2001/05/22 by Carlos A. Salgado, C. A. Salgado · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0370-2693(01)01162-5
published as Phys.Lett. B521 (2001) 211-216 · 15 pages, 3 postscript figures
arxiv created 2001/05/22 · openalex publication_date 2001/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
Coherence effects are important in the description of collisions with extended objects as nuclei. At fixed target energies and small x F , the coherence length of the fluctuation containing the c c ̄ is small and the usual nuclear absorption model is valid. However, at higher energies and/or x F the nucleus is seen as a whole by the fluctuation. In this case, the total, not the absorptive, c c ̄ −N cross section controls the suppression and also shadowing of gluons appears. We propose that the growth of the coherence length can explain the x F -dependence of present experimental data. For this, we need a ratio of absorptive over total c c ̄ −N cross section of 0.2.