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 00:00:00 EST 1999 · Physical Review, D

OSTI ID:698907

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; Buckley-Geer, E; Byon-Wagner, A; Chlebana, F; Cihangir, S; Cooper, J; DeJongh, F; Demina, R; Derwent, P F; Elias, J E; Erdmann, W; Flaugher, B; Foster, G W; Freeman, J; Geer, S; Hahn, S R; Harris, R M; Incandela, J; Jensen, H; Joshi, U; Kennedy, R D; Kephart, R; Lammel, S; Lewis, J D; Lukens, P; Maeshima, K; Marriner, J P; Miao, T; Mukherjee, A; Nelson, C; Newman-Holmes, C ^[7]; Klimenko, S; Konigsberg, J; Korytov, A; Nomerotski, A ^[8]; Barone, M; Bertolucci, S; Cordelli, M; DellAgnello, S; Giromini, P; Happacher, F; Miscetti, S ^[9]; Clark, A G; Couyoumtzelis, C; Kambara, H ^[10]; Baumann, T; Burkett, K; Franklin, M; Gordon, A; Hamilton, R; Huth, J; others, and

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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)
7. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
8. University of Florida, Gainesville, Florida 32611 (United States)
9. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)
10. University of Geneva, CH-1211 Geneva 4 (Switzerland)

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: 698907
• Journal Information: Physical Review, D, Vol. 60, Issue 9; Other Information: PBD: Nov 1999
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B QUARKS
B MESONS
PROTON-ANTIPROTON INTERACTIONS
FERMILAB COLLIDER DETECTOR
SEMILEPTONIC DECAY
MUONS
KAONS
PHI-1020 MESONS
BRANCHING RATIO
STRANGE MESONS