Measurement of branching fractions for B → ππ, Kπ and KK decays
Kazuo Abe,I. Adachi,Byoung Sup Ahn,Hiroaki Aihara,M. Akatsu,Gianluca Alimonti,Y. Asano,Tsukasa Aso,V.M. Aulchenko,T. Aushev,A. M. Bakich,W. Bartel,S. Behari,Prafulla Kumar Behera,D. Beiline,Alexander Bondar,A. Bozek,T. E. Browder,B. C. K. Casey,P. Chang,Y. Chao,K. F. Chen,Byung Gu Cheon,Suyong Choi,Y. Choi,Semen Eidelman,Y. Enari,R. Enomoto,F. Fang,H. Fujii,Masaki Fukushima,A. Garmash,Ascelin Gordon,K. Gotow,R. Guo,J. Haba,H. Hamasaki,Kazunori Hanagaki,F. Handa,K. Hara,T. Hara,N. C. Hastings,H. Hayashii,Masashi Hazumi,E. M. Heenan,I. Higuchi,Takuya Higuchi,H. Hirano,T. Hojo,Y. Hoshi,W. S. Hou,Shih-Chieh Hsu,H. C. Huang,Y. Igarashi,T. Iijima,Hirokazu Ikeda,K. Inami,A. Ishikawa,Hirokazu Ishino,R. Itoh,Go Iwai,Hiroyuki Iwasaki,Y. Iwasaki,D. J. Jackson,P. Jalocha,H. K. Jang,Matthew Jones,H. Kakuno,J. Kaneko,J. H. Kang,J. S. Kang,N. Katayama,H. Kawai,T. Kawasaki,H. Kichimi,D. W. Kim,H.B. Kim,H. J. Kim,Seong Keun Kim,K. Kinoshita,S. Kobayashi,P. Krokovny,R. Kulasiri,Suneel Kumar,A.S. Kuzmin,Y. J. Kwon,J. S. Lange,M. H. Lee,S. H. Lee,D. Liventsev,Rong-Shyang Lu,Daniel Robert Marlow,Takahiko Matsubara,S. Matsumoto,T. Matsumoto,Y. Mikami,K. Miyabayashi,H. Miyake,H. Miyata,G. R. Moloney,Shigeki Mori,T. Mori,A. Murakami,T. Nagamine,Yasushi Nagasaka,T. Nakadaira,E. Nakano,M. Nakao,J. W. Nam,S. Narita,S. Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,Takayoshi Ohshima,T. Okabe,S. Okuno,S. L. Olsen,H. Ozaki,P. Pakhlov,H. Palka,Changwon Park,C. W. Park,H. Park,L.S. Peak,M. D. Peters,L. E. Piilonen,Jorge Luis Rodriguez,N.I. Root,M. Rozanska,K. Rybicki,J. Ryuko,H. 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,J.I. Suzuki,K. Suzuki,Shiro Suzuki,S. Y. Suzuki,S. K. Swain,Hiroyuki Tajima,T. Takahashi,F. Takasaki,M. Takita,K. Tamai,N. Tamura,Junichi Tanaka,M. H. Tanaka,G. N. Taylor,Y. Teramoto,Makoto Tomoto,T. Tomura,S. N. Tovey,K. Trabelsi,T. Tsuboyama,T. Tsukamoto,Sadaharu Uehara,K. Ueno,Y. Unno,S. Uno,Y. Ushiroda,Yu. V. Usov,S. E. Vahsen,G. S. Varner,K. E. Varvell,C. C. Wang,C. H. 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,Masashi Yokoyama,Y. Yusa,H. Yuta,C. C. Zhang,J. Zhang,H. W. Zhao,Y. Zheng,V.N. Zhilich,D. Žontar +203 more
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TLDR
In this paper, the authors report measurements of the branching fractions for $B^0\to\pi+\pi-$, $K^+K^-$, K^+k^-$ and K^ 0\pi^0.Abstract:
We report measurements of the branching fractions for $B^0\to\pi^+\pi^-$, $K^+\pi^-$, $K^+K^-$ and $K^0\pi^0$, and $B^+\to\pi^+\pi^0$, $K^+\pi^0$, $K^0\pi^+$ and $K^+\overline{K}{}^0$. The results are based on 10.4 fb$^{-1}$ of data collected on the $\Upsilon$(4S) resonance at the KEKB $e^+e^-$ storage ring with the Belle detector, equipped with a high momentum particle identification system for clear separation of charged $\pi$ and $K$ mesons. We find ${\cal B}(B^0\to\pi^+\pi^-) =(0.56^{+0.23}_{-0.20}\pm 0.04)\times 10^{-5}$, ${\cal B}(B^0\to K^+\pi^-) =(1.93^{+0.34 +0.15}_{-0.32 -0.06})\times 10^{-5}$, ${\cal B}(B^+\to K^+\pi^0) =(1.63^{+0.35 +0.16}_{-0.33 -0.18})\times 10^{-5}$, ${\cal B}(B^+\to K^0\pi^+) =(1.37^{+0.57 +0.19}_{-0.48 -0.18})\times 10^{-5}$, and ${\cal B}(B^0\to K^0\pi^0) =(1.60^{+0.72 +0.25}_{-0.59 -0.27})\times 10^{-5}$, where the first and second errors are statistical and systematic. We also set upper limits of ${\cal B}(B^+\to\pi^+\pi^0)<1.34\times 10^{-5}$, ${\cal B}(B^0\to K^+K^-)<0.27\times 10^{-5}$, and ${\cal B}(B^+\to K^+\overline{K}{}^0)<0.50\times 10^{-5}$ at the 90% confidence level.read more
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Journal ArticleDOI
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