Measurement of bb quark fragmentation fractions in the production of strange and light BB mesons in ppˉp\bar{p} collisions at s=1.8\sqrt{s}=1.8 TeV

Collaboration
1999
14 pages
Published in:
  • Phys.Rev.D 60 (1999) 092005
Report number:
  • FERMILAB-PUB-99-413-CD
Experiments:

Citations per year

199920052011201720230123456
Abstract: (APS)
A new technique to measure the ratio of b quark fragmentation fractions in pp¯ collisions is described. Using a 70−pb−1 sample of low-mass dimuon trigger data recorded with the Collider Detector at Fermilab, we identify B mesons by observing the double semileptonic decays b→cμX with c→sμX. By counting the numbers of K*(892)0, K*(892)+, and φ(1020) mesons produced in association with these muon pairs, we measure the ratio of strange to nonstrange B meson production to be fs/(fu+fd)=[21.0±3.6(stat)−3.0+3.8(syst)]%. This measurement is the most precise available from hadron collisions to date. Limits on the branching fractions of semileptonic charm meson decays with K1(1270), K1*(1410), and K2*(1430) mesons in the final state are also obtained.
  • anti-p p: colliding beams
  • B: hadroproduction
  • B: semileptonic decay
  • B: cascade decay
  • muon: pair production
  • K*(892): associated production
  • Phi(1020): associated production
  • bottom
  • quark: fragmentation
  • charmed meson: semileptonic decay