Jun 13 – 17, 2011
Künstlerhaus
Europe/Berlin timezone
Proceedings are now available online at <a href="http://www.slac.stanford.edu/econf/C110613/">eConf</a>

Mesons and baryons in holographic soft-wall model

Jun 14, 2011, 5:30 PM
20m
Club 1 (Künstlerhaus)

Club 1

Künstlerhaus

talk Light Baryons Light Baryons

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)

Presentation materials