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Measurement of b-quark fragmentation fractions in p&pmacr; collisions at sqrt | | N Turini
; F Ukegawa
; J Valls
; S Vejcik
; G Velev
; R Vidal
; R Vilar
; I Vologouev
; D Vucinic
; R G Wagner
; R L Wagner
; J Wahl
; N B Wallace
; A M Walsh
; C Wang
; C H Wang
; M J Wang
; T Watanabe
; T Watts
; R Webb
; H Wenzel
; W C Wester
; A B Wicklund
; E Wicklund
; H H Williams
; P Wilson
; | | Date: |
21 Feb 2000 | | Journal: | Phys Rev Lett, 84 (8), 1663-8 | | Abstract: | 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)) = 0.118+/-0.042, assuming f(u) = f(d). If all B hadrons produced in p&pmacr; 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. | | Source: | PubMed, pmid11017595 | | Services: | Forum | Review | Favorites | |
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