Low lying axial-vector mesons as dynamically generated resonances

By L. Roca, E. Oset, Jay P. Singh. 2005

177 citations recorded by the source corpus.

We make a theoretical study of the $s$-wave interaction of the nonet of vector mesons with the octet of pseudoscalar mesons starting from a chiral invariant Lagrangian and implementing unitarity in coupled channels. By looking for poles in the unphysical Riemann sheets of the unitarized scattering amplitudes, we get two octets and one singlet of axial-vector dynamically generated resonances. The poles found can be associated with most of the low lying axial-vector resonances quoted by the Particle Data Group: ${b}_{1}(1235)$, ${h}_{1}(1170)$, ${h}_{1}(1380)$, ${a}_{1}(1260)$, ${f}_{1}(1285)$, and two poles to the ${K}_{1}(1270)$ resonance. We evaluate the couplings of the resonances to the $VP$ states and the partial decay widths in order to reinforce the arguments in the discussion.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/9a78654984788f1aae192c12ab4be0ab2d741e83

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In Nuclear and High Energy Physics

Citations in the corpus

Hadronic molecules (2017, background): “Despite that these states could be dynamically generated from the resummed chiral interactions (Lutz and Kolomeitsev, 2004b; Roca et al., 2005), there are various experimental findings consistent with a usual qq̄ nature of the members of the lightest axial nonet, f1(1420), f1(1285), a1(1260), and…”