학술논문

Search for $CP$ violation in $D^{+}_{(s)}\rightarrow K^{+}K^{0}_{S}h^{+}h^{-}$ $(h=K,\pi)$ decays and observation of the Cabibbo-suppressed decay $D^{+}_{s}\rightarrow K^{+}K^{-}K^{0}_{S}\pi^{+}$
Document Type
Working Paper
Author
Belle CollaborationMoon, H. K.Won, E.Adachi, I.Aihara, H.Asner, D. M.Atmacan, H.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Bahinipati, S.Banerjee, Sw.Bauer, M.Behera, P.Belous, K.Bennett, J.Bessner, M.Bhardwaj, V.Bhuyan, B.Biswas, D.Bodrov, D.Borah, J.Bozek, A.Bračko, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Červenkov, D.Chang, M. -C.Chekelian, V.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Choi, Y.Choudhury, S.Cinabro, D.Cochran, J.Das, S.Dash, N.De Nardo, G.De Pietro, G.Dhamija, R.Di Capua, F.Dingfelder, J.Doležal, Z.Dong, T. V.Dossett, D.Dubey, S.Epifanov, D.Ferber, T.Ferlewicz, D.Fulsom, B. G.Garg, R.Gaur, V.Giri, A.Goldenzweig, P.Graziani, E.Gu, T.Guan, Y.Gudkova, K.Halder, S.Hara, T.Hayasaka, K.Hayashii, H.Hedges, M. T.Herrmann, D.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Inguglia, G.Ipsita, N.Ishikawa, A.Itoh, R.Iwasaki, M.Jacobs, W. W.Jang, E. -J.Jia, S.Jin, Y.Joo, K. K.Kaliyar, A. B.Kawasaki, T.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K. -H.Kim, Y. -K.Kinoshita, K.Kodyš, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Križan, P.Krokovny, P.Kuhr, T.Kumar, M.Kumar, R.Kumara, K.Kuzmin, A.Kwon, Y. -J.Lalwani, K.Lange, J. S.Lee, S. C.Li, J.Li, L. K.Li, Y.Libby, J.Lieret, K.Lin, Y. -R.Liventsev, D.Luo, T.Ma, Y.Masuda, M.Matsuda, T.Matvienko, D.Maurya, S. K.Merola, M.Metzner, F.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Nakamura, I.Nakao, M.Nakazawa, H.Natochii, A.Nayak, L.Nisar, N. K.Nishida, S.Ogawa, K.Ogawa, S.Ono, H.Oskin, P.Pakhlov, P.Pakhlova, G.Pang, T.Pardi, S.Park, H.Park, J.Park, S. -H.Passeri, A.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Podobnik, T.Prencipe, E.Prim, M. T.Rabusov, A.Röhrken, M.Rostomyan, A.Rout, N.Russo, G.Sandilya, S.Santelj, L.Savinov, V.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Sevior, M. E.Shapkin, M.Sharma, C.Shen, C. P.Shiu, J. -G.Sokolov, A.Solovieva, E.Starič, M.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, K.Uno, S.Urquijo, P.Vahsen, S. E.van Tonder, R.Varner, G.Varvell, K. E.Vinokurova, A.Wang, D.Wang, M. -Z.Watanabe, M.Watanuki, S.Wiechczynski, J.Yabsley, B. D.Yan, W.Yang, S. B.Yelton, J.Yin, J. H.Yook, Y.Yuan, C. Z.Yuan, L.Yusa, Y.Zhai, Y.Zhang, Z. P.Zhilich, V.Zhukova, V.
Source
Phys. Rev. D 108, L111102, 2023
Subject
High Energy Physics - Experiment
Language
Abstract
We search for $CP$ violation by measuring a $T$-odd asymmetry in the Cabibbo-suppressed $D^{+}\rightarrow K^{+}K^{0}_{S}\pi^{+}\pi^{-} $ decay, and in the Cabibbo-favored $D^{+}_{s}\rightarrow K^{+}K^{0}_{S}\pi^{+}\pi^{-}$ and $D^{+}\rightarrow K^{+}K^{-}K^{0}_{S}\pi^{+}$ decays. We use 980 ${\rm fb}^{-1}$ of data collected by the Belle detector running at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The $C\!P$-violating $T$-odd parameter ${a}^{T\text{-}\rm{odd}}_{CP}$ is measured to be ${a}^{T\text{-}\rm{odd}}_{CP}(D^{+}\rightarrow K^{+}K^{0}_{S}\pi^{+}\pi^{-})=(0.34\pm0.87\pm0.32)\%,$ ${a}^{T\text{-}\rm{odd}}_{CP}(D^{+}_{s}\rightarrow K^{+}K^{0}_{S}\pi^{+}\pi^{-})=(-0.46\pm0.63\pm0.38)\%,$ and ${a}^{T\text{-}\rm{odd}}_{CP}(D^{+}\rightarrow K^{+}K^{-}K^{0}_{S}\pi^{+})=(-3.34\pm2.66\pm0.35)\%,$ where the first uncertainty is statistical and the second is systematic. We also report the first observation of the Cabibbo-suppressed decay $D^{+}_{s}\rightarrow K^{+}K^{-}K^{0}_{S}\pi^{+}$. The branching fraction is measured relative to that of the analogous Cabibbo-favored decay : $B(D^{+}_{s}\rightarrow K^{+}K^{-}K^{0}_{S}\pi^{+}) / B(D^{+}_{s}\rightarrow K^{+}K^{0}_{S}\pi^{+}\pi^{-}) = (1.36\pm 0.15\pm 0.04)\%$.