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

abstract

  • We have studied the production of B hadrons in 1.8-TeV pp[over ¯] collisions. We present measurements of the fragmentation fractions, f_{u}, f_{d}, f_{s}, and f_{baryon}, of produced b quarks that yield B^{+}, B^{0}, B_{s}^{0}, and Λ[over ¯]_{b}^{0} hadrons. Reconstruction of five electron-charm final states yields f_{s}/( f_{u}+f_{d})=0.213±0.068 and f_{baryon}/( f_{u}+f_{d})=0.118±0.042, assuming f_{u}=f_{d}. If all B hadrons produced in pp[over ¯] collisions cascade to one of these four hadrons, we determine f_{u}=f_{d}=0.375±0.023, f_{s}=0.160±0.044, and f_{baryon}=0.090±0.029. If we do not assume f_{u}=f_{d}, we find f_{d}/f_{u}=0.84±0.16.

author list (cited authors)

  • Affolder, T., Akimoto, H., Akopian, A., Albrow, M. G., Amaral, P., Amendolia, S. R., ... Zucchelli, S.

citation count

  • 25

publication date

  • February 2000

keywords

  • (cdf Collaboration)