Differential cross sections measurement for the pp→dπ+ reaction at 850MeV/c
M.G. Betigeri. Nuclear Physics Division , BARC , Bombay , IndiaJ. Bojowald. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyA. Budzanowski. Institute of Nuclear Physics , Krakow , PolandA. Chatterjee. Nuclear Physics Division , BARC , Bombay , IndiaJ. Ernst. Institut für Strahlen-und Kernphysik der Universität Bonn , Bonn , GermanyL. FreindlKrakow Cardiovascular Research InstituteD. Frekers. Institut für Kernphysik , Universität Münster , Münster , GermanyW. Garske. Institut für Kernphysik , Universität Münster , Münster , GermanyK. Grewer. Institut für Kernphysik , Universität Münster , Münster , GermanyA. Hamacher. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyJ. Ilieva. Institute of Nuclear Physics and Nuclear Energy , Sofia , BulgariaL. Jarczyk. Institute of Physics , Jagellonian University , Krakow , PolandK. Kilian. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyS. Kliczewski. Institute of Nuclear Physics, Krakow, PolandW. Klimala. Institute of Physics , Jagellonian University , Krakow , PolandD. Kolev. Physics Faculty , University of Sofia , Sofia , BulgariaT. Kutsarova. Institute of Nuclear Physics and Nuclear Energy , Sofia , BulgariaJ. Lieb. Physics Department , George Mason University , Fairfax , Virginia , USAH. Machner. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyA. Magiera. Institute of Physics , Jagellonian University , Krakow , PolandH. Nann. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyL. Pentchev. Institute of Nuclear Physics and Nuclear Energy , Sofia , BulgariaD. Protić. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyB. Razen. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyP. von Rossen. Institut für Kernphysik , Forschungszentrum Jülich , Jülich , GermanyB. J. Roy. Nuclear Physics Division , BARC , Bombay , IndiaR. SiudakKrakow Cardiovascular Research InstituteA. Strzałkowski. Institute of Physics, Jagellonian University, Krakow, PolandR. Tsenov. Physics Faculty , University of Sofia , Sofia , BulgariaK. Zwoll. Zentrallabor für Elektronik , Forschungszentrum Jülich , Jülich , Germany
2001lv
ABI
Аннотация
A stack of annular detectors made of high purity germanium and a magnet spectrograph were used to measure $p\stackrel{\ensuremath{\rightarrow}}{p}d{\ensuremath{\pi}}^{+}$ differential cross sections at a beam momentum of $850\mathrm{MeV}/c$ over a large angular range. A total cross section of $\ensuremath{\sigma}=0.2301\ifmmode\pm\else\textpm\fi{}0.0036(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.0230(\mathrm{syst})$ mb and an anisotropy ${A}_{2}{/A}_{0}=0.856\ifmmode\pm\else\textpm\fi{}0.016$ were deduced. These values follow fits to low energy data. From the present ${A}_{2}$ value it is found that the pionic p-wave amplitude ${a}_{0}$ is larger than assumed so far.
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