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arXiv · 1703.05721

First measurement of $\boldsymbol{T}$-odd moments in $\boldsymbol{D^{0} \rightarrow K_{S}^{0} π^{+} π^{-} π^{0}}$ decays

Belle Collaboration·K. Prasanth·J. Libby·I. Adachi·H. Aihara·S. Al Said·D. M. Asner·V. Aulchenko·T. Aushev·R. Ayad·V. Babu·I. Badhrees·S. Bahinipati·A. M. Bakich·V. Bansal·E. Barberio·M. Berger·V. Bhardwaj·B. Bhuyan·J. Biswal·A. Bobrov·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·T. E. Browder·D. Červenkov·V. Chekelian·A. Chen·B. G. Cheon·K. Chilikin·R. Chistov·K. Cho·S. -K. Choi·Y. Choi·D. Cinabro·N. Dash·S. Di Carlo·Z. Doležal·Z. Drásal·D. Dutta·S. Eidelman·D. Epifanov·H. Farhat·J. E. Fast·T. Ferber·B. G. Fulsom·V. Gaur·N. Gabyshev·A. Garmash·R. Gillard·P. Goldenzweig·D. Greenwald·J. Haba·T. Hara·K. Hayasaka·M. T. Hedges·W. -S. Hou·K. Inami·A. Ishikawa·R. Itoh·Y. Iwasaki·W. W. Jacobs·I. Jaegle·H. B. Jeon·Y. Jin·D. Joffe·K. K. Joo·T. Julius·A. B. Kaliyar·K. H. Kang·G. Karyan·T. Kawasaki·C. Kiesling·D. Y. Kim·J. B. Kim·K. T. Kim·M. J. Kim·S. H. Kim·Y. J. Kim·K. Kinoshita·P. Kodyš·S. Korpar·D. Kotchetkov·P. Križan·P. Krokovny·T. Kuhr·R. Kulasiri·R. Kumar·T. Kumita·A. Kuzmin·Y. -J. Kwon·J. S. Lange·I. S. Lee·C. H. Li·L. Li·L. Li Gioi·D. Liventsev·M. Lubej·T. Luo
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Abstract

We report the first measurement of the $T$-odd moments in the decay $D^{0} \rightarrow K_{S}^{0} π^{+} π^{-} π^{0}$ from a data sample corresponding to an integrated luminosity of $966\,{\rm fb}^{-1}$ collected by the Belle experiment at the KEKB asymmetric-energy $e^+ e^-$ collider. From these moments we determine the $CP$-violation-sensitive asymmetry $a_{CP}^{T\text{-odd}} = \left[-0.28 \pm 1.38 ~(\rm{stat.}) ^{+0.23}_{-0.76} ~(\rm{syst.})\right] \times 10^{-3}$, which is consistent with no $CP$ violation. In addition, we perform $a_{CP}^{T\text{-odd}}$ measurements in different regions of the $D^{0} \rightarrow K_{S}^{0} π^{+} π^{-} π^{0}$ phase space; these are also consistent with no $CP$ violation.

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Belle Collaboration, K. Prasanth, J. Libby, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, E. Barberio, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Doležal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, D. Greenwald, J. Haba, T. Hara, K. Hayasaka, M. T. Hedges, W. -S. Hou, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, L. Li Gioi, D. Liventsev, M. Lubej, T. Luo. 2017-03-16. First measurement of $\boldsymbol{T}$-odd moments in $\boldsymbol{D^{0} \rightarrow K_{S}^{0} π^{+} π^{-} π^{0}}$ decays. https://doi.org/10.1103/physrevd.95.091101

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