This title appears in the Scientific Report :
2007
Please use the identifier:
http://hdl.handle.net/2128/10506 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.physletb.2007.08.041 in citations.
Is there an Eta 3 He quasi-bound state?
Is there an Eta 3 He quasi-bound state?
The observed variation of the total cross section for the dp -> He-3 eta reaction near threshold means that the magnitude of the s-wave amplitude falls very rapidly with the eta centre-of-mass momentum. It is shown here that recent measurements of the momentum dependence of the angular distributi...
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Personal Name(s): | Wilkin, C. |
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Büscher, M. / Chiladze, D. / Dymov, S. / Hanhart, C. / Hartmann, M. / Hejny, V. / Kacharava, A. / Keshelashvili, I. / Khoukaz, A. / Maeda, Y. / Mersmann, T. / Mielke, M. / Mikirtychiants, S. / Papenbrock, M. / Rathmann, F. / Rausmann, T. / Schleichert, R. / Ströher, H. / Täschner, A. / Valdau, Yu. / Wronska, A. | |
Contributing Institute: |
Experimentelle Hadrondynamik; IKP-2 Institut 3 (Theoretische Kernphysik); IKP-3 |
Published in: | Physics letters / B, 654 (2007) S. 92 - 96 |
Imprint: |
Amsterdam
North-Holland Publ.
2007
|
Physical Description: |
92 - 96 |
DOI: |
10.1016/j.physletb.2007.08.041 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Physics Letters B
654 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.physletb.2007.08.041 in citations.
The observed variation of the total cross section for the dp -> He-3 eta reaction near threshold means that the magnitude of the s-wave amplitude falls very rapidly with the eta centre-of-mass momentum. It is shown here that recent measurements of the momentum dependence of the angular distribution imply a strong variation also in the phase of this amplitude. Such a behaviour is that expected from a quasi-bound or virtual eta He-3 state. The interpretation can be investigated further through measurements of the deuteron or proton analysing powers and/or spin-correlations. (C) 2007 Elsevier B.V. All rights reserved. |