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25 April 2024 |
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Observation of B decays to two kaons | S-W Lin
; P Chang
; K Abe
; K Abe
; I Adachi
; H Aihara
; D Anipko
; K Arinstein
; V Aulchenko
; T Aushev
; T Aziz
; A M Bakich
; E Barberio
; A Bay
; I Bedny
; K Belous
; U Bitenc
; I Bizjak
; S Blyth
; A Bondar
; A Bozek
; M Bracko
; Y Chao
; A Chen
; K-F Chen
; W T Chen
; B G Cheon
; R Chistov
; S-K Choi
; Y Choi
; Y K Choi
; J Dalseno
; M Dash
; J Dragic
; S Eidelman
; S Fratina
; N Gabyshev
; T Gershon
; A Go
; G Gokhroo
; B Golob
; H Ha
; J Haba
; T Hara
; K Hayasaka
; H Hayashii
; M Hazumi
; D Heffernan
; Y Hoshi
; S Hou
; W-S Hou
; Y B Hsiung
; T Iijima
; K Ikado
; A Imoto
; K Inami
; A Ishikawa
; H Ishino
; R Itoh
; M Iwasaki
; Y Iwasaki
; H Kaji
; J H Kang
; N Katayama
; H Kawai
; T Kawasaki
; H R Khan
; H Kichimi
; Y J Kim
; K Kinoshita
; S Korpar
; P Krizan
; R Kulasiri
; C C Kuo
; Y-J Kwon
; J S Lange
; J Lee
; M J Lee
; S E Lee
; T Lesiak
; A Limosani
; F Mandl
; T Matsumoto
; S McOnie
; W Mitaroff
; K Miyabayashi
; H Miyake
; H Miyata
; Y Miyazaki
; R Mizuk
; D Mohapatra
; T Mori
; I Nakamura
; E Nakano
; M Nakao
; S Nishida
; O Nitoh
; S Noguchi
; T Nozaki
; S Ogawa
; T Ohshima
; S Okuno
; S L Olsen
; Y Onuki
; H Ozaki
; P Pakhlov
; G Pakhlova
; C W Park
; H Park
; K S Park
; R Pestotnik
; L E Piilonen
; H Sahoo
; Y Sakai
; N Satoyama
; T Schietinger
; O Schneider
; J Schümann
; A J Schwartz
; K Senyo
; M Shapkin
; J B Singh
; A Sokolov
; A Somov
; N Soni
; S Stanic
; M Staric
; H Stoeck
; T Sumiyoshi
; O Tajima
; F Takasaki
; K Tamai
; N Tamura
; M Tanaka
; G N Taylor
; Y Teramoto
; X C Tian
; I Tikhomirov
; K Trabelsi
; T Tsukamoto
; S Uehara
; T Uglov
; K Ueno
; Y Unno
; S Uno
; Y Usov
; G Varner
; S Villa
; C C Wang
; C H Wang
; M-Z Wang
; Y Watanabe
; E Won
; Q L Xie
; B D Yabsley
; A Yamaguchi
; Y Yamashita
; M Yamauchi
; C C Zhang
; L M Zhang
; Z P Zhang
; V Zhilich
; A Zupanc
;
; | Date: |
4 May 2007 | Journal: | Phys Rev Lett, 98 (18), 181804 | Abstract: | Using 449x10(6) BB[over ] pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we observe clear signals for B(+)-->K[over ](0)K(+) and B(0)-->K[over ](0)K(0) decays with 5.3sigma and 6.0sigma significance, respectively. We measure the branching fractions B(B(+)-->K[over ](0)K(+))=(1.22(-0.28-0.16)(+0.32+0.13))x10(-6) and B(B(0)-->K[over ](0)K(0))=(0.87(-0.20)(+0.25)+/-0.09)x10(-6), and partial-rate asymmetries A(CP)(B(+)-->K[over ](0)K(+))=0.13(-0.24)(+0.23)+/-0.02 and A(CP)(B(0)-->K[over ](0)K(0))=-0.58(-0.66)(+0.73)+/-0.04. From a simultaneous fit, we also obtain B(B(+)-->K(0)pi(+))=(22.8(-0.7)(+0.8)+/-1.3)x10(-6) and A(CP)(B(+)-->K(0)pi(+))=0.03+/-0.03+/-0.01. The first and second error in the branching fractions and the partial-rate asymmetries are statistical and systematic, respectively. No signal is observed for B(0)-->K(+)K(-) decays, and for this branching fraction, we set an upper limit of 4.1x10(-7) at the 90% confidence level. | Source: | PubMed, pmid17501563 | Services: | Forum | Review | Favorites |
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