Measurement of branching fraction ratios and CP asymmetries in $B^{\pm} \to D_{CP}K^{\pm}$
| dc.creator | Swain, S. K. | |
| dc.creator | Browder, T. E. | |
| dc.date | 2003-04-23 | |
| dc.date | 2003-04-25 | |
| dc.date.accessioned | 2026-07-07T12:01:57Z | |
| dc.date.available | 2026-07-07T12:01:57Z | |
| dc.description | We report results on the decay $B^{-} \to D_{CP}K^{-}$ and its charge conjugate using a data sample of 85.4 million $B\bar{B}$ pairs recorded at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric $e^{+}e^{-}$ storage ring. Ratios of branching fractions of Cabibbo-suppressed to Cabibbo-favored processes are determined to be ${\cal B}(B^- \to D^0 K^-)/{\cal B}(B^- \to D^0 π^-)= 0.077 \pm 0.005(stat) \pm 0.006(sys)$, ${\cal B}(B^- \to D_1 K^-)/{\cal B}(B^- \to D_1 π^-) = 0.093 \pm 0.018(stat) \pm 0.008(sys)$ and ${\cal B}(B^- \to D_2 K^-)/{\cal B}(B^- \to D_2 π^-) = 0.108 \pm 0.019(stat) \pm 0.007(sys)$ where the indices 1 and 2 represent the CP=+1 and CP=$-$1 eigenstates of the $D^{0}-\bar{D^{0}}$ system, respectively. We find the partial-rate charge asymmetries for $B^{-} \to D_{CP}K^{-}$ to be ${\cal{A}}_1 = 0.06 \pm 0.19(stat) \pm 0.04(sys)$ and ${\cal{A}}_2 = -0.19 \pm 0.17(stat) \pm 0.05(sys)$. | |
| dc.description | 10 pages, 3 figures, submitted to Physical Review D | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0304032 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0304032 | |
| dc.identifier | Phys.Rev.D68:051101,2003 | |
| dc.identifier | doi:10.1103/PhysRevD.68.051101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207274 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of branching fraction ratios and CP asymmetries in $B^{\pm} \to D_{CP}K^{\pm}$ | |
| dc.type | text |