Measurement of the Parity-Violation Parameter Ab from the Left-Right Forward-Backward Asymmetry of b Quark Production in Z0 Decays Using a Momentum-Weighted Track-Charge Technique
Physical Review Letters Volume 74 Issue 15
Page 2890-2894
published_at 1995-04-10
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| File | |
| Title ( eng ) |
Measurement of the Parity-Violation Parameter Ab from the Left-Right Forward-Backward Asymmetry of b Quark Production in Z0 Decays Using a Momentum-Weighted Track-Charge Technique
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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 | 2890 |
| End Page | 2894 |
| Abstract |
Using an impact parameter tag to select an enriched sample of Z0→bb̅ events, and the net momentum-weighted track charge to identify the sign of the charge of the underlying b quark, we have measured the left-right forward-backward asymmetry for b quark production as a function of polar angle. Based on 1.8 pb-1 of Z0 decay data produced with a mean electron beam polarization of Pe = 63%, this yields a direct measurement of the extent of parity violation in the Zbb coupling of Ab = 0.87±0.11(stat)±0.09(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.74.2890
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.74.2890
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