Search for CP violation using T-odd correlations in D^0→K^+K^-π^+π^- decays

Creators: del Amo Sanchez, P.; Cheng, C. H.; Doll, D. A.; Echenard, B.; Hitlin, D. G.; Ongmongkolkul, P.; Porter, F. C.; Rakitin, A. Y.; BaBar Collaboration

Abstract

We search for CP violation in a sample of 4.7×10^4 Cabibbo suppressed D^0→K^+K^-π^+π^- decays. We use 470 fb^(-1) of data recorded by the BABAR detector at the PEP-II asymmetric-energy e^+e^- storage rings running at center-of-mass energies near 10.6 GeV. CP violation is searched for in the difference between the T-odd asymmetries, obtained using triple product correlations, measured for D^0 and D[overbar]^0 decays. The measured CP violation parameter is A_T=(1.0±5.1_(stat)±4.4_(syst))×10^(-3).

Additional Information

© 2010 The American Physical Society. Received 17 March 2010; published 23 June 2010. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), and STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation.

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