% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{AbdElSamad:139102, author = {Abd El-Samad, S. and Borodina, E. and Brinkmann, K. -Th. and Clement, H. and Doroshkevich, E. and Dzhygadlo, R. and Ehrhardt, K. and Erhardt, A. and Eyrich, W. and Freiesleben, H. and Gast, W. and Gillitzer, A. and Grzonka, D. and Hanhart, C. and Hauenstein, F. and Klaja, P. and Kilian, K. and Krapp, M. and Ritman, J. and Roderburg, E. and Röder, M. and Schulte-Wissermann, M. and Schroeder, W. and Sefzick, T. and Wagner, G. J. and Wintz, P. and Wüstner, P.}, title = {{O}n the Σ{N} cusp in the pp → p{K}+Λ reaction}, journal = {The European physical journal / A}, volume = {49}, number = {3}, issn = {1434-601X}, address = {Berlin}, publisher = {Springer}, reportid = {FZJ-2013-05110}, pages = {41}, year = {2013}, abstract = {Measurements of the pp → pK (+) Λ reaction at T ( )p( ) = 2.28 GeV have been carried out at COSY-TOF. In addition to the Λp FSI and N (*) resonance excitation effects a pronounced narrow structure is observed in the Dalitz plot and in its projection on the pΛ invariant mass. The strongly asymmetric structure appears at the pp → NK (+) Σ threshold and is interpreted as the ΣN cusp effect. The observed width of about 20 MeV/c (2) is substantially broader than anticipated from previous measurements as well as theoretical predictions. Angular distributions of this cusp structure are shown to be dissimilar to those in the residual pK (+) Λ channel, but similar to those observed in the pK (+) Σ (0) channel. PDF = http://www.springerlink.com/}, keywords = {p Lambda: final-state interaction (INSPIRE) / angular distribution (INSPIRE) / nucleon resonance (INSPIRE) / nucleon Sigma: cusp effect (INSPIRE) / Dalitz plot (INSPIRE) / asymmetry (INSPIRE) / COSY-TOF (INSPIRE) / p p: exclusive reaction (INSPIRE) / Lambda: hadroproduction (INSPIRE) / K+: associated production (INSPIRE) / channel cross section: measured (INSPIRE) / experimental results (INSPIRE) / Juelich COSY PS (INSPIRE) / p p --> Lambda p K+ (INSPIRE) / 2.28 GeV-kin (INSPIRE)}, cin = {IKP-1 / ZEA-2 / IAS-4}, ddc = {530}, cid = {I:(DE-Juel1)IKP-1-20111104 / I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)IAS-4-20090406}, pnm = {531 - Hadron Structure and Dynamics (HSD) (POF2-531)}, pid = {G:(DE-HGF)POF2-531}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000317855000013}, doi = {10.1140/epja/i2013-13041-8}, url = {https://juser.fz-juelich.de/record/139102}, }