Publication details for Alan MartinKhoze, V. A., Martin, A. D. & Ryskin, M. G. (2017). Total π + p cross section extracted from the leading neutron spectra at the LHC. Physical Review D 96(3): 034018.
- Publication type: Journal Article
- ISSN/ISBN: 2470-0010 (print), 2470-0029 (electronic)
- DOI: 10.1103/PhysRevD.96.034018
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
We use the very forward neutron energy spectra measured by the LHC forward experiment at 7 TeV
to extract the πþp total cross section at center-of-mass energies in the range 2.3–3.5 TeV. To do this, we
have to first isolate the π-exchange pole in forward neutron production in pp collisions, by evaluating other
possible contributions, namely, those from ρ and a2 exchange, from both eikonal and enhanced screening
effects, from migration, from neutron production by Δ-isobar decay and from diffractive nucleon
excitations. We discuss the possible theoretical uncertainties due to the fact that the data do not exactly
reach the π pole. We choose the kinematical domain where the pion contribution dominates and
demonstrate the role of the different corrections which could affect the final result.