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THE pp -> pp pi(0)pi(0) REACTION AND ITS LIMITING CASE, FUSION TO QUASI-BOUND He-2, IN SEARCH OF THE ABC EFFECT
- Skorodko, T. (author)
- Bashkanov, M. (author)
- Bogoslowsky, D. (author)
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- Clement, H. (author)
- Doroshkevich, E. (author)
- Ivanov, G. (author)
- Jiganov, E. (author)
- Khakimova, O. (author)
- Kren, F. (author)
- Kuznetsov, A. (author)
- Meier, R. (author)
- Morosov, B. (author)
- Pauly, C. (author)
- Petukhov, Y. (author)
- Povtorejko, A. (author)
- Pricking, A. (author)
- Scobel, W. (author)
- Shwartz, B. (author)
- Sopov, V. (author)
- Stepaniak, J. (author)
- Tikhomirov, V. (author)
- Turowiecki, A. (author)
- Wagner, G. J. (author)
- Yamamoto, A. (author)
- Zabierowski, J. (author)
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- (creator_code:org_t)
- 2011
- 2011
- English.
- In: International Journal of Modern Physics A. - 0217-751X .- 1793-656X. ; 26:3-4, s. 702-704
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The pi(0)pi(0) production in pp-collisions has been investigated in exclusive and kinematically complete measurements from threshold up to T-p = 1.4 GeV. For incident energies T-p > 1 GeV, i.e. in the region beyond the Roper excitation, the Delta Delta excitation process takes over. The data are well explained by the t-channel Delta Delta process dominated by pion exchange. There is no low-mass enhancement (ABC effect) in the pi(0)pi(0)-invariant mass distribution beyond that given by the conventional t-channel Delta Delta process. This is also true for the limiting case, where the protons are in the quasi-bound He-2 state.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Delta Delta excitation
- t-channel Delta Delta process
- quasibound He-2
- ABC effect
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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- International Journal of Modern Physics A (Search for host publication in LIBRIS)
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- By the author/editor
- Skorodko, T.
- Bashkanov, M.
- Bogoslowsky, D.
- Calén, Hans
- Clement, H.
- Doroshkevich, E.
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- Ekström, Curt
- Fransson, Kjell
- Gustafsson, Leif
- Höistad, Bo
- Ivanov, G.
- Jacewicz, Marek
- Jiganov, E.
- Johansson, Tord
- Keleta, S. Negas ...
- Khakimova, O.
- Koch, I.
- Kren, F.
- Kullander, Sven
- Kupsc, Andrzej
- Kuznetsov, A.
- Marciniewski, Pa ...
- Meier, R.
- Morosov, B.
- Pauly, C.
- Petterson, H.
- Petukhov, Y.
- Povtorejko, A.
- Pricking, A.
- Ruber, Roger
- Schönning, Karin
- Scobel, W.
- Shwartz, B.
- Sopov, V.
- Stepaniak, J.
- Thörngren Engblo ...
- Tikhomirov, V.
- Turowiecki, A.
- Wagner, G. J.
- Wolke, Magnus
- Yamamoto, A.
- Zabierowski, J.
- Zlomanczuk, Joze ...
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
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- By the university
- Uppsala University
- Stockholm University
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