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The pd -> He-3 eta pi(0) reaction at T-p=1450 MeV CELSIUS/WASA Collaboration
Stockholm University, Faculty of Science, Department of Physics.
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2010 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 685, no 1, 33-37 p.Article in journal (Refereed) Published
Abstract [en]

The cross section for the pd -> He-3 eta pi(0) reaction has been measured at a beam energy of 1450 MeV using the WASA detector at the CELSIUS storage ring. The He-3 was detected in coincidence with four photons from the decays of the two mesons. The data indicate that the production mechanism involves the formation of the Delta(1232) isobar. Although the beam energy does not allow the full peak of this resonance to be seen, the invariant mass distributions Of all three pairs of final particles are well reproduced by a phase space Monte Carlo simulation weighted with the p-wave factor of the square of the pi(0) momentum in the He-3 pi(0) system.

Place, publisher, year, edition, pages
2010. Vol. 685, no 1, 33-37 p.
Keyword [en]
eta, pi(0) meson production, invariant-mass distribution, Delta resonance
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-48932DOI: 10.1016/j.physletb.2010.01.042ISI: 000275148600006OAI: diva2:376257

authorCount :47

Available from: 2010-12-10 Created: 2010-12-10 Last updated: 2013-01-14Bibliographically approved

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Gerén, LindaTegnér, Per-ErikEngblom, Pia Thörngren
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Department of Physics
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