L. Roca

Low Lying axial-vector mesons as dynamically generated resonances

We make a theoretical study of the

Mass dependence of inclusive nuclear φ photoproduction

s

The Role of Delta(1700) excitation and rho production in double pion photoproduction

-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:

The LHCb pentaquark as a

{b}_{1}(1235)

\bar{D}^*\Sigma_c-\bar{D}^*\Sigma_c^*

,

molecular state

{h}_{1}(1170)

The σ meson in a nuclear medium through two pion photoproduction

,

Unitary chiral dynamics in J/Psi ---> VPP decays and the role of scalar mesons

{h}_{1}(1380)

Sequential vector and axial-vector meson exchange and chiral loops in radiative phi decay

,

Decay of axial vector mesons into VP and P gamma

{a}_{1}(1260)