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

Journal Article · Mon Nov 01 04:00:00 EST 1999 · Physical Review, D

OSTI ID:6033295

Blair, R E; Byrum, K L; Kovacs, E; Kuhlmann, S E; LeCompte, T; Nodulman, L ^[1]; Breccia, L; Brunetti, R; Deninno, M; Fiori, I; Mazzanti, P ^[2]; Behrends, S; Bensinger, J; Blocker, C; Kirk, M; Kirsch, L; Lamoureux, J I; Niu, H ^[3]; Bonushkin, Y; Hauser, J ; Lindgren, M ^[4]; Ashmanskas, W; Berryhill, J; Contreras, M; Culbertson, R; Grosso-Pilcher, C; Nakaya, T ^[5]; Benjamin, D; Cronin-Hennessy, D; Dittmann, J R; Goshaw, A T; Khazins, D; Kowald, W; Oh, S H ^[6]; Albrow, M G; Atac, M; Beretvas, A; Berge, J P; Biery, K; Binkley, M; Bu,

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna (Italy)
3. Brandeis University, Waltham, Massachusetts 02254 (United States)
4. University of California at Los Angeles, Los Angeles, California 90024 (United States)
5. University of Chicago, Chicago, Illinois 60637 (United States)
6. Duke University, Durham, North Carolina 27708 (United States)

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]

• OSTI ID: 6033295
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Vol. 60:9; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662340* -- Hadron Interactions-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
QUARKONIUM
QUARKS
SEMILEPTONIC DECAY
STRANGE MESONS
STRANGE PARTICLES
STRANGEONIUM
VECTOR MESONS
WEAK PARTICLE DECAY