Measurement of b-Quark Fragmentation Fractions in pp¯ Collisions at s=1.8TeV

T. Affolder et al. (CDF Collaboration)
Phys. Rev. Lett. 84, 1663 – Published 21 February 2000
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Abstract

We have studied the production of B hadrons in 1.8-TeV pp¯ collisions. We present measurements of the fragmentation fractions, fu, fd, fs, and fbaryon, of produced b quarks that yield B+, B0, Bs0, and Λ¯b0 hadrons. Reconstruction of five 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 pp¯ 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.

  • Received 21 September 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.1663

©2000 American Physical Society

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Vol. 84, Iss. 8 — 21 February 2000

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