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The European Physical Journal C
ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)
Abstract Volume 5 Issue 1 (1998) pp 57-61
DOI 10.1007/s100529800926
experimental physics:
Direct reconstruction of isosinglet amplitudes for nucleon-nucleon elastic scattering
J. Ball (1), R. Binz (2), J. Bystrický (3), L.G. Greeniaus (4) (a), R. Hess (4), Z. Janout (5)(6), B. Khachaturov (5), C. Lechanoine-LeLuc (4), F. Lehar (3)(4), A. de Lesquen (3), A. Prokofiev (7), D. Rapin (4)
(1) DAPNIA/SPhN, CEA/Saclay, F-91191 Gif-sur-Yvette Cedex, France
(2) Faculty of Physics, Freiburg University, D-7800 Freiburg im Br., Germany
(3) DAPNIA/SPP, CEA/Saclay, F-91191 Gif-sur-Yvette Cedex, France
(4) DPNC, Université de Genève, 24 quai Ernest Ansermet, CH-1211 Genève 4, Switzerland
(5) LNP - JINR, 141980 Dubna, Moscow Region, Russia
(6) Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Brehová 7, 11519 Prague 1, Czech Republic
(7) Petersburg Nuclear Physics Institute, 188350, Gatchina, Russia
Received: 4 February 1998 / Published online: 13 July 1998
Abstract. The direct reconstruction of the isospin I = 0 amplitudes is discussed under the assumption that the I = 1 amplitudes are known and that a sufficient number of independent np observables have been measured at a centre-of-mass angle $\theta $. We show that at least one observable measured at angle $\pi - \theta $ is necessary in order to determine the I = 0 amplitudes, including the phase relative to the I = 1 amplitudes. Special cases at $\theta = 0$, $\pi/2$ and $\pi$ are also discussed.
(a) On leave from the Centre for Subatomic Research, University of Alberta, Edmonton, Alberta, T6G 2N5 Canada
Article in PDF-Format (179 KB)
Article in (gzipped) PS-Format (120 KB)
Online publication: August 4, 1998
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