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- Skorodko, T. (author)
ISOSPIN DECOMPOSITION OF pp -> NN pi pi CROSS SECTIONS : DO WE SEE A SIGN OF Delta(1600) EXCITATION IN THE nn pi(+)pi(+) CHANNEL?
- Article/chapterEnglish2009
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- 2009
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- LIBRIS-ID:oai:DiVA.org:uu-149121
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-149121URI
- https://doi.org/10.1142/S0217751X09043821DOI
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- Language:English
- Summary in:English
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- The two-pion production in pp-collisions has been investigated in exclusive measurements from threshold up to T-p = 1.36 GeV. Total and differential cross sections have been obtained for the channels pn pi(+) pi(0), pp pi(+) pi(-), pp pi(0)pi(0) and also nn pi(+)pi(+). For intermediate incident energies T-p > 1 GeV, i.e. in the region, which is beyond the Roper excitation but at the onset of Delta Delta excitation the total pp pi(0)pi(0) cross section falls behind theoretical predictions by as much as an order of magnitude near 1.2 GeV, whereas the nn pi(+)pi(+) cross section is a factor of five larger than predicted. A model-unconstrained isospin decompostion of the cross section points to a significant contribution of an isospin 3/2 resonance other than the Delta(1232). As a possible candidate the Delta(1600) is discussed.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- Isospin decomposition
- poper resonance
- Delta Delta excitation
- Delta (1600) excitation
- Physics
- Fysik
Added entries (persons, corporate bodies, meetings, titles ...)
- Bashkanov, M. (author)
- Bogoslowsky, D. (author)
- Calén, HansUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)hanscale (author)
- Clement, H. (author)
- Ekström, CurtUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)cek03918 (author)
- Fransson, KjellUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)kjelfran (author)
- Gustafsson, LeifUppsala universitet,Institutionen för fysik och astronomi (author)
- Höistad, BoUppsala universitet,Institutionen för fysik och astronomi (author)
- Ivanov, G. (author)
- Jacewicz, MarekUppsala universitet,Institutionen för fysik och astronomi (author)
- Jiganov, E. (author)
- Johansson, TordUppsala universitet,Institutionen för fysik och astronomi (author)
- Keleta, SamsonUppsala universitet,Institutionen för fysik och astronomi (author)
- Khakimova, O. (author)
- Koch, InkenUppsala universitet,Institutionen för fysik och astronomi (author)
- Kren, F. (author)
- Kullander, SvenUppsala universitet,Institutionen för fysik och astronomi (author)
- Kupsc, AndrzejUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)andrkups (author)
- Kuznetsov, A. (author)
- Marciniewski, PawelUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)pawemarc (author)
- Meier, R. (author)
- Morosov, B. (author)
- Pauly, C. (author)
- Petterson, HenrikUppsala universitet,The Svedberg-laboratoriet (author)
- Petukhov, Y. (author)
- Povtorejko, A. (author)
- Ruber, Roger J. M. Y.Uppsala universitet,The Svedberg-laboratoriet(Swepub:uu)rru19847 (author)
- Schönning, KarinUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)kasch734 (author)
- Scobel, W. (author)
- Shwartz, B. (author)
- Sopov, V. (author)
- Stepaniak, J. (author)
- Thörngren-Engblom, PiaUppsala universitet,The Svedberg-laboratoriet(Swepub:uu)pth13060 (author)
- Tikhomirov, V. (author)
- Turowiecki, A. (author)
- Wagner, G. J. (author)
- Wolke, M. (author)
- Yamamoto, A. (author)
- Zabierowski, J. (author)
- Zlomanczuk, JozefUppsala universitet,Institutionen för fysik och astronomi (author)
- Uppsala universitetThe Svedberg-laboratoriet (creator_code:org_t)
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- In:International Journal of Modern Physics A24:2-3, s. 450-4530217-751X1793-656X
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- Gustafsson, Leif
- Höistad, Bo
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