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Exclusive measurements of pd -> He-3 pi pi : The ABC effect revisited

Bashkanov, M. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Bogoslawsky, D. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Calén, Hans (author)
Uppsala universitet,The Svedberg-laboratoriet
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Cappellaro, F. (author)
Uppsala universitet,Kärnfysik
Clement, H. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Demiroers, L. (author)
Hamburg University, Hamburg, Germany
Ekström, Curt (author)
Uppsala universitet,The Svedberg-laboratoriet
Fransson, Kjell (author)
Uppsala universitet,The Svedberg-laboratoriet
Greiff, J. (author)
Uppsala universitet,The Svedberg-laboratoriet
Gustafsson, Leif (author)
Uppsala universitet,Kärnfysik
Höistad, Bo (author)
Uppsala universitet,Kärnfysik
Ivanov, G. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Jacewicz, Marek (author)
Uppsala universitet,Kärnfysik
Jiganov, E. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Johansson, Tord (author)
Uppsala universitet,Kärnfysik
Khakimova, O. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Kaskulov, M. M. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Keleta, Samson (author)
Uppsala universitet,Kärnfysik
Koch, I. (author)
Uppsala universitet,Kärnfysik
Kren, F. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Kullander, Sven (author)
Uppsala universitet,Kärnfysik
Kupsc, Andrzej (author)
Uppsala universitet,The Svedberg-laboratoriet
Kuznetsov, A. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Marciniewski, Pawel (author)
Uppsala universitet,The Svedberg-laboratoriet
Meier, R. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Morosov, B. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Oelert, W. (author)
Forschungszentrum Jülich, Germany
Pauly, C. (author)
Hamburg University, Hamburg, Germany
Petukho, Y. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Povtorejko, A. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Ruber, Roger (author)
Uppsala universitet,The Svedberg-laboratoriet
Scobel, W. (author)
Hamburg University, Hamburg, Germany
Skorodko, T. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Shwartz, B. (author)
Budker Institute of Nuclear Physics, Novosibirsk, Russia
Sopov, V. (author)
Institute of Theoretical and Experimental Physics, Moscow, Russia
Stepaniak, J. (author)
Soltan Institute of Nuclear Studies, Warsaw and Lodz, Poland
Tchernyshev, V. (author)
Institute of Theoretical and Experimental Physics, Moscow, Russia
Thorngren-Engblom, Pia (author)
Uppsala universitet,Kärnfysik
Tikhomirov, V. (author)
Joint Institute for Nuclear Research, Dubna, Russia
Turowiecki, A. (author)
Institute of Experimental Physics, Warsaw, Poland
Wagner, G. J. (author)
Physikalisches Institut der Universität Tübingen, D-72076 Tübingen, Germany
Wolke, Magnus (author)
Uppsala universitet,Kärnfysik
Yamamoto, A. (author)
High Energy Accelerator Research Organization, Tsukuba, Japan
Zabierowski, J. (author)
Soltan Institute of Nuclear Studies, Warsaw and Lodz, Poland
Zlomanczuk, Jozef (author)
Uppsala universitet,Kärnfysik
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 (creator_code:org_t)
Elsevier BV, 2006
2006
English.
In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 637:4-5, s. 223-228
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Exclusive measurements of the reactions pd -> He-3 pi(+)7 pi(-) and pd -> He-3 pi(0)pi(0) have been carried out at T-p = 0.893 GeV at the CELSIUS storage ring using the WASA detector. The pi(+)pi(-) channel evidences a pronounced enhancement at low invariant pi pi masses-as anticipated from previous inclusive measurements of the ABC effect. This enhancement is seen to be even much larger in the isoscalar pi(0)pi(0) channel. The differential distributions prove this enhancement to be of scalar-isoscalar nature. Delta Delta calculations give a good description of the data, if a boundstate condition is imposed for the intermediate Delta Delta system.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

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