Analysis of CP Violation in D0K+K-π0

Zheng, Bo  (School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China) (Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany) ; Zhang, Zhen-Hua  (School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China) ; Zhou, Hang  (School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China)

22 November 2018

Abstract: We study the CP violation induced by the interference between two intermediate resonances K(892)+ and K(892)- in the phase space of singly-Cabibbo-suppressed decay D0K+K-π0 . We adopt the factorization-assisted topological approach in dealing with the decay amplitudes of D0K±K(892) . The CP asymmetries of two-body decays are predicted to be very tiny, which are (-1.27±0.25)×10-5 and (3.86±0.26)×10-5 , respectively, for D0K+K(892)- and D0K-K(892)+ , while the differential CP asymmetry of D0K+K-π0 is enhanced because of the interference between the two intermediate resonances, which can reach as large as 3×10-4 . For some NPs which have considerable impacts on the chromomagnetic dipole operator O8g , the global CP asymmetries of D0K+K(892)- and D0K-K(892)+ can be then increased to (0.56±0.08)×10-3 and (-0.50±0.04)×10-3 , respectively. The regional CP asymmetry in the overlapped region of the phase space can be as large as (1.3±0.3)×10-3 .


Published in: Advances in High Energy Physics 2018 (2018) 7627308
Published by: Hindawi
DOI: 10.1155/2018/7627308
arXiv: 1811.07556
License: CC-BY-3.0



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