Measurement of the Parity-Violation Parameters Ab and Ac from the Left-Right Forward-Backward Asymmetry of Leptons in Hadronic Events at the Z0 Resonance
Physical Review Letters Volume 74 Issue 15
Page 2895-2899
published_at 1995-04-10
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| File | |
| Title ( eng ) |
Measurement of the Parity-Violation Parameters Ab and Ac from the Left-Right Forward-Backward Asymmetry of Leptons in Hadronic Events at the Z0 Resonance
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| Creator |
SLD Collaboration
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| Source Title |
Physical Review Letters
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| Volume | 74 |
| Issue | 15 |
| Start Page | 2895 |
| End Page | 2899 |
| Abstract |
The parity-violating parameters Ab and Ac are directly measured by the SLD experiment at the SLAC Linear Collider in e+e- collisions with polarized electrons at the Z0 resonance. Leptons with distinctive total and transverse momenta are used to select and analyze Z0→bb̅ and Z0→cc̅ events. Ab and Ac are extracted by forming the left-right forward-backward asymmetry in electron beam polarization and quark polar angle. From our 1993 sample of 1.8 pb–1 of Z0 decay data with an average electron beam polarization of 63% we find Ab = 0.91±0.14 (stat) ± 0.07 (syst) and Ac = 0.37±0.23 (stat) ± 0.21 (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 | 1995-04-10 |
| Rights |
Copyright (c) 1995 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.74.2895
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.74.2895
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