Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays
Analyzing 600pb-1 of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we measure the branching fraction B(Ds+→τ+ν)= (5.52±0.57±0.21)% using the τ+→ρ+ν̄ decay mode. Combining with other CLEO measurements of B(Ds+→τ+ν) we determine the pseudoscalar decay constant fDs=(259.7±...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2009
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| _version_ | 1797089399552344064 |
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| author | Naik, P Rademacker, J Asner, D Edwards, K Randrianarivony, K Reed, J Robichaud, A Tatishvili, G White, E Briere, R Vogel, H Onyisi, P Rosner, J Alexander, J Cassel, D Ehrlich, R Fields, L Gibbons, L Gray, S Hartill, D Heltsley, B Hunt, J Kreinick, D Kuznetsov, V Ledoux, J |
| author_facet | Naik, P Rademacker, J Asner, D Edwards, K Randrianarivony, K Reed, J Robichaud, A Tatishvili, G White, E Briere, R Vogel, H Onyisi, P Rosner, J Alexander, J Cassel, D Ehrlich, R Fields, L Gibbons, L Gray, S Hartill, D Heltsley, B Hunt, J Kreinick, D Kuznetsov, V Ledoux, J |
| author_sort | Naik, P |
| collection | OXFORD |
| description | Analyzing 600pb-1 of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we measure the branching fraction B(Ds+→τ+ν)= (5.52±0.57±0.21)% using the τ+→ρ+ν̄ decay mode. Combining with other CLEO measurements of B(Ds+→τ+ν) we determine the pseudoscalar decay constant fDs=(259.7±7.8±3.4)MeV consistent with the value obtained from our Ds+→μ+ν measurement of (257.6±10.3±4.3)MeV. Combining these measurements we find a value of fDs=(259.0±6.2±3.0)MeV, that differs from the most accurate prediction based on unquenched lattice gauge theory of (241±3)MeV by 2.4 standard deviations. We also present the first measurements of B(Ds+→K0π+π0)=(1.00±0.18±0.04)%, and B(Ds+→π+π0π0)=(0.65±0.13±0.03)%, and measure a new value for B(Ds+→ηρ+)=(8.9±0.6±0.5)%. © 2009 The American Physical Society. |
| first_indexed | 2024-03-07T03:03:36Z |
| format | Journal article |
| id | oxford-uuid:b1c52364-b7ac-4d15-8b22-e872c439b80d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:03:36Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:b1c52364-b7ac-4d15-8b22-e872c439b80d2022-03-27T04:06:48ZMeasurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decaysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b1c52364-b7ac-4d15-8b22-e872c439b80dEnglishSymplectic Elements at Oxford2009Naik, PRademacker, JAsner, DEdwards, KRandrianarivony, KReed, JRobichaud, ATatishvili, GWhite, EBriere, RVogel, HOnyisi, PRosner, JAlexander, JCassel, DEhrlich, RFields, LGibbons, LGray, SHartill, DHeltsley, BHunt, JKreinick, DKuznetsov, VLedoux, JAnalyzing 600pb-1 of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we measure the branching fraction B(Ds+→τ+ν)= (5.52±0.57±0.21)% using the τ+→ρ+ν̄ decay mode. Combining with other CLEO measurements of B(Ds+→τ+ν) we determine the pseudoscalar decay constant fDs=(259.7±7.8±3.4)MeV consistent with the value obtained from our Ds+→μ+ν measurement of (257.6±10.3±4.3)MeV. Combining these measurements we find a value of fDs=(259.0±6.2±3.0)MeV, that differs from the most accurate prediction based on unquenched lattice gauge theory of (241±3)MeV by 2.4 standard deviations. We also present the first measurements of B(Ds+→K0π+π0)=(1.00±0.18±0.04)%, and B(Ds+→π+π0π0)=(0.65±0.13±0.03)%, and measure a new value for B(Ds+→ηρ+)=(8.9±0.6±0.5)%. © 2009 The American Physical Society. |
| spellingShingle | Naik, P Rademacker, J Asner, D Edwards, K Randrianarivony, K Reed, J Robichaud, A Tatishvili, G White, E Briere, R Vogel, H Onyisi, P Rosner, J Alexander, J Cassel, D Ehrlich, R Fields, L Gibbons, L Gray, S Hartill, D Heltsley, B Hunt, J Kreinick, D Kuznetsov, V Ledoux, J Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays |
| title | Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays |
| title_full | Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays |
| title_fullStr | Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays |
| title_full_unstemmed | Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays |
| title_short | Measurement of the pseudoscalar decay constant fDs using Ds+→τ+ν, τ+→ρ+ν̄ decays |
| title_sort | measurement of the pseudoscalar decay constant fds using ds τ ν τ ρ ν̄ decays |
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