Direct Measurement of Ab and Ac at the Z0 Pole Using a Lepton Tag
Physical Review Letters Volume 83 Issue 17
Page 3384-3389
published_at 1999-10-25
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| File | |
| Title ( eng ) |
Direct Measurement of Ab and Ac at the Z0 Pole Using a Lepton Tag
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| Creator |
SLD Collaboration
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| Source Title |
Physical Review Letters
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| Volume | 83 |
| Issue | 17 |
| Start Page | 3384 |
| End Page | 3389 |
| Abstract |
The parity violation parameters Ab and Ac of the Zbb̅ and Zcc̅ couplings have been measured directly, using the polar angle dependence of the Z0-pole polarized cross sections. Bottom and charmed hadrons were tagged via semileptonic decays. Both the muon and electron identification algorithms take advantage of new multivariate techniques, incorporating for the first time information from the SLD Čerenkov Ring Imaging Detector. Based on the 1993–1995 SLD sample of 150 000 Z0 decays produced with highly polarized electron beams, we measure Ab = 0.910±0.068(stat)±0.037(syst), Ac = 0.642±0.110(stat)±0.063(syst).
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 1999-10-25 |
| Rights |
Copyright (c) 1999 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.83.3384
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.83.3384
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