Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 27: Hadronic Probes III, Particle Production

HK 27.4: Vortrag

Dienstag, 17. März 1998, 15:15–15:30, C

Exclusive Measurements of Single Pion Production Processes pp → dπ⁺ and pp → pnπ⁺ at WASA/PROMICE^∗ — •A. Betsch¹, R. Bilger¹, W. Brodowski¹, H. Clement¹, M. Schepkin², G.J. Wagner¹, and M. Wisskirchen¹ — ¹Physikalisches Institut der Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen — ²ITEP Moscow — for the WASA/PROMICE Collaboration

Exclusive measurements of the single-pion production reactions pp → dπ⁺ and pp → pnπ⁺ have been performed with the WASA/PROMICE detector at CELSIUS in the energy range 350 MeV ≤ T_p ≤ 420 MeV. These reactions are very well suited for calibration and performance checks of detector and accelerator. In particular the pp → pnπ⁺ reaction provides continuum π⁺ spectra, which allow a detailed study of the detector response to pions. However, aside from these features the pnπ⁺ channel is also very interesting from the physics point of view. As we will demonstrate, the measured particle spectra manifest strong influences from Δ production and nucleon-nucleon final state interaction in the reaction process.
^∗supported by BMBF (06 TU 886), DFG (Graduiertenkolleg, Mu 705/3) and DAAD