| Title: |
Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum |
| Authors: |
TOF Collaboration; AbdEl-Samad, S.; Abdel-Bary, M.; Brinkmann, K.; Clement, H.; Dietrich, J.; Dorochkevitch, E.; Dshemuchadse, S.; Ehrhardt, K.; Erhardt, A.; Eyrich, W.; Fanara, C.; Filges, D.; Filippi, A.; Freiesleben, H.; Fritsch, M.; Gast, W.; Georgi, J.; Gillitzer, A.; Gottwald, J.; Hauffe, J.; Hesselbarth, D.; Jaeger, H.; Jakob, B.; Jaekel, R.; Karsch, L.; Kilian, K.; Koch, H.; Krapp, M.; Kress, J.; Kuhlmann, E.; Lehmann, A.; Marcello, S.; Marwinski, S.; Mauro, S.; Metzger, A.; Meyer, W.; Michel, P.; Moeller, K.; Moertel, H.; Morsch, H. P.; Naumann, L.; Paul, N.; Pinna, L.; Pizzolotto, C.; Plettner, C.; Reimann, S.; Richter, M.; Ritman, J.; Roderburg, E.; Schamlott, A.; Schoenmeier, P.; Schulte-Wissermann, M.; Schroeder, W.; Sefzick, T.; Steinke, M.; Stinzing, F.; Sun, G.; Teufel, A.; Ullrich, W.; Waechter, J.; Wagner, G. J.; Wagner, M.; Wenzel, R.; Wilms, A.; Wintz, P.; Wirth, S.; Wuestner, P.; Zupranski, P. |
| Publication Year: |
2010 |
| Collection: |
ArXiv.org (Cornell University Library) |
| Subject Terms: |
Nuclear Experiment |
| Description: |
Hyperon production in the threshold region was studied in the reaction pp -> K+Lp using the time-of-flight spectrometer COSY-TOF. Exclusive data, covering the full phase-space, were taken at the three different beam momenta of p_beam=2.95, 3.20 and 3.30 GeV/c, corresponding to excess energies of epsilon=204, 285 and 316 MeV, respectively. Total cross-sections were deduced for the three beam momenta to be 23.9+/-0.8 +/-2.0 ub, 28.4+/-1.3 +/-2.2 ub and 35.0+/-1.3 +/-3.0 ub. Differential observables including Dalitz plots were obtained. The analysis of the Dalitz plots reveals a strong influence of the N(1650)-resonance at p_beam=2.95 GeV/c, whereas for the higher momenta an increasing relative contribution of the N(1710)- and/or of the N(1720)-resonance was observed. In addition, the pL-final-state interaction turned out to have a significant influence on the Dalitz plot distribution. ; accepted for publication at Physics Letters B; some minor text changes were done; also the scale of the ordinates of figure 9 has been changed |
| Document Type: |
text |
| Language: |
unknown |
| Relation: |
http://arxiv.org/abs/1003.0603 |
| DOI: |
10.1016/j.physletb.2010.03.076 |
| Availability: |
http://arxiv.org/abs/1003.0603; https://doi.org/10.1016/j.physletb.2010.03.076 |
| Accession Number: |
edsbas.64280794 |
| Database: |
BASE |