在\(B^0 \to K^0_SK^0_SK^0_S\)衰变中对时间相关的CP破坏不对称性的测量。
Measurement of time-dependent CP-violating asymmetries in B0 --> K(s)0K(s)0K(s)0 decay.
作者信息
Sumisawa K, Ushiroda Y, Hazumi M, Abe K, Abe K, Adachi I, Aihara H, Asano Y, Aulchenko V, Aushev T, Bakich A M, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder T E, Chao Y, Chen A, Chen K-F, Chen W T, Cheon B G, Chistov R, Choi Y, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Enari Y, Fang F, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Gorisek A, Haba J, Hara K, Hara T, Hayashii H, Higuchi T, Hokuue T, Hoshi Y, Hou S, Hou W-S, Hsiung Y B, Iijima T, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kang J H, Kang J S, Kataoka S U, Katayama N, Kawai H, Kawasaki T, Khan H R, Kichimi H, Kim H J, Kim H O, Kim S K, Kim S M, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar S, Kuo C C, Kusaka A, Kuzmin A, Kwon Y-J, Lange J S, Leder G, Lesiak T, Lin S-W, Mandl F, Marlow D, Matsumoto T, Matyja A, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Nagamine T, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen S L, Onuki Y, Ostrowicz W, Ozaki H, Park C W, Park H, Parslow N, Peak L S, Pestotnik R, Piilonen L E, Rozanska M, Sagawa H, Sakai Y, Sarangi T R, Sato N, Schietinger T, Schneider O, Seuster R, Sevior M E, Shibuya H, Sidorov V, Singh J B, Somov A, Stamen R, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Teramoto Y, Tian X C, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Varner G, Varvell K E, Villa S, Wang C C, Wang C H, Wang M-Z, Xie Q L, Yabsley B D, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yang Heyoung, Zhang J, Zhang L M, Zhang Z P, Zhilich V, Zontar D
机构信息
Osaka University, Osaka.
出版信息
Phys Rev Lett. 2005 Aug 5;95(6):061801. doi: 10.1103/PhysRevLett.95.061801. Epub 2005 Aug 1.
We present a measurement of CP-violation parameters in the B0 --> K(s)0K(s)0K(s)0 decay based on a sample of 275 x 10(6) BB pairs collected at the upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed in the decay B0 --> K(s)0K(s)0K(s)0, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distributions of the proper-time interval between the two B decays: S = +1.26 +/- 0.68(stat) +/- 0.20(syst) and [symbol: see text] = +0.54 +/- 0.34(stat) +/- 0.09(syst).
我们基于在KEKB能量不对称正负电子对撞机上使用Belle探测器在Upsilon(4S)共振处收集的275×10⁶个BB对样本，给出了B⁰→Kₛ⁰Kₛ⁰Kₛ⁰衰变中CP破坏参数的测量结果。一个中性B介子在B⁰→Kₛ⁰Kₛ⁰Kₛ⁰衰变中被完全重建，伴随的B介子的味道从其衰变产物中识别出来。CP破坏参数是从两个B衰变之间的固有时间间隔分布的不对称性中获得的：S = +1.26±0.68（统计）±0.20（系统），[符号：见文本] = +0.54±0.34（统计）±0.09（系统）。
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