Search for CP Violation in the Decays $${D^{\pm} \to K^0_{\scriptscriptstyle S} K^\pm$$, $${D_s^{\pm} \to K^0_{\scriptscriptstyle S} K^\pm$$, and $${D_s^{\pm} \to K^0_{\scriptscriptstyle S} π^\pm$$

Program Document ·

DOI:https://doi.org/10.48550/arXiv.1209.0138· OSTI ID:1878221

We report on a search for CP violation in the decays K^0_{\scriptscriptstyle S} K^\pm,{D_s^{\pm} \to K^0_{\scriptscriptstyle S} K^\pm,and{D_s^{\pm} \to K^0_{\scriptscriptstyle S} \pi^\pmusingadatasetcorrespondingtoanintegratedluminosityof469\,\invfb$$collected with the BaBar detector at the PEP-II asymmetric energy \epem storage rings. The CP-violating decay rate asymmetries$$A_{CP}aredeterminedtobe(+0.13 \pm 0.36 \stat \pm 0.25 \syst)%,(-0.05 \pm 0.23 \stat \pm 0.24 \syst)%,and(+0.6 \pm 2.0 \stat \pm 0.3 \syst)%$, respectively for the three modes, before correction for the relevant K^0_{\scriptscriptstyle S} asymmetry. After this correction, all the measurements are consistent with zero within one standard deviation. These are currently the most precise measurements of these asymmetries.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1878221
• Report Number(s): SLAC-PUB-17083
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS