Composite and elementary natures of a1(1260) meson

Abstract

We develop a practical method to analyze the mixing structure of hadrons consisting of two components of quark-composite and hadronic composite. As an example we investigate the properties of the axial vector meson a1(1260) and discuss its mixing properties quantitatively. We also make reference to the large Nc procedure and its limitation for the classification of such a mixed state.

13 pages, 4 figures

References in corpus (7)

• Origin of resonances in the chiral unitary approach
• Hidden gauge formalism for the radiative decays of axial-vector mesons
• Baryons in Holographic QCD
• Ordinary and Extraordinary Hadrons
• Information on the structure of the a1 from tau decay
• Quantum loops in radiative decays of the $a_1$ and $b_1$ axial-vector mesons
• Radiative decay into $\gamma P$ of the low lying axial-vector mesons

Cited by in corpus (29)

• Compositeness of dynamically generated states in a chiral unitary approach
• Structure and compositeness of hadron resonances
• Tracing masses of ground-state light-quark mesons
• New insights into the $D_{s0}^{\ast }(2317)$ and other charm scalar mesons
• Pseudocalar meson and vector meson interactions and dynamically generated axial-vector mesons
• Exotic baryons from a heavy meson and a nucleon - Positive parity states -
• Pole position of the $a_1(1260)$ resonance in a three-body unitary framework
• Revising the $f_1(1420)$ resonance
• Pole position of the $a_1(1260)$ from $\tau$-decay
• Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach
• Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD
• Elementarity of composite systems
• New insights into the nature of the $\Lambda (1380)$ and $\Lambda (1405)$ resonances away from the SU(3) limit
• The $K\bar{K}\pi$ decay of the $f_1(1285)$ and its nature as a $K^{\ast }\bar{K}-cc$ molecule
• Understanding the nature of $\Omega (2012)$ in a coupled-channel approach
• Pseudotensor mesons as three-body resonances
• The three-pion decays of the $a_1(1260)$
• Role of the triangle mechanism in the ${\Lambda }_b\to {\Lambda }_c{\pi }^{-}{f}_0(980)$ reaction
• The vertex corrections due to the triangle singularity mechanism in the light axial vector meson couplings to $K^{\ast }\bar{K}+c.c.$
• Molecular nature of the $a_1$(1260) axial-vector meson
• Compositeness of hadrons, nuclei, and atomic systems
• Composite and elementary nature of a resonance in the sigma model
• Tau decay into ${\nu }_{\tau }$ and $a_1(1260)$, $b_1(1235)$, and two $K_1(1270)$
• Decay rates $f_1(1285)\to {\rho }^0{\pi }^{+}{\pi }^{-}$ and $a_1(1260)\to \omega {\pi }^{+}{\pi }^{-}$ in the Nambu -- Jona-Lasinio model
• Study of $a_1(1260)$ in the $\gamma p\to {\pi }^{+}{\pi }^{+}{\pi }^{-}n$ reaction
• $\tau \to {\nu }_{\tau }{\rho }^0{\pi }^{-}$ decay in the Nambu - Jona-Lasinio model
• Complex 2D Matrix Model and Geometrical Map on Complex-Nc Plane
• Spectroscopy of $a_1$ mesons from lattice QCD with the truncated overlap fermions
• Hadronic few-body systems in chiral dynamics, -- Few-body systems in hadron physics --