Speaker
Dr
Valery Lyubovitskij
(Institute of Theoretical Physics, Tuebingen University)
Description
Mesons and baryons are considered in a soft-wall holographic approach [1,2] based on the correspondence of string theory in AdS space and conformal field theory in physical space-time [3]. Our approach is also based on ideas of the light-front holography approach developed by Brodsky and de Teramond [4]. The model generates Regge trajectories linear in n and J(L) for the hadronic mass spectrum. Results obtained for heavy-light meson masses and decay constants are consistent with predictions of HQET. The role of the dilaton field in a soft-wall holographic approach for mesons and baryons is discussed. In the baryon sector we present application to the nucleon electromagnetic form factors and the generalized parton distributions [2].
[1] A. Vega, I. Schmidt, T. Branz, T. Gutsche, V. E. Lyubovitskij,
Phys. Rev. D80, 055014 (2009);
T. Branz, T. Gutsche, V. E. Lyubovitskij, I. Schmidt, A. Vega,
Phys. Rev. D82, 074022 (2010);
T. Gutsche, V. E. Lyubovitskij, I. Schmidt, A. Vega, in preparation.
[2] A. Vega, I. Schmidt, T. Gutsche, V. E. Lyubovitskij,
Phys. Rev. D83, 036001 (2011).
[3] J. M. Maldacena, Adv. Theor. Math. Phys. 2, 231 (1998);
S. S. Gubser, I. R. Klebanov, A. M. Polyakov,
Phys. Lett. B428, 105 (1998);
E. Witten, Adv. Theor. Math. Phys. 2, 253 (1998).
[4] S. J. Brodsky, G. F. de Teramond,
Phys. Lett. B582, 211 (2004); Phys. Rev. D77, 056007 (2008);
Phys. Rev. Lett. 102, 081601 (2009).
Primary author
Dr
Valery Lyubovitskij
(Institute of Theoretical Physics, Tuebingen University)
Co-authors
Dr
Alfredo Vega
(Departamento de Fisica, Universidad Tecnica Federico Santa Maria, Valparaiso, Chile)
Prof.
Ivan Schmidt
(Departamento de Fisica, Universidad Tecnica Federico Santa Maria, Valparaiso, Chile)
Prof.
Thomas Gutsche
(Institute of Theoretical Physics, Tuebingen University, Germany)
