/ Experiment-Nucl arXiv:0910.0995


Exclusive Measurements of pp ---> dpi+ pi0: Double-Pionic Fusion without ABC Effect


Kren, F. ; Bashkanov, M. ; Bogoslawsky, D. ; Calen, H. ; Clement, H. ; Demiroers, L. ; Ekstrom, C. ; Fransson, K. ; Greiff, J. ; Gustafsson, L. ; Hoistad, B. ; Ivanov, G. ; Jacewicz, M. ; Jiganov, E. ; Johansson, T. ; Khakimova, O. ; Keleta, S. ; Koch, I. ; Kullander, S. ; Kupsc, A. ; Marciniewski, P. ; Meier, R. ; Morosov, B. ; Pauly, C. ; Petren, H. ; Petukhov, Y. ; Povtorejko, A. ; Ruber, R.J.M.Y. ; Schonning, K. ; Scobel, W. ; Skorodko, T. ; Shwartz, B. ; Stepaniak, J. ; Thorngren-Engblom, P. ; Tikhomirov, V. ; Wagner, G.J. ; Wolke, M. ; Yamamoto, A. ; Zabierowski, J. ; Zlomanczuk, J.

Published in: Phys.Lett.
Year: 2010
Vol.: B684
Page No: 110-113
Pages: 6

Abstract: Exclusive measurements of the reaction pp -> dpi+pi0 have been carried out at T_p = 1.1 GeV at the CELSIUS storage ring using the WASA detector. The isovector pi+pi0 channel exhibits no enhancement at low invariant pipi masses, i. e. no ABC effect. The differential distributions are in agreement with the conventional t-channel Delta-Delta excitation process, which also accounts for the observed energy dependence of the total cross section.

Web-Page: http://durpdg.dur.ac.uk/cgi-hepdata/hepreac/8422966; http://inspirebeta.net/record/833116/files/DDel.png; http://inspirebeta.net/record/833116/files/MdpiMdpidata.png; http://inspirebeta.net/record/833116/files/MdpiMdpiph.png; http://inspirebeta.net/record/833116/files/MdpiMpipidata2.png; http://inspirebeta.net/record/833116/files/MdpiMpipiph2.png; http://inspirebeta.net/record/833116/files/dEFRH4vsdEFRH3MC.png; http://inspirebeta.net/record/833116/files/dEFRH4vsdEFRH3data.png; http://inspirebeta.net/record/833116/files/dpi0invmass_dpipi_1100.png; http://inspirebeta.net/record/833116/files/dpiplinvmass_dpipi_1100.png; http://inspirebeta.net/record/833116/files/dthetacm_dpipi_1100.png; http://inspirebeta.net/record/833116/files/papgruen.png; http://inspirebeta.net/record/833116/files/pi0thetacm_dpipi_1100.png; http://inspirebeta.net/record/833116/files/pipiopening_dpipi_1100.png; http://inspirebeta.net/record/833116/files/piplpi0invmass_dpipi_1100.png

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