Light and heavy mesons in a soft-wall holographic approach

Abstract

We study the mass spectrum and decay constants of light and heavy mesons in a soft-wall holographic approach, using the correspondence of string theory in Anti-de Sitter space and conformal field theory in physical space-time.Comment: 17 pages, 6 figure

Dynamical spin effects in the pion

“…In previous studies [10,11,12,13], the helicity dependence is assumed to decouple from the dynamics, i.e. the helicity wavefunction carries no momentum dependence.…”

Diffractiveρandϕproduction at HERA using a holographic AdS/QCD light-front meson wave function

“…Solving the holographic Schrödinger equation with this harmonic potential given by Eq. (19) yields the meson mass spectrum [37,38]…”

Holographic estimates of the deconfinement temperature

“…This property was exploited in Ref. [29] for a derivation of the linear confinement potential from the holographic approach and later triggered an active use of the SW models with inverse dilaton profile (see, e.g., [30,31]) in spite of a formal existence of massless vector mode [32]. Thus we see that the black hole and Wilson loop criteria for confinement are in conflict in the simplest version of the SW model.…”

“…Using some modifications of the holographic prescriptions, such a variant of the SW model was proposed in Ref. [31]. Its spectrum reads 1 m 2 = 4a(n + (L + J)/2), where J is the total spin and L denotes the orbital momentum of a quark-antiquark pair.…”