Cookies

We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Durham University

Research & business

View Profile

Publication details for Alan Martin

Khoze, 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.

Author(s) from Durham

Abstract

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.