Search for CP violation in the decay $D^\pm \to K_S^0\pi^\pm$ - INSPIRE

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Search for CP violation in the decay $D^\pm \to K_S^0\pi^\pm$

BaBar

Collaboration

Mar, 2011

8 pages

Published in:

Phys.Rev.D 83 (2011) 071103

e-Print:

1011.5477 [hep-ex]

DOI:

10.1103/PhysRevD.83.071103

PDG:

\mathit A_{\mathit CP}({{\mathit K}_S^0}

{{\mathit \pi}^{\pm}}

{{\mathit D}^{\pm}}

\rightarrow

{{\mathit K}_S^0}

{{\mathit \pi}^{\pm}}

Report number:

SLAC-PUB-14314,
BABAR-PUB-10-027

Experiments:

SLAC-PEP2-BABAR

View in:

reference search49 citations

Citations per year

Abstract: (arXiv)

We report on a search for CP violation in the decay

D^\pm \to K^0_{\scriptscriptstyle S} \pi^\pm

using a data set corresponding to an integrated luminosity of

469\,\,fb^{-1}

collected with the \slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller A\kern-0.2em R} detector at the PEP-II asymmetric energy

e^+e^-

storage rings. The CPviolating decay rate asymmetry

A_{CP}

is determined to be

(-0.44 \pm 0.13 \mathrm{(stat)} \pm 0.10 \mathrm{(syst)})%

, consistent with zero at 2.7

\sigma

and with the standard model prediction of

(-0.332 \pm 0.006)%

. This is currently the most precise measurement of this parameter.

Note:

7 pages, 3 figures, submitted to Phys. Rev. Lett

13.25.Ft
14.40.Lb
11.30.Er
CP: violation
charge: asymmetry
D: decay rate
BaBar
electron positron: annihilation
D+: hadronic decay
D-: hadronic decay

References(15)

Figures(0)

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