Decay of axial-vector mesons into VP andPγ

2003/06/30 by L. Roca, J. E. Palomar, J.E. Palomar +1 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.70.094006

published as Phys.Rev. D70 (2004) 094006 · 17 pages, 1 figure; version accepted in Phys. Rev. D

arxiv created 2004/08/26 · openalex publication_date 2004/11/05 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

Abstract

We propose a phenomenological Lagrangian for the decay of the SU(3) nonets of the axial-vector mesons of J^PC=1^+\ensuremath-,1⁺⁺ into a vector meson and a pseudoscalar constructed with tensor fields for the vector and axial-vector mesons. The formulation leads to a good reproduction of the different decay branching ratios and assuming vector meson dominance (VMD) it also leads to good results for the radiative decay of the a₁ into pion and photon, and in agreement with the structure proposed in the chiral tensor formulation of radiative decay of axial-vector mesons. The two SU(3) parameters and the mixing angle of K_1A and K_1B needed to give the physical K₁(1270) and K₁(1400) resonances are also determined.

Citations

• Describinga1andb1decays
• Nature of Light Scalar Mesons from their Large-NcBehavior
• Constraint on axial-vector meson mixing angle from the nonrelativistic constituent quark model
• Chiral perturbation theory to one loop
• N/Ddescription of two meson amplitudes and chiral symmetry
• Chiral perturbation theory: Expansions in the mass of the strange quark
• Anomalous Ward Identities in Spinor Field Theories

Cited by

• Strange axial-vector mesons mixing angle
• Clues for the existence of twoK1(1270)resonances