First measurement of Γ(D(s)(+) → μ+ν) / Γ(D(s)(+) → φ π+)
We present a measurement of Γ(D+s→μ+ν) / (D+s→φπ+)=0.245±0.052±0.074. Using this ratio and B(D+s→φπ+)=(3.7±0.9)% we extract fDs=344±37±52±42 MeV, where the last error is due to the uncertainty in the D+s→φπ+ absolute branching ratio. This result is larger than most theoretical predictions....
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| Main Authors: | , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
1994
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| Online Access: | https://ink.library.smu.edu.sg/sis_research/3512 http://doi.org/10.1103/PhysRevD.49.5690 |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | We present a measurement of Γ(D+s→μ+ν) / (D+s→φπ+)=0.245±0.052±0.074. Using this ratio and B(D+s→φπ+)=(3.7±0.9)% we extract fDs=344±37±52±42 MeV, where the last error is due to the uncertainty in the D+s→φπ+ absolute branching ratio. This result is larger than most theoretical predictions. |
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