Measurement of b quark fragmentation fractions in the production of strange and light B mesons in p(p)over-bar collisions at root s=1.8 TeV - art. no. 092005
F. Abe et al., Measurement of b quark fragmentation fractions in the production of strange and light B mesons in p(p)over-bar collisions at root s=1.8 TeV - art. no. 092005, PHYS REV D, 6009(9), 1999, pp. 2005
A new technique to measure the ratio of b quark fragmentation fractions in
<p(p)over bar> collisions is described. Using a 70-pb(-1) sample of low-mas
s dimuon trigger data recorded with the Collider Detector at Fermilab, we i
dentify B mesons by observing the double semileptonic decays b-->c mu X wit
h c-->s mu X. By counting the numbers of K*(892)(0), K*(892)(+), and phi(10
20) mesons produced in association with these muon pairs, we measure the ra
tio of strange to nonstrange B meson production to be f(s)/(f(u)+f(d)) = [2
1.0+/-3.6(stat)(-3.0)(+3.8)(syst)]%. This measurement is the most precise a
vailable from hadron collisions to date. Limits on the branching fractions
of semileptonic charm meson decays with K-1(1270), K-1*(1410), and K-2*(143
0) mesons in the final state are also obtained. [S0556-2821(99)00119-8].