Search For Cp Violation In The D+ -> Pi(+) Pi(0) Decay At Belle

V. Babu,K. Trabelsi,G. B. Mohanty,T. Aziz, D. Greenwald,I. Adachi,H. Aihara,S. Al Said, D. M. Asner,H. Atmacan,R. Ayad,I. Badhrees,S. Bahinipati,A. M. Bakich,V. Bansal,P. Behera,M. Berger,V. Bhardwaj,J. Biswal,A. Bobrov, A. Bozek, M. Bračko,T. E. Browder,D. Červenkov,A. Chen,B. G. Cheon,K. Chilikin,K. Cho,Y. Choi,S. Choudhury,D. Cinabro,N. Dash,S. Di Carlo,Z. Doležal, Z. Drásal,D. Dutta,S. Eidelman,D. Epifanov,J. E. Fast, T. Ferber,B. G. Fulsom,V. Gaur, N. Gabyshev, A. Garmash,M. Gelb, P. Goldenzweig,B. Golob, Y. Guan,E. Guido,J. Haba,K. Hayasaka,H. Hayashii,M. T. Hedges,T. Horiguchi,W.-S. Hou, K. Inami,A. Ishikawa, R. Itoh,M. Iwasaki,W. W. Jacobs,H. B. Jeon, S. Jia,Y. Jin, D. Joffe, K. K. Joo,T. Julius,A. B. Kaliyar,J. H. Kang,K. H. Kang, G. Karyan,P. Katrenko, T. Kawasaki, C. Kiesling,D. Y. Kim,H. J. Kim,J. B. Kim,K. T. Kim, S. H. Kim,Y. J. Kim,K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov,P. Križan,R. Kroeger,P. Krokovny, T. Kuhr,R. Kulasiri,R. Kumar,A. Kuzmin,Y.-J. Kwon, J. S. Lange,L. K. Li,L. Li Gioi, J. Libby, D. Liventsev,M. Lubej,T. Luo,M. Masuda,T. Matsuda,D. Matvienko,M. Merola, K. Miyabayashi,H. Miyata, R. Mizuk, T. Mori,M. Mrvar, E. Nakano, M. Nakao,T. Nanut, K. J. Nath,Z. Natkaniec, M. Nayak, M. Niiyama,N. K. Nisar,S. Nishida,S. Ogawa, S. Okuno,H. Ono,Y. Ono,W. Ostrowicz,P. Pakhlov, G. Pakhlova,B. Pal, S. Pardi,C.-S. Park, H. Park,S. Paul, R. Pestotnik,L. E. Piilonen,V. Popov, K. Prasanth,C. Pulvermacher,J. Rauch, P. K. Resmi,M. Ritter, A. Rostomyan,G. Russo, Y. Sakai,M. Salehi,S. Sandilya, L. Santelj, T. Sanuki, V. Savinov,O. Schneider, G. Schnell,C. Schwanda,A. J. Schwartz, Y. Seino, K. Senyo,O. Seon,I. S. Seong,M. E. Sevior, V. Shebalin,C. P. Shen,T.-A. Shibata, J.-G. Shiu, B. Shwartz,F. Simon,A. Sokolov,E. Solovieva, S. Stanič, M. Starič,J. F. Strube, M. Sumihama, T. Sumiyoshi,M. Takizawa,U. Tamponi,K. Tanida, F. Tenchini,M. Uchida,T. Uglov, Y. Unno,S. Uno, P. Urquijo,Y. Usov,S. E. Vahsen,C. Van Hulse, G. Varner,K. E. Varvell,E. Waheed,B. Wang,C. H. Wang, M.-Z. Wang, P. Wang,Y. Watanabe,E. Widmann,E. Won, H. Yamamoto, Y. Yamashita,H. Ye,C. Z. Yuan, Y. Yusa,S. Zakharov, Z. P. Zhang,V. Zhilich,V. Zhukova, V. Zhulanov, A. Zupanc

PHYSICAL REVIEW D(2018)

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摘要
We search for CP violation in the charged charm meson decay D+ -> pi(+)pi(0), based on a data sample corresponding to an integrated luminosity of 921 fb(-1) collected by the Belle experiment at the KEKB e(+)e(-) asymmetric-energy collider. The measured CP-violating asymmetry is [+2.31 +/- 1.24(stat) +/- 0.23(syst)] %, which is consistent with the standard model prediction and has a significantly improved precision compared to previous results.
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