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Investigation of the dd -> (3)Hen pi(0) reaction with the FZ Julich WASA-at-COSY facility
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
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2013 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 88, no 1, 014004- p.Article in journal (Refereed) Published
Abstract [en]

An exclusive measurement of the dd -> (3)Hen pi(0) reaction was carried out at a beam momentum of p(d) = 1.2 GeV/c using the WASA-at-COSY facility. Information on the total cross section as well as differential distributions was obtained. The data are described by a phenomenological approach based on a combination of a quasifree model and a partial wave expansion for the three-body reaction. The total cross section is found to be sigma(tot) = ( 2.89 +/- 0.01(stat) +/- 0.06(sys) +/- 0.29(norm)) mu b. The contribution of the quasifree processes ( with the beam or target neutron being a spectator) accounts for 38% of the total cross section and dominates the differential distributions in specific regions of phase space. The remaining part of the cross section can be described by a partial wave decomposition indicating the significance of p-wave contributions in the final state.

Place, publisher, year, edition, pages
2013. Vol. 88, no 1, 014004- p.
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Natural Sciences
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URN: urn:nbn:se:uu:diva-206587DOI: 10.1103/PhysRevC.88.014004ISI: 000322113600002OAI: oai:DiVA.org:uu-206587DiVA: diva2:644736
Available from: 2013-09-02 Created: 2013-09-02 Last updated: 2017-12-06Bibliographically approved

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Adlarson, PatrikCalén, HansFransson, Kjell E. I.Gullström, Carl-OscarJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianPyszniak, AndrzejWolke, MagnusZlomanczuk, Josef

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Adlarson, PatrikCalén, HansFransson, Kjell E. I.Gullström, Carl-OscarJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianPyszniak, AndrzejWolke, MagnusZlomanczuk, Josef
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