Experimental determination of the complete spin structure for ... GeV/c

Paschke, K. D.; Franklin, G. B.; Bradtke, R. O.; Goertz, S.; Gehring, R.; Meyer, W.; Bröders, R.; Tayloe, R.; Stinzing, F.; Bassaleck, B.; Schoch, B.; Kilian, K.; Metzger, A.; Quinn, B.; Kriegler, E.; Dennert, H.; Schmitt, H.; Johansson, T.; Heinsius, F. H.; Reicherz, G.; Oelert, W.; Hertzog, D.; Wirth, St.; Stotzer, R.; Bunker, B.; Sefzick, T.; Fields, D. E.; Dutz, H.; Geyer, R.; Radtke, E.; Eyrich, W.; Lowe, J.; Kingsberry, P.; Jones, T.; Meier, A.; Harmsen, J.; Moosburger, M.; Eilerts, S.; Hauffe, J.; Sachs, K.; Pomp, S.; Plückthun, M.; Khaustov, P.; Franz, J.; Berdoz, A.; Meyer, C. A.; Fischer, H.; Röhrich, K.

doi:10.1103/PhysRevC.74.015206

Journal Article

Experimental determination of the complete spin structure for ... GeV/c

Paschke, K. D. ; Quinn, B. ; Berdoz, A. ; Franklin, G. B. ; Khaustov, P. ; Meyer, C. A. ; Bradtke, R. O. ; Gehring, R. ; Goertz, S. ; Harmsen, J. ; Meier, A. ; Meyer, W. ; Radtke, E. ; Reicherz, G. ; Dutz, H. ; Plückthun, M. ; Schoch, B. ; Dennert, H. ; Eyrich, W. ; Hauffe, J. ; Metzger, A. ; Moosburger, M. ; Stinzing, F. ; Wirth, S. ; Fischer, H. ; Franz, J. ; Heinsius, F. H. ; Kriegler, E. ; Schmitt, H. ; Bunker, B. ; Hertzog, D. ; Jones, T. ; Tayloe, R. ; Bröders, R.FZJ* ; Geyer, R.FZJ* ; Kilian, K.FZJ* ; Oelert, W.FZJ* ; Röhrich, K.FZJ* ; Sachs, K.FZJ* ; Sefzick, T.FZJ* ; Bassaleck, B. ; Eilerts, S. ; Fields, D. E. ; Kingsberry, P. ; Lowe, J. ; Stotzer, R. ; Johansson, T. ; Pomp, S.

2006
Inst. Woodbury, NY

Physical review / C 74(1), 015206 (2006) [10.1103/PhysRevC.74.015206]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10567 doi:10.1103/PhysRevC.74.015206

Abstract: The reaction (p) over barp -> (Lambda) over bar Lambda -> (p) over bar pi(+)p pi(-) has been measured with high statistics at a beam momentum of p((p) over bar)=1.637GeV/c. The use of a transversely polarized frozen-spin target combined with the self-analyzing property of Lambda/(Lambda) over bar decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of 11 real parameters for each bin of scattering angle; each of these parameters is determined with reasonable precision. From these results, all conceivable spin correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in (p) over barp ->(Lambda) over bar Lambda near this energy. Existing theoretical models do not give good predictions for those spin observables that had not been previously measured.

Keyword(s): anti-p p: annihilation ; polarized target: transverse ; Lambda: pair production ; Lambda: hadronic decay ; angular distribution ; Lambda: polarization ; spin: density matrix ; spin: correlation ; experimental results ; CERN LEAR ; p anti-p --> Lambda Antilambda ; Lambda --> p pi- ; 1.637 GeV/c