A measurement of Rb using a lifetime-mass tag
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...
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1997
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sg-smu-ink.sis_research-46702017-08-24T04:56:31Z A measurement of Rb using a lifetime-mass tag BARATE, R. THULASIDAS, Manoj 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). 1997-05-01T07:00:00Z text application/pdf https://ink.library.smu.edu.sg/sis_research/3668 info:doi/10.1016/S0370-2693(97)00406-1 https://ink.library.smu.edu.sg/context/sis_research/article/4670/viewcontent/MeasurementRbLifetimeMassTag_1997.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Physics |
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Physics BARATE, R. THULASIDAS, Manoj A measurement of Rb using a lifetime-mass tag |
| description |
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). |
| format |
text |
| author |
BARATE, R. THULASIDAS, Manoj |
| author_facet |
BARATE, R. THULASIDAS, Manoj |
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BARATE, R. |
| title |
A measurement of Rb using a lifetime-mass tag |
| title_short |
A measurement of Rb using a lifetime-mass tag |
| title_full |
A measurement of Rb using a lifetime-mass tag |
| title_fullStr |
A measurement of Rb using a lifetime-mass tag |
| title_full_unstemmed |
A measurement of Rb using a lifetime-mass tag |
| title_sort |
measurement of rb using a lifetime-mass tag |
| publisher |
Institutional Knowledge at Singapore Management University |
| publishDate |
1997 |
| url |
https://ink.library.smu.edu.sg/sis_research/3668 https://ink.library.smu.edu.sg/context/sis_research/article/4670/viewcontent/MeasurementRbLifetimeMassTag_1997.pdf |
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