A Measurement Of Asymmetry In The Decay Lambda-C+-]Lambda-Pi+

H Albrecht,H Ehrlichmann,T Hamacher,A Kruger,A Nau,A Nippe,M Reidenbach,M Schafer,H Schroder,H Schulz,F Sefkow,R Wurth,R D Appuhn,C Hast,G Herrera, H Kolanoski,Alex J Lange,A Lindner, R Mankel,M Schieber,T Siegmund,B Spaan,H Thurn,D Topfer,A Walther,D Wegener,M Paulini,K Reim,U Volland,H Wegener,R Mundt,W Schmidtparzefall,W Funk,J Stiewe,S Werner,S Ball,J C Gabriel,C Geyer, A H Holscher,W Hofmann,B Holzer, S A Khan,K T Knopfle,J Spengler,D Britton,C E K Charlesworth,K W Edwards,H Kapitza,P Krieger,R Kutschke,D B Macfarlane,R S Orr,P M Patel,J D Prentice,S Seidel, G Tsipolitis,K Tzamariudaki,R G Van De Water,T S Yoon, D Resing,S Schael,K R Schubert,K Strahl,R Waldi,S Weseler,B Bostjancic,G Kernel,P Križan, E Križnic,T Podobnik,T živko,H I Cronstrom,L Jonsson,V Balagura,M Danilov,A Droutskoy,B Fominykh,A Golutvin,I Gorelov, F Ratnikov, V Lubinov,P Pakhlov,A Rostovtsev,A Semenov, S Semenov,V Shevchenko,V Soloshenko,I Tichomirov,Yu Zaitsev,R Childers,C W Darden

PHYSICS LETTERS B（1992）

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摘要

Using the ARGUS detector at the e+ e- storage ring DORIS II at DESY, we have observed parity violation in the decay LAMBDA(c) +/---> LAMBDA-pi +/-. We measure the coefficient of parity violation, alpha(LAMBDA-c), to be -0.96 +/- 0.42. In addition, we measure sigma-BR (LAMBDA(c)+ --> LAMBDA-pi+) and sigma-BR (LAMBDA(c)+ --> SIGMA-0-pi+) to be, respectively, (2.2 +/- 0.3 +/- 0.4) pb and (2.0 +/- 0.7 +/- 0.4) pb.

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