Search for CP violation in D± meson decays to ϕπ±.

Starič M,Aihara H,Arinstein K,Asner D M,Aushev T,Bakich A M,Bay A,Bhardwaj V,Bhuyan B,Bozek A,Bračko M,Browder T E,Chen A,Chen P,Cheon B G,Chilikin K,Chistov R,Cho I-S,Cho K,Choi Y,Doležal Z,Drásal Z,Eidelman S,Fast J E,Gaur V,Gabyshev N,Golob B,Haba J,Hayasaka K,Horii Y,Hoshi Y,Hou W-S,Hsiung Y B,Iijima T,Inami K,Ishikawa A,Itoh R,Iwabuchi M,Iwasaki Y,Iwashita T,Julius T,Kang J H,Kawasaki T,Kiesling C,Kim H J,Kim H O,Kim J B,Kim K T,Kim M J,Kim Y J,Kinoshita K,Ko B R,Kobayashi N,Koblitz S,Kodyš P,Korpar S,Križan P,Kumita T,Kwon Y-J,Lange J S,Lee S-H,Li J,Li Y,Libby J,Liu C,Liu Z Q,Louvot R,McOnie S,Miyabayashi K,Miyata H,Miyazaki Y,Mohanty G B,Nakano E,Natkaniec Z,Nishida S,Nitoh O,Nozaki T,Ohshima T,Okuno S,Olsen S L,Pakhlova G,Park H K,Park K S,Pestotnik R,Petrič M,Piilonen L E,Röhrken M,Ryu S,Sahoo H,Sakai K,Sakai Y,Sanuki T,Schneider O,Schwanda C,Schwartz A J,Seon O,Sevior M E,Shebalin V,Shen C P,Shibata T-A,Shiu J-G,Shwartz B,Simon F,Smerkol P,Sohn Y-S,Sokolov A,Stanič S,Sumihama M,Sumisawa K,Tatishvili G,Teramoto Y,Trabelsi K,Uchida M,Uehara S,Uglov T,Unno Y,Uno S,Urquijo P,Varner G,Vossen A,Wang C H,Wang M-Z,Watanabe M,Watanabe Y,Williams K M,Won E,Yabsley B D,Yamashita Y,Yuan C Z,Zhang C C,Zhang Z P,Zhilich V,Zhulanov V,Zupanc A, Null Null

Physical review letters（2012）

Cited 34|Views9

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Abstract

We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D(±)→K(+)K(-)π(±) and the Cabibbo-favored decays D(s)(±)→K(+)K(-)π(±) in the K(+)K(-) mass region of the ϕ resonance. Using 955 fb(-1) of data collected with the Belle detector, we obtain A(CP)(D+→ϕπ+)=(+0.51±0.28±0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.

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