Mesons in the (Dymarsky-)Kuperstein- Sonnenschein holographic models
by
Matthias Ihl(Federal University of Rio de Janeiro)
→
Europe/Berlin
313
313
Description
I will first discuss some new results concerning the phenomenology of pions and vector mesons in a model of flavor chiral symmetry breaking in the Klebanov-Witten background, recently introduced by Kuperstein and Sonnenschein. I will outline the calculation of electromagnetic form factors in this model. Here, our main result is the pion form factor, which matches available experimental data surprisingly well. In the second part of the talk, I will present our results and discuss ongoing research relating to the spectra of scalar and vector mesons in the Dymarsky-Kuperstein-Sonnenschein model, which geometrically realizes flavor chiral symmetry breaking in the Klebanov-Strassler model, i.e. a non-conformal deformation of the Klebanov-Witten background. Interestingly, the lightest scalar meson, associated with fluctuations of the background gauge field, is lighter than the lightest vector meson in this model, which potentially has interesting implications for holographic nuclear physics.
