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arXiv · 1212.6112

Search for CP Violation in the Decay $D^+\rightarrow K^0_S K^+$

B. R. Ko·E. Won·I. Adachi·H. Aihara·K. Arinstein·D. M. Asner·T. Aushev·A. M. Bakich·K. Belous·V. Bhardwaj·B. Bhuyan·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·T. E. Browder·V. Chekelian·A. Chen·P. Chen·B. G. Cheon·K. Chilikin·R. Chistov·K. Cho·S. -K. Choi·Y. Choi·D. Cinabro·J. Dalseno·Z. Doležal·D. Dutta·S. Eidelman·S. Esen·H. Farhat·J. E. Fast·V. Gaur·N. Gabyshev·S. Ganguly·R. Gillard·Y. M. Goh·B. Golob·K. Hayasaka·H. Hayashii·Y. Hoshi·W. -S. Hou·H. J. Hyun·T. Iijima·A. Ishikawa·Y. Iwasaki·T. Julius·J. H. Kang·E. Kato·C. Kiesling·H. O. Kim·J. B. Kim·K. T. Kim·M. J. Kim·Y. J. Kim·K. Kinoshita·J. Klucar·S. Korpar·R. T. Kouzes·P. Križan·P. Krokovny·T. Kuhr·T. Kumita·A. Kuzmin·Y. -J. Kwon·Y. Li·C. Liu·D. Liventsev·R. Louvot·K. Miyabayashi·H. Miyata·R. Mizuk·G. B. Mohanty·A. Moll·N. Muramatsu·Y. Nagasaka·E. Nakano·M. Nakao·E. Nedelkovska·C. Ng·N. Nellikunnummel·S. Nishida·K. Nishimura·O. Nitoh·S. Ogawa·T. Ohshima·S. Okuno·C. Oswald·P. Pakhlov·G. Pakhlova·H. Park·H. K. Park·T. K. Pedlar·R. Pestotnik·M. Petrič·L. E. Piilonen·K. Prothmann·M. Ritter·M. Röhrken
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Abstract

We search for CP violation in the decay $D^+\rightarrow K^0_S K^+$ using a data sample with an integrated luminosity of 977 fb$^{-1}$ collected with the Belle detector at the KEKB $e^+e^-$ asymmetric-energy collider. No CP violation has been observed and the CP asymmetry in $D^+\rightarrow K^0_S K^+$ decay is measured to be $(-0.25\pm0.28\pm0.14)%$, which is the most sensitive measurement to date. After subtracting CP violation due to $K^0-\bar{K}^0$ mixing, the CP asymmetry in $D^+\rightarrow\bar{K}^0 K^+$ decay is found to be $(+0.08\pm0.28\pm0.14)%$.

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B. R. Ko, E. Won, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Doležal, D. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, Y. Iwasaki, T. Julius, J. H. Kang, E. Kato, C. Kiesling, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, Y. Li, C. Liu, D. Liventsev, R. Louvot, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, E. Nedelkovska, C. Ng, N. Nellikunnummel, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, C. Oswald, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, K. Prothmann, M. Ritter, M. Röhrken. 2013-02-22. Search for CP Violation in the Decay $D^+\rightarrow K^0_S K^+$. https://doi.org/10.1007/jhep02(2013)098

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