|
|||||
|
|
Measurement of the lifetime difference in the B0(s) system |
|
| Authors: | Abazov V M Abbott B Abolins M Acharya B S Adams M Adams T Agelou M Agram J-L Ahn S H Ahsan M Alexeev G D Alkhazov G Alton A Alverson G Alves G A Anastasoaie M Andeen T Anderson S Andrieu B Arnoud Y Arov M Askew A Asman B Jesus A C S Assis Atramentov O Autermann C Avila C Badaud F Baden A Bagby L Baldin B Balm P W Banerjee P Banerjee S Barberis E Bargassa P Baringer P Barnes C Barreto J Bartlett J F Bassler U Bauer D Bean A Beauceron S Begalli M Begel M Bellavance A Beri S B Bernardi G Bernhard R Bertram I Besançon M Beuselinck R Bezzubov V A Bhat P C Bhatnagar V Binder M Biscarat C Black K M |
| Affiliation: | Joint Institute for Nuclear Research, Dubna, Russia. |
| Abstract: | We present a study of the decay B0(s) --> J/psiphi. We obtain the CP-odd fraction in the final state at time zero, Rperpendicular = 0.16 +/- 0.10(stat) +/- 0.02 (syst), the average lifetime of the (B0(s), B0(s)) system, tau(B0(s)) = 1.39(+0.13)(-0.16)(stat)(+0.01)(-0.02)(syst) ps, and the relative width difference between the heavy and light mass eigenstates, DeltaGamma/Gamma tripple bond (GammaL - GammaH)/Gamma = 0.24(+0.28)(-0.38)(stat)(+0.03)(-0.04)(syst). With the additional constraint from the world average of the lifetime measurements using semileptonic decays, we find tau(B0(s)) = 1.39 +/- 0.06 ps and DeltaGamma/Gamma = 0.25(+0.14)(-0.15). For the ratio of the B0(s) and B0 lifetimes we obtain tau(B0(s))/tau(B0) = 0.91 +/- 0.09(stat) +/- 0.003(syst). |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |