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First measurement ofΓ(Ds+→μ+ν)Γ(Ds+→φπ+)
- Source :
- Physical Review D. 49:5690-5700
- Publication Year :
- 1994
- Publisher :
- American Physical Society (APS), 1994.
-
Abstract
- We present a measurement of [Gamma]([ital D][sub [ital s]][sup +][r arrow][mu][sup +][nu])/[Gamma]([ital D][sub [ital s]][sup +][r arrow][phi][pi][sup +])= 0.245[plus minus]0.052[plus minus]0.074. Using this ratio and [ital scrB]([ital D][sub [ital s]][sup +][r arrow][phi][pi][sup +])=(3.7[plus minus]0.9)% we extract [ital f][sub [ital D][ital s]]=344[plus minus]37[plus minus]52[plus minus]42 MeV, where the last error is due to the uncertainty in the [ital D][sub [ital s]][sup +][r arrow][phi][pi][sup +] absolute branching ratio. This result is larger than most theoretical predictions.
Details
- ISSN :
- 05562821
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi...........623f06276da9890902babe60f9e13f5c