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Measurement of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">b</mml:mi></mml:math>-Quark Fragmentation Fractions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">p</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi mathvariant="italic">p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>Collisions at<mml:math xmlns:mml="http…
We have studied the production of B hadrons in 1.8-TeV p&pmacr; collisions. We present measurements of the fragmentation fractions, f(u), f(d), f(s), and f(baryon), of produced b quarks that yield B+, B0, B(0)(s), and Lambda;(0)(b) 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)) …