Hadron-nucleus elastic scattering at 70, 125, and 175 GeV/c

Abstract

and Pb targets at incident beam momenta of 70 and 175 GeV/c and for n+, K +, and p scattering from Be, Al, and Pb targets at an incident beam momentum of 125 GeV/c Parametrizations of dcr/dt in the forward d~rection for the reactions are presented.

Total cross section measurements with π− , Σ− and protons on nuclei and nucleons around

“…Determinations of the slope parameters B nuc and B N in S(t) spectra showed the expected order of magnitude for all targets, and B nuc agreed quite well with data presented in [6]. Furthermore, the magnitude of B nuc is also reflected by the size of parameter α 2 in equation (10), when applying the extrapolation.…”

“…Results are shown in figure 9 and 10 together with data for π − -nucleus total cross sections from [6] and the SELEX experiment. The figures show that the calculations match our measurements quite well and agree within errors with lower-energy data from [6].…”

“…As |t| approaches zero, the growth behavior of partial cross sections is governed ideally by the elastic term in equation (6). At small |t|, hadronic coherent elastic scattering off nuclei dominates.…”

“…Information for proton-nucleus and π − -nucleus total cross sections is only provided by the references [5,6,9] and displayed together with our results in the figures 11, 7, 8, 9 and 10. No data were found for Σ − -nucleus total cross sections.…”

“…Unfortunately, the statistical errors quoted for the π − A total cross-sections are too large and miss further corrections. Therefore, we present in figure 11, 9 and 10 "normalization factors" for π − -nucleus scattering taken from [6]. These factors are based on the thesis [9], have the meaning of a total π − -nucleus cross section, but result from fits to π − -nucleus elastic scattering data, and have smaller error.…”