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arXiv · 0711.0221

Deep inelastic scattering from gauge string duality in the soft wall model

C. A. Ballon Bayona·Henrique Boschi-Filho·Nelson R. F. Braga
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Abstract

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.

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C. A. Ballon Bayona, Henrique Boschi-Filho, Nelson R. F. Braga. 2008-03-24. Deep inelastic scattering from gauge string duality in the soft wall model. https://doi.org/10.1088/1126-6708%2F2008%2F03%2F064

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