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Neutron-Proton Scattering Experiments at ANKE-COSY

Kacharava, A; Chiladze, D; Chiladze, B; Keshelashvili, I; Lomidze, N; Macharashvili, G; Mchedlishvili, D; ... Wilkin, C; + view all (2009) Neutron-Proton Scattering Experiments at ANKE-COSY. In: Eplelbaum, E and Hammer, HW and Meibner, UG, (eds.) 19TH INTERNATIONAL IUPAP CONFERENCE ON FEW-BODY PROBLEMS IN PHYSICS. E D P SCIENCES Green open access

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Abstract

The nucleon-nucleon interaction (NN) is fundamental for the whole of nuclear physics and hence to the composition of matter as we know it. It has been demonstrated that stored, polarised beams and polarised internal targets are experimental tools of choice to probe spin effects in NN-scattering experiments. While the EDDA experiment has dramatically improved the proton-proton date base, information on spin observables in neutron-proton scattering is very incomplete above 800MeV, resulting in large uncertainties in isoscalar np phase shifts. Experiments at COSY, using a polarised deuteron beam or target, can lead to significant improvements in the situation through the study of quasi-free reactions on the neutron in the deuteron. Such a measurements has already been started at ANKE by using polarised deuterons on an unpolarised target to study the dp -> {pp}n deuteron charge-exchange reaction and the full program with a polarised storage cell target just has been conducted. At low excitation energies of the final pp system, the spin observables are directly related to the spin-dependent parts of the neutron-proton charge-exchange amplitudes. Our measurement of the deuteron-proton spin correlations will allow us to determine the relative phases of these amplitudes in addition to their overall magnitudes.

Type: Proceedings paper
Title: Neutron-Proton Scattering Experiments at ANKE-COSY
Event: 19th International IUPAP Conference on Few-Body Problems in Physics
Location: Bonn, GERMANY
Dates: 2009-08-31 - 2009-09-05
ISBN-13: 978-2-7598-0521-1
Open access status: An open access version is available from UCL Discovery
DOI: 10.1051/epjconf/20100305004
Publisher version: http://dx.doi.org/10.1051/epjconf/20100305004
Language: English
Additional information: This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial License 3.0, which permits unrestricted use, distribution, and reproduction in any noncommercial medium, provided the original work is properly cited.
Keywords: DEUTERON ANALYZING POWERS, INTERMEDIATE ENERGIES, CHARGE-EXCHANGE, ELASTIC-SCATTERING, TENSOR, POLARIZATION, EXCITATION, PHYSICS, VECTOR
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1309735
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