Title of article
η-helium quasi-bound states
Author/Authors
N. Willis، نويسنده , , Y. Le Bornec، نويسنده , , A. Zghiche، نويسنده , , C. Wilkin، نويسنده , , R. Wurzinger، نويسنده , , O. Bing، نويسنده , , C. M. Boivin، نويسنده , , P. Courtat، نويسنده , , R. Gacougnolle، نويسنده , , F. Hibou، نويسنده , , J.M. Martin، نويسنده , , P. F. Plouin، نويسنده , , B. Tatischeff، نويسنده , , J. Yonnet، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
6
From page
14
To page
19
Abstract
The cross section and tensor analysing power t20 of the dd → 4Heη reaction have been measured at six c.m. momenta, 10 ⩽ pη ⩽ 90 MeV/c. The threshold value of t20 is consistent with 12, which follows from parity conservation and Bose symmetry. The much slower momentum variation observed for the reaction amplitude, as compared to that for the analogous pd → 3Heη case, strongly suggests the existence of a quasi-bound state in the η4He system and simple optical model fits tentatively indicate that this might also be the case for η3He.
Journal title
PHYSICS LETTERS B
Serial Year
1997
Journal title
PHYSICS LETTERS B
Record number
908531
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