Measurement of the Absolute np Scattering Differential Cross Section at 194 MeV

Abstract

We describe a double-scattering experiment with a novel tagged neutron beam to measure differential cross sections for np back-scattering to better than 2% absolute precision. The measurement focuses on angles and energies where the cross section magnitude and angle-dependence constrain the charged pion-nucleon coupling constant, but existing data show serious discrepancies among themselves and with energy-dependent partial wave analyses (PWA). The present results are in good accord with the PWA, but deviate systematically from other recent measurements.

arXiv comment4 pages, 4 figures

References in corpus (5)

• pi-NN Coupling Constants from NN Elastic Data between 210 and 800 Mev
• The PSI np data and their effect on the charge Pi-N-N coupling constant
• Comment on piNN Coupling from High Precision np Charge Exchange at 162 MeV
• Normalization of neutron-proton differential cross sections
• Angle-dependent normalization of neutron-proton differential cross sections

Cited by in corpus (4)

• Precise Determination of Charge Dependent Pion-Nucleon-Nucleon Coupling Constants
• Single-Spin Observables and Orbital Structures in Hadronic Distributions
• Measurement of the Absolute Differential Cross Section for np Elastic Scattering at 194 MeV
• Neutron-proton analyzing power at 12 MeV and inconsistencies in parametrizations of nucleon-nucleon data