Observation of Cabibbo SuppressedB→D(*)K−Decays at Belle

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2001
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Abstract
We report observations of the Cabibbo suppressed decays B→D(*)K− using a 10.4fb−1 data sample accumulated at the ϒ(4S) resonance with the Belle detector at the KEKB e+e− storage ring. We find that the ratios of Cabibbo suppressed to Cabibbo favored branching fractions are B(B−→D0K−)/B(B−→D0π−)=0.079±0.009±0.006, B(B¯0→D+K−)/B(B¯0→D+π−)=0.068±0.015±0.007, B(B−→D*0K−)/B(B−→D*0π−)=0.078±0.019±0.009, and B(B¯0→D*+K−)/B(B¯0→D*+π−)=0.074±0.015±0.006. These are the first observations of the B→D+K−, D*0K−, and D*+K− decay processes.
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Authors K. Abe,I. Adachi,Byoung Sup Ahn,H. Aihara,M. Akatsu,G. Alimonti,Y. Asano,T. Aso,V. Aulchenko,T. Aushev,A. M. Bakich,W. Bartel,S. Behari,P. K. Behera,D. Beiline,A. Bondar,A. Bozek,T. E. Browder,B. C. K. Casey,P. Chang,Y. Chao,B. G. Cheon,S.-K. Choi,Y. Choi,S. Eidelman,Y. Enari,R. Enomoto,F. Fang,H. Fujii,C. Fukunaga,M. Fukushima,A. Garmash,A. Gordon,K. Gotow,R. Guo,J. Haba,H. Hamasaki,K. Hanagaki,F. Handa,K. Hara,T. Hara,N. C. Hastings,H. Hayashii,M. Hazumi,E. M. Heenan,I. Higuchi,H. Hirano,T. Hojo,Y. Hoshi,W.-S. Hou,S.-C. Hsu,H.-C. Huang,Y. Igarashi,T. Iijima,H. Ikeda,K. Inami,A. Ishikawa,H. Ishino,R. Itoh,G. Iwai,H. Iwasaki,D. J. Jackson,P. Jalocha,H. K. Jang,M. Jones,R. Kagan,H. Kakuno,J. Kaneko,J. H. Kang,N. Katayama,H. Kawai,T. Kawasaki,H. Kichimi,D. W. Kim,Heejong Kim,S. K. Kim,K. Kinoshita,S. Kobayashi,P. Krokovny,R. Kulasiri,S. Kumar,A. Kuzmin,Y.-J. Kwon,J. S. Lange,M. H. Lee,S. H. Lee,D. Liventsev,R.-S. Lu,D. Marlow,T. Matsubara,S. Matsumoto,K. Miyabayashi,H. Miyake,H. Miyata,G. R. Moloney,S. Mori,T. Mori,A. Murakami,T. Nagamine,Y. Nagasaka,T. Nakadaira,E. Nakano,M. Nakao,J. W. Nam,S. Narita,K. Neichi,S. Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,T. Ohshima,T. Okabe,S. Okuno,S. L. Olsen,H. Ozaki,P. Pakhlov,H. Palka,C. S. Park,H. Park,L. S. Peak,M. Peters,L. E. Piilonen,J. L. Rodriguez,N. Root,M. Rozanska,K. Rybicki,J. Ryuko,H. Sagawa,Y. Sakai,H. Sakamoto,M. Satapathy,A. Satpathy,S. Schrenk,S. Semenov,K. Senyo,M. E. Sevior,H. Shibuya,B. Shwartz,V. Sidorov,J. B. Singh,S. Stanic̆,A. Sugi,A. Sugiyama,K. Sumisawa,T. Sumiyoshi,J.-I. Suzuki,K. Suzuki,S. Suzuki,S. K. Swain,T. Takahashi,F. Takasaki,M. Takita,K. Tamai,N. Tamura,J. Tanaka,M. Tanaka,G. N. Taylor,Y. Teramoto,M. Tomoto,T. Tomura,S. N. Tovey,K. Trabelsi,T. Tsuboyama,T. Tsukamoto,S. Uehara,K. Ueno,Y. Unno,S. Uno,Y. Ushiroda,Y. Usov,S. E. Vahsen,G. Varner,K. E. Varvell,C. C. Wang,J. G. Wang,M.-Z. Wang,Y. Watanabe,E. Won,B. D. Yabsley,Y. Yamada,M. Yamaga,A. Yamaguchi,H. Yamamoto,Y. Yamashita,M. Yamauchi,S. Yanaka,M. Yokoyama,K. Yoshida,Y. Yusa,H. Yuta,C. C. Zhang,J. Zhang,H. W. Zhao,Y. Zheng,V. Zhilich,D. Z̆ontar;K. Abe;I. Adachi;Byoung Sup Ahn;H. Aihara;M. Akatsu;G. Alimonti;Y. Asano;T. Aso;V. Aulchenko;T. Aushev;A. M. Bakich;W. Bartel;S. Behari;P. K. Behera;D. Beiline;A. Bondar;A. Bozek;T. E. Browder;B. C. K. Casey;P. Chang;Y. Chao;B. G. Cheon;S.-K. Choi;Y. Choi;S. Eidelman;Y. Enari;R. Enomoto;F. Fang;H. Fujii;C. Fukunaga;M. Fukushima;A. Garmash;A. Gordon;K. Gotow;R. Guo;J. Haba;H. Hamasaki;K. Hanagaki;F. Handa;K. Hara;T. Hara;N. C. Hastings;H. Hayashii;M. Hazumi;E. M. Heenan;I. Higuchi;H. Hirano;T. Hojo;Y. Hoshi;W.-S. Hou;S.-C. Hsu;H.-C. Huang;Y. Igarashi;T. Iijima;H. Ikeda;K. Inami;A. Ishikawa;H. Ishino;R. Itoh;G. Iwai;H. Iwasaki;D. J. Jackson;P. Jalocha;H. K. Jang;M. Jones;R. Kagan;H. Kakuno;J. Kaneko;J. H. Kang;N. Katayama;H. Kawai;T. Kawasaki;H. Kichimi;D. W. Kim;Heejong Kim;S. K. Kim;K. Kinoshita;S. Kobayashi;P. Krokovny;R. Kulasiri;S. Kumar;A. Kuzmin;Y.-J. Kwon;J. S. Lange;M. H. Lee;S. H. Lee;D. Liventsev;R.-S. Lu;D. Marlow;T. Matsubara;S. Matsumoto;K. Miyabayashi;H. Miyake;H. Miyata;G. R. Moloney;S. Mori;T. Mori;A. Murakami;T. Nagamine;Y. Nagasaka;T. Nakadaira;E. Nakano;M. Nakao;J. W. Nam;S. Narita;K. Neichi;S. Nishida;O. Nitoh;S. Noguchi;T. Nozaki;S. Ogawa;T. Ohshima;T. Okabe;S. Okuno;S. L. Olsen;H. Ozaki;P. Pakhlov;H. Palka;C. S. Park;H. Park;L. S. Peak;M. Peters;L. E. Piilonen;J. L. Rodriguez;N. Root;M. Rozanska;K. Rybicki;J. Ryuko;H. Sagawa;Y. Sakai;H. Sakamoto;M. Satapathy;A. Satpathy;S. Schrenk;S. Semenov;K. Senyo;M. E. Sevior;H. Shibuya;B. Shwartz;V. Sidorov;J. B. Singh;S. Stanic̆;A. Sugi;A. Sugiyama;K. Sumisawa;T. Sumiyoshi;J.-I. Suzuki;K. Suzuki;S. Suzuki;S. K. Swain;T. Takahashi;F. Takasaki;M. Takita;K. Tamai;N. Tamura;J. Tanaka;M. Tanaka;G. N. Taylor;Y. Teramoto;M. Tomoto;T. Tomura;S. N. Tovey;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;S. Uehara;K. Ueno;Y. Unno;S. Uno;Y. Ushiroda;Y. Usov;S. E. Vahsen;G. Varner;K. E. Varvell;C. C. Wang;J. G. Wang;M.-Z. Wang;Y. Watanabe;E. Won;B. D. Yabsley;Y. Yamada;M. Yamaga;A. Yamaguchi;H. Yamamoto;Y. Yamashita;M. Yamauchi;S. Yanaka;M. Yokoyama;K. Yoshida;Y. Yusa;H. Yuta;C. C. Zhang;J. Zhang;H. W. Zhao;Y. Zheng;V. Zhilich;D. Z̆ontar;
Journal physical review letters
Year 2001
DOI 10.1103/physrevlett.87.111801
URL
https://sciprofiles.com/publication/view/3cb1404dcac91babf46055544c712350
Keywords
belle storage ring data sample branching fractions cabibbo suppressedb sample accumulated report observations decay processes

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