2006/12/05 by J. R. Cudell, J. -R. Cudell, O. V. Selyugin · 21 citations
Mathematics · Physics and Astronomy · #Amplitude #Black Holes and Theoretical Physics #Diffraction #High-Energy Particle Collisions Research #Large Hadron Collider #Limit (mathematics) #Mathematical analysis #Mathematics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Pomeron #Quantum chromodynamics #Quantum mechanics #Scattering #Scattering amplitude #Tevatron #hep-ph
paper · pdf · doi:10.1016/j.physletb.2008.03.033
published in Physics Letters B 662(5), 417-423 (Elsevier BV) · 15 pages, 12 figures, latex
arxiv created 2006/12/05 · openalex publication_date 2008/03/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Recent models of soft diffraction include a hard pomeron pole besides the usual soft term. Such models violate the black-disk limit around Tevatron energies, so that they need to be supplemented by a unitarisation scheme. Two standard schemes are considered in this Letter, and we show that they lead to an uncertainty at the LHC much larger than previously estimated. We also examine the signature of unitarisation on various small-t observables, the slope in t of the elastic cross section, or the ratio of the real to imaginary parts of the scattering amplitude, and show that the existence of a unitarised hard pomeron in soft scattering may be confirmed by LHC data.