Scalar-isoscalar states, gravitational form factors, and dimension-2 condensates in a large-N{sub c} Regge approach

Journal Article · Mon May 23 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3575030· OSTI ID:21513322

Ruiz Arriola, Enrique ^[1]; Broniowski, Wojciech ^[2]

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1. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Granada, E-18071 Granada (Spain)
2. H. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow (Poland)

Scalar-isoscalar states (J{sup PC} = 0{sup ++}) are analyzed within the large-N{sub c} Regge approach. We find that the lightest f{sub 0}(600) scalar-isoscalar state fits very well into the pattern of the radial Regge trajectory. We confirm the obtained mass values from an analysis of the pion and nucleon spin-0 gravitational form factors, recently measured on the lattice. We find that a simple two-state model suggests a meson nature of f{sub 0}(600), and a glueball nature of f{sub 0}(980), which naturally explains the ratios of various coupling constants. Finally, matching to the OPE requires a fine-tuned mass condition of the vanishing dimension-2 condensate in the Regge approach with infinitely many scalar-isoscalar states.

• OSTI ID: 21513322
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1343; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYONS
BOSONS
CONDENSATES
COUPLING CONSTANTS
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC FORM FACTORS
ELEMENTARY PARTICLES
F0-980 MESONS
FERMIONS
FORM FACTORS
GLUEBALLS
HADRONS
MASS
MESONS
NUCLEONS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUARKS
REGGE TRAJECTORIES
RESONANCE PARTICLES
SCALAR MESONS
SPIN