2001/10/02 by Romuald A. Janik, R. A. Janik, R. Peschanski · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th
paper · pdf · doi:10.1016/s0550-3213(02)00004-4
published as Nucl.Phys.B625:279-294,2002 · 11 pages, 1 eps figure
arxiv created 2001/10/02 · openalex publication_date 2002/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using the AdS/CFT correspondence in a confining backgroundand the worldline formalism of gauge field theories,we compute scattering amplitudes with an exchange of quark andantiquark in the t-channel corresponding to Reggeon exchange. Itrequires going beyond the eikonal approximation, which was used when studying Pomeron exchange. The wordline path integral is evaluated through the determination of minimal surfaces and their boundaries by the saddle-point method at large gauge coupling g2Nc. We find a Regge behaviour with linear Regge trajectories. The slope is related to the q q static potential and is four times the Pomeronslope obtained in the same framework. A contribution to the intercept, related to the Lüscher term, comes from the fluctuations around the minimal surface.