Search for CP violation using T-odd correlations in D-0 -> K+K-pi(+)pi(-) decays

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doi:10.1007/JHEP10(2014)005

A search for CP violation using T-odd correlations is performed using the four-body D-0 -> K+K-pi(+)pi(-) decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb(-1) and 2.0 fb(-1) recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP-violating asymmetry alpha(T-odd)(CP) is measured to be (0.18 +/- 0.29 (stat) +/- 0.04 (syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D-0 decay time, are also presented. No significant deviation from the CP conservation hypothesis is found.

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2014). Search for CP violation using T-odd correlations in D-0 -> K+K-pi(+)pi(-) decays. JOURNAL OF HIGH ENERGY PHYSICS(10) [10.1007/JHEP10(2014)005].