Observation of bso→K K- and measurements of branching fractions of charmless two-body decays of B0 and Bs0 mesons in p_p Collisions at s=1.96TeV

A Abulencia; D Acosta; J Adelman; T Affolder; T Akimoto; MG Albrow; D Ambrose; S Amerio; D Amidei; A Anastassov; K Anikeev; A Annovi; J Antos; M Aoki; G Apollinari; JF Arguin; T Arisawa; A Artikov; W Ashmanskas; A Attal; F Azfar; P Azzi-Bacchetta; P Azzurri; N Bacchetta; H Bachacou; W Badgett; A Barbaro-Galtieri; VE Barnes; BA Barnett; S Baroiant; V Bartsch; G Bauer; F Bedeschi; S Behari; S Belforte; G Bellettini; J Bellinger; A Belloni; E Ben Haim; D Benjamin; A Beretvas; J Beringer; T Berry; A Bhatti; M Binkley; D Bisello; RE Blair; C Blocker; B Blumenfeld; A Bocci; A Bodek; V Boisvert; G Bolla; A Bolshov; D Bortoletto; J Boudreau; A Boveia; B Brau; C Bromberg; E Brubaker; J Budagov; HS Budd; S Budd; K Burkett; G Busetto; P Bussey; KL Byrum; S Cabrera; M Campanelli; M Campbell; F Canelli; A Canepa; D Carlsmith; R Carosi; S Carron; M Casarsa; A Castro; P Catastini; D Cauz; M Cavalli-Sforza; A Cerri; L Cerrito; SH Chang; J Chapman; YC Chen; M Chertok; G Chiarelli; G Chlachidze; F Chlebana; I Cho; K Cho; D Chokheli; JP Chou; PH Chu; SH Chuang; K Chung; WH Chung; YS Chung; M Ciljak; CI Ciobanu

Journal article

Observation of bso→K K- and measurements of branching fractions of charmless two-body decays of B0 and Bs0 mesons in p_p Collisions at s=1.96TeV

A Abulencia, D Acosta, J Adelman, T Affolder, T Akimoto, MG Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, JF Arguin, T Arisawa, A Artikov, W Ashmanskas, A Attal Show all

Physical Review Letters | Published : 2006

DOI: 10.1103/PhysRevLett.97.211802

Abstract

We search for decays of the type B(s)0â†h+hâ€- (where h,hâ€=K or Ï€) in 180 pb-1 of pÂp collisions collected at the Tevatron by the upgraded Collider Detector at Fermilab. We report the first observation of the new mode Bs0â†K+K- with a yield of 236Â±32 events, corresponding to (fs/fd) ÃB(Bs0â†K+K-)/B(B0â†K+Ï€-)=0. 46Â±0.08(stat)Â±0.07(syst), where fs/fd is the ratio of production fractions of Bs0 and B0. We find results in agreement with world averages for the B0 modes, and set the following new limits at 90% C.L.: B(Bs0â†K-Ï€+)<5.6Ã10-6 and B(Bs0â† Ï€+Ï€-)<1.7Ã10-6. © 2006 The American Physical Society.