Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8182695 | Nuclear Physics A | 2018 | 11 Pages |
Abstract
The ISR and the 7 TeV LHC data indicate that the differential cross-section of elastic proton-proton scattering remains almost energy-independent at the transferred momentum tââ0.21GeV2 at the level of â7.5â mb/GeV2. This property of dÏ/dt (the “first” stationary point) appears due to the correlated growth of the total cross-section and the local slope parameter and can be expressed as a relation between the latter quantities. We anticipate that this property will be true up to 13 TeV. This enables us to normalize the preliminary TOTEM data for dÏ/dt at 13âTeV and 0.05<|t|<3.4GeV2 and predict the values of dÏ/dt at this energy. These data give an evidence of the second stationary point at tââ2.3GeV2 at the level of â33â nb/GeV2. The energy evolution of dÏ/dt looks as if the high energy elastic scattering amplitude is a sum of two similar terms. We argue that the existence of the two stationary points and the two-component structure of the high energy elastic scattering amplitude are general properties for all elastic processes.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A.P. Samokhin, V.A. Petrov,