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arXiv · 1810.06457

Search for $CP$ violation with kinematic asymmetries in the $D^0 \to K^+ K^- \pi^+ \pi^-$ decay

Belle Collaboration·J. B. Kim·E. Won·I. Adachi·H. Aihara·S. Al Said·D. M. Asner·H. Atmacan·V. Aulchenko·T. Aushev·V. Babu·I. Badhrees·S. Bahinipati·A. M. Bakich·V. Bansal·P. Behera·C. Beleño·B. Bhuyan·T. Bilka·J. Biswal·A. Bobrov·A. Bozek·M. Bračko·L. Cao·D. Červenkov·P. Chang·V. Chekelian·A. Chen·B. G. Cheon·K. Chilikin·K. Cho·S. -K. Choi·Y. Choi·D. Cinabro·S. Cunliffe·N. Dash·S. Di Carlo·Z. Doležal·T. V. Dong·S. Eidelman·D. Epifanov·J. E. Fast·T. Ferber·A. Frey·B. G. Fulsom·R. Garg·V. Gaur·N. Gabyshev·A. Garmash·M. Gelb·A. Giri·P. Goldenzweig·D. Greenwald·Y. Guan·J. Haba·T. Hara·K. Hayasaka·H. Hayashii·W. -S. Hou·T. Iijima·K. Inami·G. Inguglia·A. Ishikawa·R. Itoh·M. Iwasaki·Y. Iwasaki·S. Jia·Y. Jin·D. Joffe·G. Karyan·T. Kawasaki·H. Kichimi·C. Kiesling·D. Y. Kim·H. J. Kim·S. H. Kim·K. Kinoshita·P. Kodyš·S. Korpar·D. Kotchetkov·P. Križan·R. Kroeger·P. Krokovny·R. Kulasiri·A. Kuzmin·Y. -J. Kwon·Y. -T. Lai·K. Lalwani·J. S. Lange·I. S. Lee·J. K. Lee·J. Y. Lee·S. C. Lee·C. H. Li·L. K. Li·Y. B. Li·L. Li Gioi·J. Libby·Z. Liptak·D. Liventsev
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Abstract

We search for $CP$ violation in the singly-Cabibbo-suppressed decay $D^{0}\rightarrow K^{+}K^{-}\pi^{+}\pi^{-}$ using data corresponding to an integrated luminosity of $988\text{ }{\rm fb}^{-1}$ collected by the Belle detector at the KEKB $e^{+}e^{-}$ collider. We measure a set of five kinematically dependent $CP$ asymmetries, of which four asymmetries are measured for the first time. The set of asymmetry measurements can be sensitive to $CP$ violation via interference between the different partial-wave contributions to the decay and performed on other pseudoscalar decays. We find no evidence of $CP$ violation.

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Belle Collaboration, J. B. Kim, E. Won, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, D. Greenwald, Y. Guan, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, S. Jia, Y. Jin, D. Joffe, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y. -J. Kwon, Y. -T. Lai, K. Lalwani, J. S. Lange, I. S. Lee, J. K. Lee, J. Y. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, Z. Liptak, D. Liventsev. 2018-10-15. Search for $CP$ violation with kinematic asymmetries in the $D^0 \to K^+ K^- \pi^+ \pi^-$ decay. https://doi.org/10.1103/physrevd.99.011104

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