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Isotensor Dibaryon in the pp -> pp pi(+)pi(-) Reaction?
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
Natl Ctr Nucl Res, Div Nucl Phys, Ulica Hoza 69, PL-00681 Warsaw, Poland.
Jagiellonian Univ, Inst Phys, Ulica Prof Stanislawa Lojasiewicza 11, PL-30348 Krakow, Poland.
Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
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2018 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 121, no 5, article id 052001Article in journal (Refereed) Published
Abstract [en]

Exclusive measurements of the quasifree pp -> pp pi(+)pi(-) reaction have been carried out at WASA@ COSY by means of pd collisions at T-p = 1.2 GeV. Total and differential cross sections have been extracted covering the energy region T-p = 1.08-1.36 GeV, which is the region of N* (1440) and Delta(123)Delta(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange are at variance with the measured differential cross sections and underpredict substantially the experimental total cross section. An isotensor Delta N dibaryon resonance with I(J(P)) = 2(1(+)) produced associatedly with a pion is able to overcome these deficiencies.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 121, no 5, article id 052001
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-362841DOI: 10.1103/PhysRevLett.121.052001ISI: 000440415600003PubMedID: 30118290OAI: oai:DiVA.org:uu-362841DiVA, id: diva2:1255855
Funder
German Research Foundation (DFG), CL 214/3-2Available from: 2018-10-15 Created: 2018-10-15 Last updated: 2018-10-15Bibliographically approved

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Adlarson, PatrikCalén, HansFransson, KjellHeijkenskjöld, LenaJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianWolke, MagnusZlomanczuk, Jozef

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Adlarson, PatrikCalén, HansFransson, KjellHeijkenskjöld, LenaJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianWolke, MagnusZlomanczuk, Jozef
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