Details

Autor(en) / Beteiligte

• Abd El-Samad, S.
• Bilger, R.
• Böhm, A.
• Brinkmann, K.-Th
• Clement, H.
• Dshemuchadse, S.
• Eyrich, W.
• Erhardt, A.
• Fanara, C.
• Filippi, A.
• Freiesleben, H.
• Fritsch, M.
• Geyer, R.
• Hauffe, J.
• Hassan, A.
• Herrmann, P.
• Hesselbarth, D.
• Jakob, B.
• Kilian, K.
• Koch, H.
• Kress, J.
• Kuhlmann, E.
• Marcello, S.
• Marwinski, S.
• Metzger, A.
• Michel, P.
• Möller, K.
• Morsch, H.P.
• Naumann, L.
• Roderburg, E.
• Schamlott, A.
• Schönmeier, P.
• Schulte-Wissermann, M.
• Schroeder, W.
• Steinke, M.
• Stinzing, F.
• Sun, G.Y.
• Wächter, J.
• Wagner, G.J.
• Wagner, M.
• Wilms, A.
• Wirth, S.
• Zielinski, U.

Titel

Hyperon production in the channel pp→K+Λp near the reaction threshold

Ist Teil von

• Physics letters. B, 2006-01, Vol.632 (1), p.27-34

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2006

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Hyperon production in the threshold region was studied in the reaction pp→K+Λp using the time-of-flight spectrometer COSY-TOF. Exclusive data, covering the full phase-space, were taken at three different beam momenta pbeam=2.59, 2.68 and 2.85 GeV/c (corresponding to excess energies of ɛ=85, 115 and 171 MeV). Total cross-sections were deduced to be 7.4±0.5 μb, 8.6±0.6 μb and 16.5±0.4 μb, respectively. Differential observables including Dalitz plots were obtained. From the investigation of the Dalitz plot at pbeam=2.85 GeV/c a dominant contribution of the N∗(1650)-resonance to the reaction mechanism was found. In addition the pΛ-final-state interaction turned out to have a significant influence on the Dalitz plot distribution even 171 MeV above threshold.