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pi(0)pi(0) Production in proton-proton collisions at T-p=1.4 GeV The WASA-at-COSY Collaboration
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
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2012 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 706, no 4-5, 256-262 p.Article in journal (Refereed) Published
Abstract [en]

The reaction pp -> pp pi(0)pi(0) has been investigated at a beam energy of 1.4 GeV using the WASA-at-COSY facility. The total cross section is found to be (324 +/- 21(systematic) +/- 58(normalization)) mu b. In order to study the production mechanism, differential kinematic distributions have been evaluated. The differential distributions indicate that both initial state protons are excited into intermediate Delta(1232) resonances, each decaying into a proton and a single pion, thereby producing the pion pair in the final state. No significant contribution of the Roper resonance N*(1440) via its decay into a proton and two pions is found.

Place, publisher, year, edition, pages
2012. Vol. 706, no 4-5, 256-262 p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-169367DOI: 10.1016/j.physletb.2011.11.041ISI: 000299756800004OAI: oai:DiVA.org:uu-169367DiVA: diva2:506645
Available from: 2012-02-29 Created: 2012-02-28 Last updated: 2017-12-07Bibliographically approved

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Adlarson, PatrikGullström, Carl-OskarHeijkenskjöld, LenaHöistad, BoJacewicz, MarekJohansson, TordKupsc, AndrzejMarciniewski, PawelPlucinski, PawelRedmer, Christoph F.Wolke, MagnusZlomanczuk, Jozef

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Adlarson, PatrikGullström, Carl-OskarHeijkenskjöld, LenaHöistad, BoJacewicz, MarekJohansson, TordKupsc, AndrzejMarciniewski, PawelPlucinski, PawelRedmer, Christoph F.Wolke, MagnusZlomanczuk, Jozef
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Nuclear Physics
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