Measurement of the branching ratio and an upper limit on

D. Buskulic, D. Casper, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J.-P. Lees, M.-N. Minard, P. Odier, B. Pietrzyk, F. Ariztizabal, M. Chmeissani (+405 others)
1995 Physics Letters B  
Using 1.45 million hadronic Z decays collected by the ALEPH experiment a t LEP, the b ! X branching ratio is measured to be 2:75 0:30 0:37%. In addition an upper limit of 1:8 10 3 at 90% condence level is placed upon the exclusive branching ratio of B ! . These measurements are consistent with SM expectations, and put the constraint tan =M H < 0.52 GeV 1 at 90% condence level on all Ty p e I I t w o Higgs doublet models (such as the MSSM).
doi:10.1016/0370-2693(94)01584-y fatcat:i32ran4r5bcz5efq7bf6zmhjjy