J. Salt et al., A METHOD FOR THE MEASUREMENT OF INCLUSIVE SEMILEPTONIC B-DECAYS BY DOUBLE HEMISPHERE TAGGING AT LEP-ENERGIES (DELPHI), Nuclear physics. B, 1996, pp. 59-62
The aim of this paper is to describe a new measurement method which pe
rmits to obtain the spectra of lepton variables like p, p(t), cos thet
a for different lepton sources using a minimum of Monte Carlo inputs.
Our method is based on an efficient tagging algorithm by hemispheres w
hich has been applied in Gamma(<b(b)over bar>), determination. Moreove
r, b semileptonic branching ratio is evaluated almost independently of
modelling.