2007/11/30 by C. A. Ballon Bayona, C.A. Ballon Bayona, Henrique Boschi-Filho +2 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th
paper · pdf · doi:10.1088/1126-6708/2008/03/064
published as JHEP0803:064,2008 · V3: Results unchanged. We clarified the differences between the soft and hard wall models regarding the calculation of structure functions in DIS. We included a calculation of elastic form factors. We explained in more detail the hybrid model proposed for fermions. Version accepted for publication in JHEP. 20 pages, 1 Latex figure
arxiv created 2008/03/24 · openalex publication_date 2008/03/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Deep inelastic structure functions have been calculated by Polchinski and Strassler in gauge/string duality introducing a hard infrared (IR) cut off in AdS space. Here we investigate this problem using a soft IR cut off that leads to linear Regge trajectories for mesons. We calculate the structure functions for scalar particles in the large x regime where supergravity approximation holds and the small x regime where massive string states contribute. We also propose a hybrid model to calculate structure functions for fermions in the supergravity approximation. In the deep inelastic limit our results are in agreement with those obtained using a hard cut off.