A precise measurement of the real part of the elastic scattering amplitude at the Sp̄pS

Abstract

A precise measurement of p̄p elastic scattering in the Coulomb-strong interaction interference region was performed at the CERN Sp̄pS Collider at a centre-of-mass energy of 541 GeV. The ratio of the real to the imaginary part of the forward elastic scattering amplitude was found to be ρ = 0.135 ± 0.015. The slope of the exponential fall off of the strong interaction part was also measured to be b = 15.5 ± 0.1 GeV−2

On the coherence between high-energy total cross-section data when compared with general principles

“…GeV [12], while the upper band is, in fact, the lower bound on the increase of UT be to the allowed experimental increase of UT between \/E == 62.3 GeV [14] and \/E = 541 range 0.5 3 7 5 2.5 is explicitely exhibited. In these figures the lower band corresponds TeV [8,10].…”

Comparison of different non-linear equations and corresponding unitarization schemes

“…For example, the AKM (Auberson-Kinoshita-Martin) [1] theorem leads to possible oscillation at very small t in the elastic differential cross sections. Such oscillations may have already been discovered in the UA4/2 experiment [2,3]. In the impact parameter representation, a more complicated picture appears.…”

Proton--proton and proton--antiproton differential elastic cross sections modeling at high and ultra-high energies using a hybrid computing paradigm

“…The high energy P P and P P elastic scattering have been measured experimentally at different colliders over a wide range of √ s , such as "Intersecting Storage Rings (ISR)" and "Super Proton Synchrotron (SPS)" colliders at the "European Council for Nuclear Research (CERN)" [12][13][14][15][16][17][18][19][20], as well as the "Fermilab" fixed target experiments and Tevatron colliders [21][22][23][24][25][26][27][28][29]. Recently, the measurements of the high energy P P and P P elastic scattering have been working at the Large Hadron Collider "LHC" by the "TOTEM" (TOTal cross section, Elastic scattering and diffraction dissociation Measurement) at the LHC Collaboration [30][31][32][33][34][35].…”