Publication Type
Journal Article
Version
publishedVersion
Publication Date
5-1997
Abstract
ALEPH's published measurement of Rb = Γ(Ζ → bb̄)/Γ(Ζ → hadrons) using a lifetime tag is updated using the full LEP 1 data sample. Considerable effort has been devoted to understanding systematic effects. Charm background is better controlled by combining the lifetime tag with a tag based on the b/c hadron mass difference. Furthermore, the algorithm used to reconstruct the event primary vertex is designed so as to reduce correlations between the two hemispheres of an event. The value of Rb is measured to be 0.2167 ± 0.0011 (stat) ± 0.0013 (syst).
Discipline
Physics
Publication
Physics Letters B
Volume
401
Issue
1-2
First Page
150
Last Page
162
ISSN
0370-2693
Identifier
10.1016/S0370-2693(97)00406-1
Publisher
Elsevier
Embargo Period
8-23-2017
Citation
BARATE, R. and THULASIDAS, Manoj.
A measurement of Rb using a lifetime-mass tag. (1997). Physics Letters B. 401, (1-2), 150-162.
Available at: https://ink.library.smu.edu.sg/sis_research/3668
Copyright Owner and License
Authors
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
http://doi.org/10.1016/S0370-2693(97)00406-1