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https://www.ias.ac.in/article/fulltext/pram/057/02-03/0399-0416

GEM; COSY; meson production

Total and differential cross sections for the reactions p + d → ³He + m⁰ with m=π, η and p + d → ³H+π⁺ were measured with the GEM detector at COSY for beam momenta between threshold and the maximum of the corresponding baryon resonance. For both reactions a strong forward-backward asymmetry was found. The data were compared with model calculations. The aspect of isospin symmetry breaking is studied.

H Machner¹ M Betigeri² J Bojowald¹ A Budzanowski³ A Chatterjee² J Ernst⁴ L Freindl³ D Frekers⁵ W Garske⁵ K Grewer⁵ A Hamacher¹ J Ilieva^{1 6} L Jarczyk⁶ K Kilian¹ S Kliczewski³ W Klimala^{1 6} D Kolev⁷ T Kutsarova⁶ J Lieb⁸ H Machner¹ A Magiera⁶ H Nann^{1 9} L Pentchev¹⁰ HS Plendl¹¹ D Protić¹ B Razen^{1 4} P Von Rossen¹ BJ Roy² R Siudak³ J Smyrski⁶ RV Srikantiah² A Strzałkowski⁶ R Tsenov⁷ K Zwoll¹²

1. Institut für Kernphysik, Forschungszentrum Jülich, Jülich - 52425, Germany
2. Nuclear Physics Division, BARC, Bombay, India
3. Institute of Nuclear Physics, Krakow, Poland
4. Institut für Strahlen- und Kernphysik der Universität Bonn, Bonn, Germany
5. Institut für Kernphysik, Universität Münster, Münster, Germany
6. Institute of Physics, Jagellonian University, Krakow, Poland
7. Physics Faculty, University of Sofia, Sofia, Bulgaria
8. Physics Department, George Mason University, Fairfax, Virginia, USA
9. UCF, Bloomington, Indiana, USA
10. Institute of Nuclear Physics and Nuclear Energy, Sofia, Bulgaria
11. Physics Department, Florida State University, Tallahassee, Florida, USA
12. Zentrallabor für Elektronik, Forschungszentrum Jülich, Jülich, Germany

Published

9 August 2001