Nature of the axial-vector mesons from their Nc behavior within the chiral unitary approach

Abstract

By describing within the chiral unitary approach the s-wave interaction of the vector meson nonet with the octet of pseudoscalar Goldstone Bosons, we find that the main component of the axial vector mesons b_1(1235), h_1(1170), h_1(1380), a_1(1260), f_1(1285) and the two states associated to the K_1(1270) does not follow the QCD dependence on the number of colors for ordinary qqbar mesons.

18 pages, 5 figures, to be published in EPJA

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Cited by in corpus (34)

• The nature of the Lambda(1405) resonance in chiral dynamics
• SU(N) gauge theories at large N
• Compositeness of dynamically generated states in a chiral unitary approach
• Vacuum Properties of Mesons in a Linear Sigma Model with Vector Mesons and Global Chiral Invariance
• Structure and compositeness of hadron resonances
• Probabilistic interpretation of compositeness relation for resonances
• Resonance Chiral Lagrangian Currents and Experimental Data for ${\tau }^{-}\to {\pi }^{-}{\pi }^{-}{\pi }^{+}{\nu }_{\tau }$
• Mesons in large-N QCD
• Pseudocalar meson and vector meson interactions and dynamically generated axial-vector mesons
• Dynamical generation and dynamical reconstruction
• Low-lying even parity meson resonances and spin-flavor symmetry
• Phenomenology of axial-vector and pseudovector mesons: decays and mixing in the kaonic sector
• Introductory lectures to large-N QCD phenomenology and lattice results
• Axial resonances a1(1260), b1(1235) and their decays from the lattice
• Composite and elementary natures of a1(1260) meson
• Axial meson exchange and the $Z_c(3900)$ and $Z_{cs}(3985)$ resonances as heavy hadron molecules
• Nature of the sigma meson as revealed by its softening process
• Low-lying even parity meson resonances and spin-flavor symmetry revisited
• The ${\Lambda }_c(2595)$ resonance as a dynamically generated state: the compositeness condition and the large $N_c$ evolution
• Signatures of the two $K_1(1270)$ poles in $D^{+}\to \nu e^{+}VP$ decay
• Theoretical description of the $\mathbf{J}/\mathbf{\psi }\to \mathbf{\eta }({\mathbf{\eta }}^{\prime }){\mathbf{h}}_1(1380)$, $\mathbf{J}/\mathbf{\psi }\to \mathbf{\eta }({\mathbf{\eta }}^{\prime }){\mathbf{h}}_1(1170)$ and $\mathbf{J}/\mathbf{\psi }\to {\mathbf{\pi }}^0{\mathbf{b}}_1(1235{)}^0$ reactions
• Pseudotensor mesons as three-body resonances
• Partial decay widths of $\varphi (2170)$ to kaonic resonances
• The $\Lambda (1405)$ as a Hybrid
• Properties of light resonances from unitarized Chiral perturbation theory: Nc behavior and quark mass dependence
• The three-pion decays of the $a_1(1260)$
• Chiral Structure of Vector and Axial-Vector Tetraquark Currents
• Properties of hadrons in a chiral model with (axial-)vector mesons
• OPE of Green Functions of Chiral Currents
• Study of $a_1(1260)$ in the $\gamma p\to {\pi }^{+}{\pi }^{+}{\pi }^{-}n$ reaction
• A helpful analogy between the covalent bond and Particle Spectroscopy
• On the three-point order parameters of chiral symmetry breaking
• Complex 2D Matrix Model and Geometrical Map on Complex-Nc Plane
• $N_C$ evolution of the light meson resonances