0++ states in a large-Nc Regge approach

2011/10/13 by Arriola, Enrique Ruiz, Broniowski, Wojciech · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.1110.2863

Abstract

Scalar-isoscalar states (J^PC=0⁺⁺) are discussed within the large-N_c Regge approach. We find that the lightest f₀(600) scalar-isoscalar state fits very well into the pattern of the radial Regge trajectory where the resonance nature of the states is advantageously used. 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 provide arguments suggesting an alternating meson-glueball pattern of the 0++ states, which is supported by the pseudoscalar-isovector 0+- excited spectrum and asymptotic chiral symmetry. 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.

Cited by

• Pseudoscalar meson dominance, the pion-nucleon coupling constant and the Goldberger-Treiman discrepancy

Related

• The non-ordinary Regge behavior of the f₀(500) meson
• The J^PC = 0⁺+ scalar meson nonet and glueball of lowest mass
• Large-Nc Regge spectroscopy
• Large-Nc Regge models and the condensate
• The glueball among the light scalar mesons