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

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;
physical review letters 2001 Vol. 87 pp. 111801-
231
z̆ontar2001physicalobservation

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.

Keywords

belle storage ring data sample branching fractions cabibbo suppressedb sample accumulated report observations decay processes

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DOI:
10.1103/physrevlett.87.111801
URL:
https://sciprofiles.com/publication/view/3cb1404dc...

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