Abazov, V. M. ; Mondal, N. K. ; et., al (2007) Lifetime difference and CP-violating phase in the Bs0 system Physical Review Letters, 98 (12). e121801_1-e121801_7. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v98/i12/e121801
Related URL: http://dx.doi.org/10.1103/PhysRevLett.98.121801
Abstract
From an analysis of the decay Bs0→J/ψφ, we obtain the width difference between the light and heavy mass eigenstates Δ Γ ≡ (ΓL-ΓH)=0.17± 0.09(stat)±0.02(syst) ps-1and the CP-violating phase φ =-0.79±0.56(stat)-0.01+0.14(syst). Under the hypothesis of no CP violation φs≡ 0), we obtain 1/Γ =T̅(Bs0=1.52±0.08(stat)-0.03+0.01 (syst) ps and Δ Γ =0.12-0.10+0.08(stat)±0.02(syst) ps-1. The data sample corresponds to an integrated luminosity of about 1.1 fb-1accumulated with the D0 detector at the Fermilab Tevatron collider. This is the first direct measurement of the CP-violating mixing phase in the Bs0 system.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 75397 |
| Deposited On: | 22 Dec 2011 13:52 |
| Last Modified: | 22 Dec 2011 13:52 |
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