H
H. B. Li
Researcher at Chinese Academy of Sciences
Publications - 14
Citations - 1019
H. B. Li is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Dark energy & Inflation (cosmology). The author has an hindex of 12, co-authored 14 publications receiving 937 citations.
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Journal ArticleDOI
Physics at BES-III
D. M. Asner,Ted Barnes,Jianming Bian,Ikaros I.Y. Bigi,Nora Brambilla,I. Boyko,Vladimir Bytev,K. T. Chao,Jérôme Charles,H. S. Chen,J. C. Chen,Yi Chen,Yonghu Chen,H. Y. Cheng,Dmitri Dedovich,Sébastien Descotes-Genon,C. D. Fu,X. Garcia i Tormo,Y.N. Gao,Kanglin He,Z. G. He,J. F. Hu,H. M. Hu,Bin Huang,Y. Jia,Hong-Ying Jin,S. Jin,Y. P. Kuang,Heiko Lacker,H. B. Li,Joshua Le-Wei Li,Wei Li,Xiaoyuan Li,Bo Liu,H. H. Liu,J. H. Liu,Hong Ma,J. P. Ma,Yajun Mao,X. H. Mo,Stephen L. Olsen,Antonio Pich,Antonio Morelos Pineda,R. G. Ping,C. F. Qiao,G. Qin,H. Qin,J. M. Roney,G. Rong,L. Roos,X. Y. Shen,Joan Soto,Achim Stahl,Shengsen Sun,Stephane T'Jampens,Antonio Vairo,P. L. Wang,Yanchu Wang,Yuyi Wang,N. Wu,Y. L. Wu,Zhi-zhong Xing,G. F. Xu,Ming Xu,Mingming Yang,Ming Yang,Youhua Yang,Chen Yuan,D. H. Zhang,D. Y. Zhang,Jingzhi Zhang,Z. X. Zhang,Xinmin Zhang,Xuan Zhang,Yanxi Zhang,Qiang Zhao,A. Zhemchugov,Han-Qing Zheng,Y. H. Zheng,M. Zhong,S. Zhu,Yingxuan Zhu,V. Zhuravlov,B. S. Zou,Jiaheng Zou +84 more
TL;DR: In this article, the authors provide detailed discussion on important topics in tau-charm physics that will be explored during the next few years at \bes3. Both theoretical and experimental issues are covered, including extensive reviews of recent theoretical developments and experimental techniques.
Journal ArticleDOI
A measurement of the branching fraction for the inclusive B→Xsγ decays with the Belle detector
Kazuo Abe,Iki Adachi,Byoung Sup Ahn,Hiroaki Aihara,M. Akatsu,G. Alimonti,K. Aoki,Kiyoshi Asai,Y. Asano,T. Aso,V.M. Aulchenko,T. Aushev,A. M. Bakich,Elzbieta Banas,W. Bartel,S. Behari,Prafulla Kumar Behera,D. Beiline,A. Bondar,A. Bozek,T. E. Browder,B. C. K. Casey,P. Chang,Yuan Chao,Byung Gu Cheon,Steve K. Choi,Young-Il Choi,Y. Doi,J. Dragic,A. Drutskoy,S.I. Eidelman,Y. Enari,Ryoji Enomoto,F. Fang,H. Fujii,Chikara Fukunaga,Masaki Fukushima,A. Garmash,Ascelin Gordon,K. Gotow,H. Guler,R. Guo,J. Haba,H. Hamasaki,Kazunori Hanagaki,F. Handa,K. Hara,T. Hara,Tomiyoshi Haruyama,N. C. Hastings,K. Hayashi,H. Hayashii,Masashi Hazumi,E. M. Heenan,Y. Higasino,I. Higuchi,T. Higuchi,H. Hirano,T. Hojo,Y. Hoshi,W. S. Hou,Shih-Chieh Hsu,Hsuan Cheng Huang,S. Ichizawa,Y. Igarashi,Toru Iijima,Hirokazu Ikeda,K. Ikeda,K. Inami,A. Ishikawa,Hirokazu Ishino,R. Itoh,Go Iwai,Hiroyuki Iwasaki,Y. Iwasaki,D. J. Jackson,P. Jalocha,H. K. Jang,M. D. Jones,R. Kagan,H. Kakuno,J. Kaneko,Ju Hwan Kang,J. S. Kang,P. Kapusta,Nobuhiko Katayama,H. Kawai,N. Kawamura,T. Kawasaki,H. Kichimi,D. W. Kim,Heejong Kim,H. J. Kim,Hyunwoo Kim,Seong Keun Kim,K. Kinoshita,K. Korotushenko,P. Krokovny,R. Kulasiri,Suneel Kumar,T. Kuniya,E. Kurihara,A.S. Kuzmin,Y. J. Kwon,J. S. Lange,Moo Hyun Lee,Se Lee,H. B. Li,D. Liventsev,Rong-Shyang Lu,A. Manabe,Takahiko Matsubara,S. Matsui,S. Matsumoto,T. Matsumoto,Y. Mikami,K. Misono,K. Miyabayashi,H. Miyake,H. Miyata,L.C. Moffitt,G. R. Moloney,G. F. Moorhead,Shigeki Mori,A. Murakami,T. Nagamine,Y. Nagasaka,Y. Nagashima,T. Nakadaira,E. Nakano,M. Nakao,J. W. Nam,S. Narita,Z. Natkaniec,K. Neichi,S. Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,T. Ohshima,Yasuhiro Ohshima,T. Okabe,T. Okazaki,S. Okuno,S.L. Olsen,W. Ostrowicz,H. Ozaki,H. Palka,Changwon Park,C. W. Park,H. Park,L.S. Peak,M. D. Peters,L. E. Piilonen,E.J. Prebys,J.L. Rodriguez,N.I. Root,M. Rozanska,K. Rybicki,J. Ryuko,Hiroyuki Sagawa,Y. Sakai,Hiroshi Sakamoto,M. Satapathy,A. Satpathy,S. Schrenk,S. Semenov,K. Senyo,M. E. Sevior,H. Shibuya,B.A. Shwartz,V.A. Sidorov,Jasvinder A. Singh,S. Stanič,A. Sugi,A. Sugiyama,K. Sumisawa,T. Sumiyoshi,K. Suzuki,Shiro Suzuki,Shota Suzuki,S.K. Swain,H. Tajima,T. Takahashi,F. Takasaki,M. Takita,K. Tamai,N. Tamura,Junichi Tanaka,M. Tanaka,Y. Tanaka,G. N. Taylor,Y. Teramoto,Makoto Tomoto,T. Tomura,S. N. Tovey,K. Trabelsi,T. Tsuboyama,Yuichi Tsujita,T. Tsukamoto,Sadaharu Uehara,K. Ueno,N. Ujiie,Y. Unno,S. Uno,Y. Ushiroda,Yu. V. Usov,S. E. Vahsen,G. S. Varner,Kevin Varvell,C. C. Wang,C. H. Wang,M. Z. Wang,T. J. Wang,Y. Watanabe,E. Won,B.D. Yabsley,Yasuhiko Yamada,M. Yamaga,A. Yamaguchi,H. Yamamoto,H. Yamaoka,Y. Yamaoka,Y. Yamashita,M. Yamauchi,S. Yanaka,Masashi Yokoyama,Kyo Yoshida,Y. Yusa,H. Yuta,C. C. Zhang,J. Zhang,Yangheng Zheng,V.N. Zhilich,D. Žontar +235 more
TL;DR: In this paper, the branching fraction of the inclusive radiative B meson decay B→Xsγ was measured to be 3.36±0.53(stat)± 0.42(sys)+0.50−0.54(th))×10−4.
Journal ArticleDOI
Precise Measurement of the e+e- →π+π-J /ψ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV
M. Ablikim,M. N. Achasov,S. Ahmed,Xiaocong Ai,O. Albayrak,M. Albrecht,D. J. Ambrose,A. Amoroso,F. F. An,Q. An,J. Z. Bai,O. Bakina,R. Baldini Ferroli,Yong Ban,Dan Bennett,J. V. Bennett,Niklaus Berger,M. Bertani,D. Bettoni,J. M. Bian,Fabrizio Bianchi,E. Boger,E. Boger,I. Boyko,R. A. Briere,H. Cai,X. Z. Cai,Orhan Cakir,A. Calcaterra,G. F. Cao,Serkant Ali Cetin,J. Chai,J. F. Chang,G. A. Chelkov,G. A. Chelkov,G. A. Chelkov,Guo-Ming Chen,H. S. Chen,J. C. Chen,Mingshui Chen,S. Z. Chen,Sai-Juan Chen,X. D. Chen,X. R. Chen,Yuanbo Chen,X. K. Chu,G. Cibinetto,H. L. Dai,J. P. Dai,A. Dbeyssi,Dmitri Dedovich,Z. Y. Deng,A. Denig,I. Denysenko,M. Destefanis,F. De Mori,Y. Ding,C. Dong,Jianmin Dong,L. Y. Dong,M. Y. Dong,Z. L. Dou,S. X. Du,P. F. Duan,Jingzhou Fan,Jian Fang,S. S. Fang,Xin Fang,Yi Fang,R. Farinelli,L. Fava,F. Feldbauer,Giulietto Felici,Cunfeng Feng,E. Fioravanti,M. Fritsch,C. D. Fu,Q. Gao,Xian Gao,Y.N. Gao,Z. Gao,I. Garzia,K. Goetzen,L. Gong,W. X. Gong,W. Gradl,Michela Greco,M. H. Gu,Y. T. Gu,Y. H. Guan,A. Q. Guo,L. B. Guo,R. P. Guo,Y. Guo,Y. P. Guo,Zahra Haddadi,A. Hafner,S. Han,X. Q. Hao,F. A. Harris,Kanglin He,F. H. Heinsius,T. Held,Yuekun Heng,T. Holtmann,Z. L. Hou,Chen Hu,H. M. Hu,J. F. Hu,Tao Hu,Y. Hu,Guangshun Huang,J. S. Huang,Xingtao Huang,Xiaozhong Huang,Z. L. Huang,Talib Hussain,W. Ikegami Andersson,Q. P. Ji,Q. P. Ji,X. B. Ji,X. L. Ji,L. W. Jiang,X. S. Jiang,X. Y. Jiang,Jianbin Jiao,Z. Jiao,D. P. Jin,S. Jin,Tord Johansson,A. Julin,N. Kalantar-Nayestanaki,X. L. Kang,X. S. Kang,M. Kavatsyuk,Bibo Ke,P. Kiese,R. Kliemt,B. Kloss,O. B. Kolcu,B. Kopf,M. Kornicer,Andrzej Kupsc,Wolfgang Kuhn,J. Lange,M. Lara,P. Larin,L. Lavezzi,H. Leithoff,C. Leng,Cui Li,Cheng Li,D. M. Li,F. Y. Li,F. Y. Li,Gang Li,H. B. Li,H. J. Li,Jiemin Li,Jin Li,K. Li,Lei Li,P. R. Li,P. R. Li,Q. Y. Li,Teng Li,Wei Li,Wu Li,X. L. Li,Xiaoyu Li,Xiang Li,Y. B. Li,Z. B. Li,Hao Liang,Y. F. Liang,Y. T. Liang,G. R. Liao,D. X. Lin,Bingxuan Liu,B. J. Liu,Cunming Liu,D. Y. Liu,Fu-Hu Liu,Fang Liu,Feng Liu,H. B. Liu,H. H. Liu,Haiwen Liu,J. Liu,Jianbei Liu,Jia Liu,Jie Liu,Kai Liu,Ka-Yuet Liu,L. D. Liu,P. L. Liu,Qi Liu,S. B. Liu,Xiang Liu,Y. B. Liu,Yong Liu,Z. Liu,Zhiqing Liu,H. Loehner,X. C. Lou,H. J. Lu,Junguang Lu,Y. P. Lu,Yunpeng Lu,C. L. Luo,Ming-Xing Luo,T. Luo,X. L. Luo,Xiao-Rui Lyu,F. C. Ma,Hong Ma,L. L. Ma,Minglin Ma,Qingming Ma,T. Ma,X. N. Ma,X. Y. Ma,Y. Ma,F. E. Maas,M. Maggiora,Q. A. Malik,Y. J. Mao,Z. P. Mao,S. Marcello,J. G. Messchendorp,G. Mezzadri,J. Min,T. J. Min,R. E. Mitchell,X. H. Mo,Y. J. Mo,C. Morales Morales,N. Yu. Muchnoi,H. Muramatsu,P. Musiol,Y. Nefedov,F. Nerling,I. B. Nikolaev,Z. Ning,S. Nisar,S. L. Niu,Niu Xiaoyang,S. L. Olsen,Qun Ouyang,S. Pacetti,Y. Pan,P. Patteri,M. Pelizaeus,H. P. Peng,Krisztian Peters,Krisztian Peters,Joachim Pettersson,J. L. Ping,R. G. Ping,R. Poling,V. Prasad,H. R. Qi,Ming Qi,S. Qian,C. F. Qiao,L. Q. Qin,N. Qin,X. S. Qin,Z. H. Qin,J. F. Qiu,K. H. Rashid,C. F. Redmer,M. Ripka,G. Rong,Ch. Rosner,X. D. Ruan,A. Sarantsev,A. Sarantsev,M. Savrie,C. Schnier,K. Schoenning,W. Shan,M. Shao,C. P. Shen,P. X. Shen,X. Y. Shen,H. Y. Sheng,W. M. Song,Xinying Song,S. Sosio,S. Spataro,G. X. Sun,J. F. Sun,Siyuan Sun,X. H. Sun,Y. J. Sun,Y. Z. Sun,Z. J. Sun,Z. T. Sun,Changjian Tang,X. W. Tang,I. Tapan,E. H. Thorndike,M. Tiemens,I. Uman,G. S. Varner,B. Wang,B. L. Wang,Ding-Xiong Wang,D. Y. Wang,Kai Wang,L. L. Wang,L. S. Wang,Meng Wang,P. Wang,P. Wang,W. F. Wang,W. P. Wang,Xuejun Wang,Yanwei Wang,Y. D. Wang,Y. F. Wang,Y. Q. Wang,Wang Zengqiang,Zheng Wang,Zhao-Long Wang,Zhen Wang,T. Weber,D. H. Wei,P. Weidenkaff,S. P. Wen,U. Wiedner,M. Wolke,L. H. Wu,L. J. Wu,Z. Wu,L. Xia,L. G. Xia,Y. Xia,D. Xiao,H. Xiao,Z. J. Xiao,Y. G. Xie,Yuehong Xie,Q. L. Xiu,G. F. Xu,Jia Xu,Lei Xu,Q. J. Xu,Qingnian Xu,X. P. Xu,L. Yan,Wenbiao Yan,W. C. Yan,Y. H. Yan,Hongji Yang,H. X. Yang,L. Yang,Y. X. Yang,M. Ye,M. H. Ye,J.H. Yin,Z. Y. You,B. X. Yu,Chunxu Yu,J. S. Yu,Chang-Zheng Yuan,Ye-Fei Yuan,A. Yuncu,A. A. Zafar,Y. Zeng,Zhi Zeng,B. X. Zhang,B. Y. Zhang,Cen Zhang,D. H. Zhang,H. H. Zhang,H. Y. Zhang,J. M. Zhang,Jia-ju Zhang,Jie Zhang,Jianguo Zhang,Jianhao Zhang,J. Y. Zhang,Jianyu Zhang,K. Zhang,L. Zhang,S. Q. Zhang,Xuan Zhang,Yun-Zhi Zhang,Y. Zhang,Y. N. Zhang,Yiming Zhang,Yu Zhang,Zhiqing Zhang,Zhenyu Zhang,Zhiyong Zhang,Guangyu Zhao,J. W. Zhao,Jie Zhao,Jingzhou Zhao,Lei Zhao,Ling Zhao,M. G. Zhao,Qiang Zhao,Q. W. Zhao,Shujun Zhao,Tiefu Zhao,Yongke Zhao,Zhengguo Zhao,A. Zhemchugov,A. Zhemchugov,B. Zheng,Jiajun Zheng,W. J. Zheng,Y. H. Zheng,B. Zhong,Li Zhou,Xiang Zhou,X. K. Zhou,X. R. Zhou,Xu Zhou,Kejun Zhu,Kai Zhu,Shou-hua Zhu,S. H. Zhu,Xianglei Zhu,Yingchun Zhu,Y. S. Zhu,Zhanwen Zhu,Jian Zhuang,L. Zotti,B. S. Zou,Jiaheng Zou +433 more
TL;DR: The cross section for the process e^{+}e^{-}→π′+}π′-}J/ψ is measured precisely at center-of-mass energies from 3.77 to 4.60 GeV using 9 fb^{-1} of data collected with the BESIII detector operating at the BEPCII storage ring.
Posted Content
Physics at BES-III
D. M. Asner,Ted Barnes,Jianming Bian,Ikaros I.Y. Bigi,Nora Brambilla,I. Boyko,Vladimir Bytev,K. T. Chao,Jérôme Charles,H. S. Chen,J. C. Chen,Yi Chen,Yonghu Chen,H. Y. Cheng,Dmitri Dedovich,Sébastien Descotes-Genon,C. D. Fu,X. Garcia i Tormo,Y.N. Gao,Kanglin He,Z. G. He,J. F. Hu,H. M. Hu,Bin Huang,Y. Jia,Hong-Ying Jin,S. Jin,Y. P. Kuang,Heiko Lacker,H. B. Li,Joshua Le-Wei Li,Wei Li,Xiaoyuan Li,Bo Liu,H. H. Liu,J. H. Liu,Hong Ma,J. P. Ma,Yajun Mao,X. H. Mo,Stephen L. Olsen,Antonio Pich,Antonio Morelos Pineda,R. G. Ping,C. F. Qiao,G. Qin,H. Qin,J. M. Roney,G. Rong,L. Roos,X. Y. Shen,Joan Soto,Achim Stahl,Shengsen Sun,Stephane T'Jampens,Antonio Vairo,P. L. Wang,Yanchu Wang,Yuyi Wang,N. Wu,Y. L. Wu,Zhi-zhong Xing,G. F. Xu,Ming Xu,Mingming Yang,Ming Yang,Youhua Yang,Chen Yuan,D. H. Zhang,D. Y. Zhang,Jingzhi Zhang,Z. X. Zhang,Xinmin Zhang,Xuan Zhang,Yanxi Zhang,Qiang Zhao,A. Zhemchugov,Han-Qing Zheng,Y. H. Zheng,M. Zhong,S. Zhu,Yingxuan Zhu,V. Zhuravlov,B. S. Zou,Jiaheng Zou +84 more
TL;DR: In this paper, the authors provide detailed discussion on important topics in tau-charm physics that will be explored during the next few years at \bes3. Both theoretical and experimental issues are covered, including extensive reviews of recent theoretical developments and experimental techniques.
Journal ArticleDOI
Measurement of the CP violation parameter sin2ø 1 in B d 0 meson decays
A. Abashian,Kazuo Abe,I. Adachi,Byoung Sup Ahn,H. Aihara,M. Akatsu,Gianluca Alimonti,K. Aoki,Kiyoshi Asai,M. Asai,Y. Asano,Tsukasa Aso,V. M. Aulchenko,T. Aushev,A. M. Bakich,Elzbieta Banas,S. Behari,Prafulla Kumar Behera,D. Beiline,A. Bondar,A. Bozek,T. E. Browder,B. C. K. Casey,P. Chang,Y. Chao,Byung Gu Cheon,S. K. Choi,Y. Choi,Yasuo Doi,J. Dragic,A. Drutskoy,S. Eidelman,Yuji Enari,R. Enomoto,C.W. Everton,F. Fang,H. Fujii,Kazuya Fujimoto,Y. Fujita,Chikara Fukunaga,Masaki Fukushima,A. Garmash,Ascelin Gordon,K. Gotow,H. Guler,R. Guo,J. Haba,T. Haji,H. Hamasaki,Kazunori Hanagaki,F. Handa,K. Hara,T. Hara,Tomiyoshi Haruyama,N. C. Hastings,K. Hayashi,H. Hayashii,Masashi Hazumi,E. M. Heenan,Yusuke Higashi,Y. Higashino,I. Higuchi,Takuya Higuchi,T. Hirai,H. Hirano,M. Hirose,T. Hojo,Y. Hoshi,K. Hoshina,W. S. Hou,Shih-Chieh Hsu,H. C. Huang,Y. C. Huang,S. Ichizawa,Y. Igarashi,T. Iijima,Hirokazu Ikeda,K. Ikeda,K. Inami,Y. Inoue,A. Ishikawa,Hirokazu Ishino,R. Itoh,Go Iwai,M. Iwai,M. Iwamoto,Hiroyuki Iwasaki,Y. Iwasaki,D. J. Jackson,P. Jalocha,H. K. Jang,Matthew Jones,R. Kagan,H. Kakuno,J. Kaneko,J. H. Kang,J. S. Kang,P. Kapusta,Katsuyu Kasami,N. Katayama,H. Kawai,M. Kawai,N. Kawamura,T. Kawasaki,H. Kichimi,D. W. Kim,Heejong Kim,H. J. Kim,Hyunwoo Kim,S. K. Kim,K. Kinoshita,S. Kobayashi,S. Koike,S. Koishi,Y. Kondo,H. Konishi,K. Korotushenko,P. Krokovny,R. Kulasiri,Shaji Kumar,T. Kuniya,E. Kurihara,A. Kuzmin,Y. J. Kwon,M. H. Lee,S. H. Lee,Christos Leonidopoulos,H. B. Li,Rong-Shyang Lu,Yasuhiro Makida,A. Manabe,Daniel Robert Marlow,Takahiko Matsubara,T. Matsuda,S. Matsui,S. Matsumoto,T. Matsumoto,Y. Mikami,K. Misono,K. Miyabayashi,H. Miyake,H. Miyata,L.C. Moffitt,A. Mohapatra,G. R. Moloney,G. F. Moorhead,N. Morgan,Shigeki Mori,T. Mori,A. Murakami,T. Nagamine,Yasushi Nagasaka,Y. Nagashima,T. Nakadaira,Takashi Nakamura,E. Nakano,M. Nakao,H. Nakazawa,J. W. Nam,S. Narita,Z. Natkaniec,K. Neichi,S. Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,T. Ohshima,Yasuhiro Ohshima,T. Okabe,T. Okazaki,S. Okuno,S. L. Olsen,W. Ostrowicz,H. Ozaki,P. Pakhlov,H. Palka,Changwon Park,C. W. Park,Hyangkyu Park,L. S. Peak,M. D. Peters,L. E. Piilonen,E.J. Prebys,J. L. Rodriguez,N.I. Root,M. Rozanska,K. Rybicki,J. Ryuko,Hiroyuki Sagawa,S. Saitoh,Y. Sakai,Hiroshi Sakamoto,H. Sakaue,M. Satapathy,Nobuaki Sato,A. Satpathy,S. Schrenk,S. Semenov,Y. Settai,M. E. Sevior,H. Shibuya,B. Shwartz,A. Sidorov,V.A. Sidorov,J. B. Singh,S. Stanič,A. Sugi,A. Sugiyama,K. Sumisawa,T. Sumiyoshi,J.I. Suzuki,J. Suzuki,K. Suzuki,Shiro Suzuki,S. Y. Suzuki,S. K. Swain,Hiroyuki Tajima,T. Takahashi,F. Takasaki,M. Takita,K. Tamai,N. Tamura,J. Tanaka,M. Tanaka,Y. Tanaka,G. N. Taylor,Y. Teramoto,Makoto Tomoto,T. Tomura,S. N. Tovey,K. Trabelsi,T. Tsuboyama,Yuichi Tsujita,T. Tsukamoto,S. Uehara,K. Ueno,N. Ujiie,Y. Unno,S. Uno,Y. Ushiroda,Yu. V. Usov,S. E. Vahsen,G. S. Varner,Kevin Varvell,C. C. Wang,C. H. Wang,M. Z. Wang,T. J. Wang,Y. Watanabe,E. Won,Bruce Yabsley,Yasuhiko Yamada,M. Yamaga,A. Yamaguchi,H. Yamaguchi,H. Yamamoto,T. Yamanaka,Hiroshi Yamaoka,Yoshio Yamaoka,Y. Yamashita,M. Yamauchi,S. Yanaka,Masashi Yokoyama,Kyo Yoshida,Y. Yusa,H. Yuta,C. C. Zhang,H. W. Zhao,J. Zhang,Y. Zheng,V.N. Zhilich,D. Žontar +272 more
TL;DR: In this article, a measurement of the standard model violation parameter is presented based on a 10.5-sample data set collected at the KEKB asymmetric collider, and the flavor of the accompanying $B$ meson is identified from its charged particle decay products from the asymmetry in the distribution of the time interval between the two $B€-meson decay points.