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ISSN - 05874254, Acta Physica Polonica, Series B., 1998, vol. 29, p. 2987-2991

Two-pion production in proton-proton collisions near threshold at CELSIUS

Bilger R., Brodowski W., Calen H., Clement H., Dyring J., Ekström C., Fransson K., Greiff J., Gustafsson L., Häggström S., Höistad B., Johanson J., Johansson A., Johansson T., Khoukaz A., Kilian K., Koch I., Kullander S., Kupsc A., Marciniewski P., Morosov B., Mörtsell A., Oelert W., Ruber R., Schubert U., Shwartz B., Stepaniak J., Sukhanov A., Sundberg P., Turowiecki A., Wagner G., Wilhelmi Z., Zabierowski J., Zernov A., Zlomanczuk J.

Two-pion production reactions in proton-proton collisions near threshold are measured using an internal cluster-jet hydrogen target and the WASA/PROMICE detector at the CELSIUS storage ring. Four out of the five possible two-pion production reactions are measured simultaneously.