Acciarri, M. ; Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Gurtu, A. ; et., al (2000) Measurement of Rb and Br(b →ℓνX) at LEP using double-tag methods European Physical Journal C (EPJ C), The Particles and Fields, 13 (1). pp. 47-61. ISSN 1434-6044
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Official URL: http://www.springerlink.com/content/xecldf2b5qub6k...
Related URL: http://dx.doi.org/10.1007/s100520000296
Abstract
We present a combined measurement of and the semileptonic branching ratio of b quarks in Z decays, , using double-tag methods. Two analyses are performed on one million hadronic Z decays collected in 1994 and 1995. The first analysis exploits the capabilities of the silicon microvertex detector. The tagging of b-events is based on the large impact parameter of tracks from weakly decaying b-hadrons with respect to the collision point. In the second analysis, a high- lepton tag is used to enhance the b-component in the sample and its momentum spectrum is used to constrain the model dependent uncertainties in the semileptonic b-decay. The analyses are combined in order to provide precise determinations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer. |
| ID Code: | 83554 |
| Deposited On: | 21 Feb 2012 12:53 |
| Last Modified: | 21 Feb 2012 12:53 |
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