Improved Measurement of the B- and B0-bar Meson Lifetimes Using Semileptonic Decays
read the original abstract
The lifetimes of the B- and B0-bar mesons are measured using the partially reconstructed semileptonic decays B-bar -> D l- nu-bar X, where D is either a D0 or D*+ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-95 and correspond to about 110 pb-1 of p-bar p collisions at sqrt(s)=1.8 TeV. We measure decay lengths and extract the lifetimes to be tau(B-) = 1.637 +/- 0.058 +0.045 -0.043 ps, tau(B0) = 1.474 +/- 0.039 +0.052 -0.051 ps, and the ratio of the lifetimes to be tau(B-)/tau(B0) = 1.110 +/- 0.056 +0.033 -0.030, where the first uncertainties are statistical and the second are systematic.
This paper has not been read by Pith yet.
Forward citations
Cited by 1 Pith paper
-
Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2023
The Heavy Flavour Averaging Group reports updated world averages for b-hadron, c-hadron, and tau-lepton properties including branching fractions, lifetimes, mixing, CP violation, and CKM elements.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.