Diffraction dissociation of neutrons into (pπ−) on protons in the momentum range 35 to 65 GeV/c

Total π+p cross section extracted from the leading neutron spectra at the LHC

“…Finally, a factor 2=3 comes from the isotopic spin factor Brðp à → nπ þ Þ=Brðp à → pπ 0 Þ ¼ 2. Note that the resulting cross section σðN à → nπ þ Þ ≃ 0.33 mb is in agreement with the lowerenergy data [39] (σ ∼ 0.3 mb) assuming that the flat energy dependence continues up to LHC energies. (2017) 034018-7 Figure 5 compares the values of σ tot ðπpÞ extracted from the LHCf data with two predictions based on extrapolations of fits to lower-energy hadron-hadron cross sections, shown by the lower two curves labelled DL [35] and COMPETE [40].…”