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The ppppπππ reaction channels in the threshold region
Institut für Experimentalphysik der Universität Hamburg.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics.
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2007 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 649, no 2-3, 122-127 p.Article in journal (Refereed) Published
Abstract [en]

The cross section for direct neutral and charged three pion production in pp interactions was measured at excess energies in the range 160–216 MeV. That comprises the first measurement of the ppppπ0π0π0 reaction and the direct comparison with the ppppπ+ππ0 process. The experiment was performed above the η meson production threshold and the cross section could be directly normalized to the cross section of the ppppη reaction, with the η decaying into 3 pions. Since the same final states are selected, the measurement has a low systematical error. The measured cross section ratio σ(ppppπ+ππ0)/σ(ppppπ0π0π0) is compared to predictions of dominance of different isobars in the intermediate state.

Place, publisher, year, edition, pages
2007. Vol. 649, no 2-3, 122-127 p.
Keyword [en]
Threshold measurement, Three pion production, Final state interaction
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-16830DOI: 10.1016/j.physletb.2007.04.004ISI: 000247170700003OAI: oai:DiVA.org:uu-16830DiVA: diva2:44601
Available from: 2008-06-16 Created: 2008-06-16 Last updated: 2017-12-08Bibliographically approved

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Jacewicz, MarekCalén, HansFransson, KjellGustafsson, LeifHöistad, BoJohansson, TordKeleta, SamsonKullander, SvenKupsc, AndrzejMarciniewski, PawelPettersson, HenrikSchönning, KarinThörngren Engblom, PiaZlomanczuk, Jozef

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Jacewicz, MarekCalén, HansFransson, KjellGustafsson, LeifHöistad, BoJohansson, TordKeleta, SamsonKullander, SvenKupsc, AndrzejMarciniewski, PawelPettersson, HenrikSchönning, KarinThörngren Engblom, PiaZlomanczuk, Jozef
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Department of Nuclear and Particle PhysicsThe Svedberg Laboratory
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Physics Letters B
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