Search For Rare B-Decays

H Albrecht,T Hamacher,R P Hofmann, T Kirchhoff, R Mankel,A Nau,S Nowak, D Resing,H Schroder,H Schulz,M Walter,R Wurth,C Hast,H Kapitza,H Kolanoski,A Kosche, A E Lange,A Lindner,M Schieber, T Siegmund,B Spaan,H Thurn,D Topfer,D Wegener,P Eckstein,C Frankl,J Graf,M Schmidtler,Matthias Schramm,K R Schubert, R Schwierz,R Waldi,K Reim,H Wegener,R Eckmann,H Kuipers,O Mai,R Mundt,T Oest,R Reiner,W Schmidtparzefall,J Stiewe,S Werner,K Ehret,W Hofmann,A Hupper,K T Knopfle,J Spengler,P Krieger,D B Macfarlane,J D Prentice,P R B Saull,K Tzamariudaki,R G Van De Water,T S Yoon,M Schneider,S Weseler,G Kernel,P Križan, E Križnic,T Podobnik,T živko,V Balagura,S Barsuk,I Belyaev,R Chistov,M Danilov, L I Gershtein,Yu Gershtein, A Golutyin,I Korolko,G Kostina,D O Litvintsev,P Pakhlov, S Semenov,A Snizhko,I Tichomirov,Yu Zaitsev

PHYSICS LETTERS B（1995）

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摘要

Using the ARGUS detector at the e(+)e(-) storage ring DORIS II at DESY, we have searched for decays b --> s gluon through full reconstruction of a whole event. Two B ($) over bar B decays were found with one of B meson decaying into a final state without charmed particles. We also obtained an upper limit for Br(B+ --> tau(+)v(tau)) of 1.04% at 90% CL.

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particle physics

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