Chang M-C, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Aushev T, Bakich A M, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Browder T E, Chang P, Chao Y, Chen A, Chen K-F, Chen W T, Cheon B G, Chistov R, Choi S-K, Choi Y, Choi Y K, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Ha H, Haba J, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou W-S, Hsiung Y B, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kang J H, Kataoka S U, Kawai H, Kawasaki T, Khan H R, Kichimi H, Kim S K, Kim Y J, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo C C, Kuzmin A, Kwon Y-J, Leder G, Lee M J, Lee S E, Lesiak T, Limosani A, Lin S-W, Majumder G, Mandl F, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagamine T, Nakamura I, Nakano E, Nakao M, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen S L, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park K S, Peak L S, Pestotnik R, Piilonen L E, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz A J, Seidl R, Senyo K, Shapkin M, Shibuya H, Shwartz B, Singh J B, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor G N, Teramoto Y, Tian X C, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Varvell K E, Villa S, Wang C C, Wang C H, Wang M-Z, Watanabe Y, Wedd R, Won E, Xie Q L, Yamaguchi A, Yamashita Y, Yamauchi M, Yusa Y, Zhang C C, Zhang L M, Zhang Z P, Zupanc A
Department of Physics, Fu Jen Catholic University, Taipei.
Phys Rev Lett. 2007 Mar 30;98(13):131803. doi: 10.1103/PhysRevLett.98.131803.
We report the first observation of B(0)-->J/psieta decay. These results are obtained from a data sample that contains 449 x10(6) BB[over] pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal with a significance of 8.1 sigma and obtain a branching fraction of (9.5+/-1.7(stat)+/-0.8(syst)) x 10(-6).
我们报告了对B(0)→J/ψη衰变的首次观测。这些结果是从一个数据样本中获得的，该数据样本包含在KEKB非对称能量e⁺e⁻对撞机上，利用Belle探测器在Upsilon(4S)共振处积累的449×10⁶个BB对。我们观测到一个显著性为8.1σ的信号，并得到分支比为(9.5±1.7(统计)±0.8(系统))×10⁻⁶ 。
