales of the QCD spectral densities. The present predictions favor assigning Pc(4380) and Pc(4450) to be the (3)/(2)- and (5)/(2)+ pentaquark states, respectively. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s10052-016-3920-4

Additional details

Identifiers

DOI
10.1140/epjc/s10052-016-3920-4;

Publishing Information

Journal Title
European Physical Journal. C, Particles and Fields (Online)
Journal Volume
76
Journal Issue
2
Journal Page Range
p. 1-13
ISSN
1434-6052

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
47053546
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BARYONS; EXOTIC RESONANCES; HADRONIC PARTICLE DECAY; MANY-BODY PROBLEM; MANY-DIMENSIONAL CALCULATIONS; OPERATOR PRODUCT EXPANSION; PARTICLE STRUCTURE; QUANTUM CHROMODYNAMICS; QUARK CONDENSATION; QUARK-ANTIQUARK INTERACTIONS; QUARK-QUARK INTERACTIONS; REGGE POLES; REST MASS; SPECTRAL DENSITY; SUM RULES; VACUUM STATES
Descriptors DEC
DECAY; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FIELD THEORIES; FUNCTIONS; HADRONS; INTERACTIONS; MASS; PARTICLE DECAY; PARTICLE INTERACTIONS; QUANTUM FIELD THEORY; RESONANCE PARTICLES; SERIES EXPANSION; SPECTRAL FUNCTIONS