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Measurement of the lifetime difference in the Bs0 system

  • V. M. Abazov
  • , B. Abbott
  • , M. Abolins
  • , B. S. Acharya
  • , M. Adams
  • , T. Adams
  • , M. Agelou
  • , J. L. Agram
  • , S. H. Ahn
  • , M. Ahsan
  • , G. D. Alexeev
  • , G. Alkhazov
  • , A. Alton
  • , G. Alverson
  • , G. A. Alves
  • , M. Anastasoaie
  • , T. Andeen
  • , S. Anderson
  • , B. Andrieu
  • , Y. Arnoud
  • M. Arov, A. Askew, B. Åsman, A. C.S. Assis Jesus, O. Atramentov, C. Autermann, C. Avila, F. Badaud, A. Baden, L. Bagby, B. Baldin, P. W. Balm, P. Banerjee, S. Banerjee, E. Barberis, P. Bargassa, P. Baringer, C. Barnes, J. Barreto, J. F. Bartlett, U. Bassler, D. Bauer, A. Bean, S. Beauceron, M. Begalli, M. Begel, A. Bellavance, S. B. Beri, G. Bernardi, R. Bernhard, I. Bertram, M. Besançon, R. Beuselinck, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Binder, C. Biscarat, K. M. Black, I. Blackler, G. Blazey, F. Blekman, S. Blessing, D. Bloch, U. Blumenschein, A. Boehnlein, O. Boeriu, T. A. Bolton, F. Borcherding, G. Borissov, K. Bos, T. Bose, A. Brandt, R. Brock, G. Brooijmans, A. Bross, N. J. Buchanan, D. Buchholz, M. Buehler, V. Buescher, S. Burdin, S. Burke, T. H. Burnett, E. Busato, C. P. Buszello, J. M. Butler, J. Cammin, S. Caron, W. Carvalho, B. C.K. Casey, N. M. Cason, H. Castilla-Valdez, S. Chakrabarti, D. Chakraborty, K. M. Chan, A. Chandra, D. Chapin, F. Charles, E. 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Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

We present a study of the decay Bs0â†'J/ÏÏ•. We obtain the CP-odd fraction in the final state at time zero, R⚥=0.16±0.10(stat)±0.02(syst), the average lifetime of the (Bs0, BÂs0) system, Ï.,Â(Bs0)=1.39- 0.16+0.13(stat)-0.02+0.01(syst)ps, and the relative width difference between the heavy and light mass eigenstates, Î"Î"/ Î"Â≡(Î"L-Î"H)/ Î"Â=0.24-0.38+0.28(stat)-0.04+0.03(syst). With the additional constraint from the world average of the Bs0 lifetime measurements using semileptonic decays, we find Ï.,Â(Bs0)=1.39±0.06ps and Î"Î"/Î"Â=0.25-0.15+0.14. For the ratio of the Bs0 and B0 lifetimes we obtain Ï.,Â(Bs0)Ï.,(B0)=0. 91±0.09(stat)±0.003(syst).

Original languageEnglish
Article number171801
JournalPhysical Review Letters
Volume95
Issue number17
DOIs
Publication statusPublished - 21 Oct 2005
Externally publishedYes

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