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EnglishWe present a measurement of the Bs lifetime in fully and partially reconstructed Bs -> Ds(phi pi)X decays in 1.3 fb-1 of pbar-p collisions at sqrt(s) = 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron. We measure tau(Bs) = 1.518 +/- 0.041 (stat.) +/- 0.027 (syst.) ps. The ratio of this result and the world average B0 lifetime yields tau(Bs)/tau(B0) = 0.99 +/-0.03, which is in agreement with recent theoretical predictions.
| Titolo: | Measurement of the Bs Lifetime in Fully and Partially Reconstructed Bs→D−s(ϕπ−)X Decays in pˉ−p Collisions at √s=1.96 TeV |
| Autori: | |
| Data di pubblicazione: | 2011 |
| Rivista: | |
| Abstract: | We present a measurement of the Bs lifetime in fully and partially reconstructed Bs -> Ds(phi pi)X decays in 1.3 fb-1 of pbar-p collisions at sqrt(s) = 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron. We measure tau(Bs) = 1.518 +/- 0.041 (stat.) +/- 0.027 (syst.) ps. The ratio of this result and the world average B0 lifetime yields tau(Bs)/tau(B0) = 0.99 +/-0.03, which is in agreement with recent theoretical predictions. |
| Handle: | http://hdl.handle.net/11580/19500 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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