Measurement of the Bs0 Lifetime in Fully and Partially Reconstructed Bs0Ds(ϕπ)X Decays in p¯p Collisions at s=1.96TeV

T. Aaltonen et al. (CDF Collaboration)
Phys. Rev. Lett. 107, 272001 – Published 29 December 2011

Abstract

We present a measurement of the Bs0 lifetime in fully and partially reconstructed Bs0Ds(ϕπ)X decays in 1.3fb1 collected in pp¯ collisions at s=1.96TeV by the CDF II detector at the Fermilab Tevatron. We measure τ(Bs0)=1.518±0.041(stat)±0.027(syst)ps. The ratio of this result and the world average B0 lifetime yields τ(Bs0)/τ(B0)=0.99±0.03, which is in agreement with recent theoretical predictions.

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  • Received 10 March 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.272001

© 2011 American Physical Society

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Vol. 107, Iss. 27 — 30 December 2011

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