Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs.
We analyze 9.7x10(6) B_B pairs recorded with the CLEO detector to determine the production ratio of charged to neutral B-meson pairs produced at the Upsilon(4S) resonance. We measure the rates for B0-->J/psiK((*)0) and B+-->J/psiK((*)+) decays and use the world-average B-meson lifetime...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2001
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| _version_ | 1797058277879578624 |
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| author | Alexander, J Baker, R Bebek, C Berger, B Berkelman, K Blanc, F Boisvert, V Cassel, D Dickson, M Drell, P Ecklund, K Ehrlich, R Foland, A Gaidarev, P Gibbons, L Gittelman, B Gray, S Hartill, D Heltsley, B Hopman, P Jones, C Kreinick, D Lohner, M Magerkurth, A Meyer, T |
| author_facet | Alexander, J Baker, R Bebek, C Berger, B Berkelman, K Blanc, F Boisvert, V Cassel, D Dickson, M Drell, P Ecklund, K Ehrlich, R Foland, A Gaidarev, P Gibbons, L Gittelman, B Gray, S Hartill, D Heltsley, B Hopman, P Jones, C Kreinick, D Lohner, M Magerkurth, A Meyer, T |
| author_sort | Alexander, J |
| collection | OXFORD |
| description | We analyze 9.7x10(6) B_B pairs recorded with the CLEO detector to determine the production ratio of charged to neutral B-meson pairs produced at the Upsilon(4S) resonance. We measure the rates for B0-->J/psiK((*)0) and B+-->J/psiK((*)+) decays and use the world-average B-meson lifetime ratio to extract the relative widths f(+-) / f(00) = gamma(Upsilon(4S)-->B+B-) / gamma(Upsilon(4S)-->B0 B-0)) = 1.04+/-0.07(stat)+/-0.04(syst). With the assumption that f(+-)+f(00) = 1, we obtain f(00) = 0.49+/-0.02(stat)+/-0.01(syst) and f(+-) = 0.51+/-0.02(stat)+/-0.01(syst). This production ratio and its uncertainty apply to all exclusive B-meson branching fractions measured at the Upsilon(4S) resonance. |
| first_indexed | 2024-03-06T19:48:11Z |
| format | Journal article |
| id | oxford-uuid:231070d4-d57c-4f98-ae7f-eaf2e5345bc7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:48:11Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:231070d4-d57c-4f98-ae7f-eaf2e5345bc72022-03-26T11:42:14ZMeasurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:231070d4-d57c-4f98-ae7f-eaf2e5345bc7EnglishSymplectic Elements at Oxford2001Alexander, JBaker, RBebek, CBerger, BBerkelman, KBlanc, FBoisvert, VCassel, DDickson, MDrell, PEcklund, KEhrlich, RFoland, AGaidarev, PGibbons, LGittelman, BGray, SHartill, DHeltsley, BHopman, PJones, CKreinick, DLohner, MMagerkurth, AMeyer, TWe analyze 9.7x10(6) B_B pairs recorded with the CLEO detector to determine the production ratio of charged to neutral B-meson pairs produced at the Upsilon(4S) resonance. We measure the rates for B0-->J/psiK((*)0) and B+-->J/psiK((*)+) decays and use the world-average B-meson lifetime ratio to extract the relative widths f(+-) / f(00) = gamma(Upsilon(4S)-->B+B-) / gamma(Upsilon(4S)-->B0 B-0)) = 1.04+/-0.07(stat)+/-0.04(syst). With the assumption that f(+-)+f(00) = 1, we obtain f(00) = 0.49+/-0.02(stat)+/-0.01(syst) and f(+-) = 0.51+/-0.02(stat)+/-0.01(syst). This production ratio and its uncertainty apply to all exclusive B-meson branching fractions measured at the Upsilon(4S) resonance. |
| spellingShingle | Alexander, J Baker, R Bebek, C Berger, B Berkelman, K Blanc, F Boisvert, V Cassel, D Dickson, M Drell, P Ecklund, K Ehrlich, R Foland, A Gaidarev, P Gibbons, L Gittelman, B Gray, S Hartill, D Heltsley, B Hopman, P Jones, C Kreinick, D Lohner, M Magerkurth, A Meyer, T Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs. |
| title | Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs. |
| title_full | Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs. |
| title_fullStr | Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs. |
| title_full_unstemmed | Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs. |
| title_short | Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs. |
| title_sort | measurement of the relative branching fraction of upsilon 4s to charged and neutral b meson pairs |
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