Measurement of [ital b] quark fragmentation fractions in the production of strange and light [ital B] mesons in p[bar p] collisions at [radical] (s) =1. 8 TeV

• Published in: Physical review. D, Particles and fields Particles and fields, 1999-11, Vol.60:9
• Main Authors: Blair, R.E., Byrum, K.L., Kovacs, E., Kuhlmann, S.E., LeCompte, T., Nodulman, L., Breccia, L., Brunetti, R., Deninno, M., Fiori, I., Mazzanti, P., Behrends, S., Bensinger, J., Blocker, C., Kirk, M., Kirsch, L., Lamoureux, J.I., Niu, H., Bonushkin, Y., Hauser, J., Lindgren, M., Ashmanskas, W., Berryhill, J., Contreras, M., Culbertson, R., Grosso-Pilcher, C., Nakaya, T., Benjamin, D., Cronin-Hennessy, D., Dittmann, J.R., Goshaw, A.T., Khazins, D., Kowald, W., Oh, S.H., Albrow, M.G., Atac, M., Beretvas, A., Berge, J.P., Biery, K., Binkley, M., Bu
• Format: Article
• Language: English
• Subjects: 662440 > Properties of Other Particles Including Hypothetical Particles-- (1992-); B MESONS; B QUARKS; BARYON-BARYON INTERACTIONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; BRANCHING RATIO; DECAY; ELEMENTARY PARTICLES; FERMILAB COLLIDER DETECTOR; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; KAONS; LEPTONS; MESONS; MUONS; NUCLEON-ANTINUCLEON INTERACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PHI-1020 MESONS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PROTON-ANTIPROTON INTERACTIONS; PSEUDOSCALAR MESONS; QUARKONIUM; QUARKS; SEMILEPTONIC DECAY; STRANGE MESONS; STRANGE PARTICLES; STRANGEONIUM; VECTOR MESONS; WEAK PARTICLE DECAY 662340 > Hadron Interactions-- (1992-)
• ISSN: 0556-2821; 1089-4918

A new technique to measure the ratio of [ital b] quark fragmentation fractions in p[bar p] collisions is described. Using a 70-pb[sup [minus]1] sample of low-mass dimuon trigger data recorded with the Collider Detector at Fermilab, we identify [ital B] mesons by observing the double semileptonic decays b[r arrow]c[mu]X with c[r arrow]s[mu]X. By counting the numbers of K[sup [asterisk]](892)[sup 0], K[sup [asterisk]](892)[sup +], and [phi](1020) mesons produced in association with these muon pairs, we measure the ratio of strange to nonstrange [ital B] meson production to be f[sub s]/(f[sub u]+f[sub d])=[21.0[plus minus]3.6(stat)[sub [minus]3.0][sup +3.8](syst)][percent]. This measurement is the most precise available from hadron collisions to date. Limits on the branching fractions of semileptonic charm meson decays with K[sub 1](1270), K[sub 1][sup [asterisk]](1410), and K[sub 2][sup [asterisk]](1430) mesons in the final state are also obtained. [copyright] [ital 1999] [ital The American Physical Society]