We have studied the production of B hadrons in 1.8-TeV 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 <(Lambda)over bar(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 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.

T., A., H., A., A., A., M. G., A., P., A., S. R., A., et al. (2000). Measurement of b-quark fragmentation fractions in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 84(8), 1663-1668 [10.1103/PhysRevLett.84.1663].

Measurement of b-quark fragmentation fractions in p(p)over-bar collisions at root s=1.8 TeV

PAOLETTI, RICCARDO;TURINI, NICOLA;
2000-01-01

Abstract

We have studied the production of B hadrons in 1.8-TeV 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 <(Lambda)over bar(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 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.
2000
T., A., H., A., A., A., M. G., A., P., A., S. R., A., et al. (2000). Measurement of b-quark fragmentation fractions in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 84(8), 1663-1668 [10.1103/PhysRevLett.84.1663].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/40281
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