Study of $\overline{B}{}^0\rightarrow D^{+}h^{-} (h=K/\pi)$ decays at Belle - INSPIRE

DataBETA

Study of $\overline{B}{}^0\rightarrow D^{+}h^{-} (h=K/\pi)$ decays at Belle

Belle

Collaboration

•

E. Waheed
(
- KEK, Tsukuba
)

Nov 9, 2021

8 pages

Published in:

Phys.Rev.D 105 (2022) 1, 012003

Published: Jan 1, 2022

e-Print:

2111.04978 [hep-ex]

DOI:

10.1103/PhysRevD.105.012003 (publication)

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit D}^{-}}{{\mathit K}^{+}}

Report number:

Belle Preprint 2021-25,
KEK Preprint 2021-30

View in:

reference search14 citations

Citations per year

Abstract: (APS)

We present a measurement of the branching fractions of the Cabibbo favored

{\bar{B}}^{0} \to D^{+} π^{-}

and the Cabibbo suppressed

{\bar{B}}^{0} \to D^{+} K^{-}

decays. We find

B ({\bar{B}}^{0} \to D^{+} π^{-}) = (2.48 \pm 0.01 \pm 0.09 \pm 0.04) \times 10^{- 3}

and

B ({\bar{B}}^{0} \to D^{+} K^{-}) = (2.03 \pm 0.05 \pm 0.07 \pm 0.03) \times 10^{- 4}

decays, where the first uncertainty is statistical, the second is systematic, and the third uncertainty is due to the

D^{+} \to K^{-} π^{+} π^{+}

branching fraction. The ratio of branching fractions of

{\bar{B}}^{0} \to D^{+} K^{-}

and

{\bar{B}}^{0} \to D^{+} π^{-}

is measured to be

R^{D} = [8.19 \pm 0.20 (stat) \pm 0.23 (syst)] \times 10^{- 2}

. These measurements are performed using the full Belle dataset, which corresponds to

772 \times 10^{6} B \bar{B}

pairs and use the Belle II software framework for data analysis.

Note:

8 pages, 2 figures

electron positron: annihilation
electron positron: colliding beams
B: pair production
anti-B0: hadronic decay
D+: hadronic decay
anti-B0: branching ratio: measured
branching ratio: ratio: measured
BELLE
KEK-B
suppression

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Figures(1)

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