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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Two-pion production in proton-proton collisions with a polarized beam
European Physical Journal A, Volume 37, No. 3, Article 267, Year 2008
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Description
The two-pion production reaction pp → ppπ+π - was measured with a polarized proton beam at T p ≈ 750 and 800MeV using the short version of the COSY-TOF spectrometer. The implementation of a delayed-pulse technique for Quirl and central calorimeter provided positive π+ identification in addition to the standard particle identification, energy determination as well as time-of-flight and angle measurements. Thus all four-momenta of the emerging particles could be determined with 1-4 overconstraints. Total and differential cross-sections as well as angular distributions of the vector analyzing power have been obtained. They are compared to previous data and theoretical calculations. In contrast to predictions we find significant analyzing-power values up to A y = 0.3. The data taken in the energy region of the excitation of the Roper resonance confirm that its dominant ππ decay channel is N * → Nσ. © 2008 SIF, Springer-Verlag Berlin Heidelberg.
Authors & Co-Authors
El-Bary, S. Abd
Egypt, Cairo
Egyptian Atomic Energy Authority
El-Samad, S. Abd
Egypt, Cairo
Egyptian Atomic Energy Authority
Bilger, R.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Brinkmann, Kai Th
Germany, Bonn
Universität Bonn
Clement, Heinz A.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Dietrich, M.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Doroshkevich, E. A.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Dshemuchadse, S.
Germany, Dresden
Technische Universität Dresden
Germany, Dresden
Hzdr - Helmholtz-zentrum Dresden-rossendorf
Ehrhardt, K.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Erhardt, A.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Eyrich, Wolfgang K.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Filippi, Alessandra
Italy, Turin
Università Degli Studi Di Torino
Freiesleben, Hartwig
Germany, Dresden
Technische Universität Dresden
Fritsch, Miriam
Germany, Bochum
Ruhr-universitat Bochum
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Geyer, Reiner
Germany, Julich
Forschungszentrum Jülich Gmbh
Gillitzer, Albrecht
Germany, Julich
Forschungszentrum Jülich Gmbh
Hanhart, Christoph
Germany, Julich
Forschungszentrum Jülich Gmbh
Hauffe, J.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Haug, K.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Hesselbarth, D.
Germany, Julich
Forschungszentrum Jülich Gmbh
Jaekel, R.
Germany, Dresden
Technische Universität Dresden
Jakob, B.
Germany, Dresden
Technische Universität Dresden
Karsch, Leonhardt
Germany, Dresden
Technische Universität Dresden
Kilian, Kurt
Germany, Julich
Forschungszentrum Jülich Gmbh
Koch, Helmut Rüdiger
Germany, Bochum
Ruhr-universitat Bochum
Kreß, J.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Kuhlmann, Eberhard
Germany, Dresden
Technische Universität Dresden
Marcello, Simonetta
Italy, Turin
Università Degli Studi Di Torino
Marwinski, S.
Germany, Julich
Forschungszentrum Jülich Gmbh
Meier, Rudolf
Germany, Tubingen
Eberhard Karls Universität Tübingen
Móller, Karsten
Germany, Dresden
Hzdr - Helmholtz-zentrum Dresden-rossendorf
Morsch, Hans Peter
Germany, Julich
Forschungszentrum Jülich Gmbh
Naumann, Lothar
Germany, Dresden
Hzdr - Helmholtz-zentrum Dresden-rossendorf
Ritman, James L.
Germany, Julich
Forschungszentrum Jülich Gmbh
Roderburg, E.
Germany, Julich
Forschungszentrum Jülich Gmbh
Schönmeier, Peter
Germany, Dresden
Technische Universität Dresden
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Schulte-Wissermann, M.
Germany, Dresden
Technische Universität Dresden
Schroeder, Walter Heinz
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Steinke, Matthias
Germany, Bochum
Ruhr-universitat Bochum
Stinzing, Friedrich
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Sun, G. Y.
Germany, Dresden
Technische Universität Dresden
Wächter, J.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Wagner, Gerhard J.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Wagner, Milan N.
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Weidlich, U.
Germany, Tubingen
Eberhard Karls Universität Tübingen
Wilms, Andrea
Germany, Bochum
Ruhr-universitat Bochum
Wintz, Peter
Egypt, Cairo
Egyptian Atomic Energy Authority
Wirth, St
Germany, Erlangen
Friedrich-alexander-universität Erlangen-nürnberg
Zhang, G.
Germany, Tubingen
Eberhard Karls Universität Tübingen
China, Beijing
Peking University
Żuprański, Pawel
Poland, Warsaw
Instytut Problemów Jądrowyc
Statistics
Citations: 50
Authors: 50
Affiliations: 11
Identifiers
Doi:
10.1140/epja/i2008-10637-y
ISSN:
14346001