Evidence For The Decay B-S(0)->(Dsds(*))-D-(*) And A Measurement Of Delta Gamma(Cp)(S)/Gamma(S)
V. Abazov, B. Abbott, M. Abolins,B. Acharya,M. Adams,T. Adams, E. Aguilo, M. Ahsan,G. Alexeev, G. Alkhazov,A. Alton, G. Alverson,G. Alves,M. Anastasoaie,L. Ancu, T. Andeen,B. Andrieu,M. Anzelc,M. Aoki,Y. Arnoud,M. Arov,M. Arthaud, A. Askew, B. Åsman,A. Assis Jesus, O. Atramentov,C. Avila,F. Badaud,L. Bagby, B. Baldin,D. Bandurin,P. Banerjee, S. Banerjee,E. Barberis,A.-F. Barfuss,P. Bargassa, P. Baringer,J. Barreto,J. Bartlett, U. Bassler,D. Bauer,S. Beale,A. Bean,M. Begalli,M. Begel,C. Belanger-Champagne, L. Bellantoni,A. Bellavance,J. Benitez,S. Beri,G. Bernardi, R. Bernhard,I. Bertram,M. Besançon,R. Beuselinck,V. Bezzubov,P. Bhat,V. Bhatnagar,G. Blazey,F. Blekman, S. Blessing,K. Bloom,A. Boehnlein,D. Boline,T. Bolton, E. Boos,G. Borissov,T. Bose,A. Brandt,R. Brock,G. Brooijmans, A. Bross,D. Brown,X. Bu,N. Buchanan, D. Buchholz,M. Buehler,V. Buescher,V. Bunichev, S. Burdin,T. Burnett,C. Buszello, P. Calfayan, S. Calvet,J. Cammin, M. Carrasco-Lizarraga,E. Carrera,W. Carvalho,B. 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PHYSICAL REVIEW LETTERS（2009）
引用 21|浏览188
摘要
We search for the semi-inclusive process B-s(0)->(DsDs(*))-D-(*) using 2.8 fb(-1) of pp collisions at s=1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe 26.6 +/- 8.4 signal events with a significance above background of 3.2 standard deviations yielding a branching ratio of B(B-s(0)->(DsDs(*))-D-(*))=0.035 +/- 0.010(stat.)+/- 0.011(syst.). Under certain theoretical assumptions, these double-charm final states saturate CP-even eigenstates in the B-s(0) decays resulting in a width difference of Delta Gamma(CP)(s)/Gamma(s)=0.072 +/- 0.021(stat.)+/- 0.022(syst.).
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