Search for three-nucleon force effects in analyzing powers for (p)over-right-arrowd elastic scattering

Citation
K. Ermisch et al., Search for three-nucleon force effects in analyzing powers for (p)over-right-arrowd elastic scattering, PHYS REV L, 86(26), 2001, pp. 5862-5865
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
86
Issue
26
Year of publication
2001
Pages
5862 - 5865
Database
ISI
SICI code
0031-9007(20010625)86:26<5862:SFTFEI>2.0.ZU;2-8
Abstract
A series of measurements have been performed at KVI to obtain the vector an alyzing power Ay Of the H-2((p) over right arrow, pd) reaction as a functio n of incident beam energy at energies of 120, 135, 150, and 170 MeV. For al l these measurements, a range of upsilon (c.m) from 30 degrees to 170 degre es has been covered. The purpose of these investigations is to observe poss ible spin-dependent effects beyond two-nucleon forces. When compared to the ,predictions of Faddeev calculations, based on two-nucleon forces only, sig nificant deviations are observed at all energies and at center-of-mass angl es between 70 degrees and 130 degrees. The addition of present-day three-nu cleon forces does not improve the description of the data, demonstrating th e still insufficient understanding of the properties of three-nucleon syste ms.