Measurement of b Quark Fragmentation Fractions in p-pbar Collisions at sqrt(s)=1.8 TeV
Abstract
We have studied the production of B hadrons in 1.8-TeV p-pbar collisions. We present measurements of the fragmentation fractions, fu, fd, fs and fbaryon, of produced b quarks that yield B+, B0, B0s and Lambdab hadrons. Reconstruction of several electron-charm final states yields fs/(fu+fd)=0.213+/-0.068 and fbaryon/(fu+fd)=0.118+/-0.042, assuming fu=fd. If all B hadrons produced in p-pbar collisions cascade to one of these four hadrons, we determine fu=fd=0.375+/-0.023, fs=0.160+/-0.044 and fbaryon=0.090+/-0.029. If we do not assume fu=fd, we find fd/fu=0.84+/-0.16.
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