Phenomenology Of The Holographic Soft-Wall Model Of QCD With "Reversed" Dilaton

We study the phenomenology of the recently proposed modified version of the Soft-Wall model of holographic QCD with a negative dilaton profile. We investigate vector and scalar mesons, evaluating mass spectra, decay constants and two-point correlation functions. We then study chiral symmetry breaking and compute the coupling of a scalar meson with two pseudoscalars. Finally, we compare the results with the ones found in the literature in the positive-dilaton case.Comment: Latex, 4 pages, talk given at "QCD@Work 2010 - International Workshop on QCD - Theory and Experiment", June 20-23 2010, Martina Franca, Ital

Holographic scalar mesons

A holographic description of scalar mesons is presented, in which two- and three-point functions are holographically reconstructed. Mass spectrum, decay constants, eigenfunctions and the coupling of the scalar states with two pseu- doscalars are found. A comparison of the results with current phenomenology is discussed.Comment: 4 pages, talk given at IFAE 2009 (Incontri di Fisica delle Alte Energie 2009), Bari, Italy, 15-17 Apr 200

On the Son-Yamamoto relation in the soft-wall holographic model of QCD

We study the vertex function of two vector and one axial-vector operators in the soft-wall holographic model of QCD. In particular, we discuss the possible relation, introduced by Son and Yamamoto, between the structure function $w_T$ describing such a vertex when one of the two vector currents represents an on-shell soft photon and the the two-point $\Pi_\perp^{VV}-\Pi_\perp^{AA}$ correlation function.Comment: contribution to conference QCD@Work - International Workshop on QCD - Theory and Experiment, 18-21 June 2012, Lecce - Ital

Puzzles in charm spectroscopy

We briefly analyze aspects of open and hidden charm resonances, discussing in particular the mesons $D_{sJ}(2860)$ and X(3872).Comment: 8 pages, 4 figures. Invited talk given at the YKIS Seminar on New Frontiers in QCD: Exotic Hadrons and Hadronic Matter, Kyoto, Japan, 20 Nov. - 8 Dec. 200