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Charge symmetry breaking in dd -> He-4 pi(0) with WASA-at-COSY
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
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2014 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 739, 44-49 p.Article in journal (Refereed) Published
Abstract [en]

Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUMF and IUCF are currently used to develop a consistent description of CSB within the framework of chiral perturbation theory. In this work the experimental studies on the reaction dd -> He-4 pi(0) have been extended towards higher excess energies in order to provide information on the contribution of p-waves in the final state. For this, an exclusive measurement has been carried out at a beam momentum of p(d) = 1.2GeV/c using the WASA-at-COSY facility. The total cross section amounts to sigma(tot) =(118 +/- 18(stat) +/- 13(sys) +/- 8(ext)) p band first data on the differential cross section are consistent with s-wave pion production.

Place, publisher, year, edition, pages
2014. Vol. 739, 44-49 p.
Keyword [en]
Charge symmetry breaking, Deuteron-deuteron interactions, Pion production
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-241404DOI: 10.1016/j.physletb.2014.10.029ISI: 000346002000006OAI: oai:DiVA.org:uu-241404DiVA: diva2:782149
Available from: 2015-01-20 Created: 2015-01-12 Last updated: 2017-12-05Bibliographically approved

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Adlarson, PatrikCalén, HansFransson, Kjell E. I.Gullström, Carl-OscarHeijkenskjöld, LenaHöistad, BoJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianPyszniak, AndrzejWolke, MagnusZlomanczuk, Jozef

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Adlarson, PatrikCalén, HansFransson, Kjell E. I.Gullström, Carl-OscarHeijkenskjöld, LenaHöistad, BoJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianPyszniak, AndrzejWolke, MagnusZlomanczuk, Jozef
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Nuclear Physics
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Physics Letters B
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