First Measurement of the Left-Right Charge Asymmetry in Hadronic Z Boson Decays and a New Determination of sin2θWeff
Physical Review Letters Volume 78 Issue 1
Page 17-21
published_at 1997-01-06
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| File | |
| Title ( eng ) |
First Measurement of the Left-Right Charge Asymmetry in Hadronic Z Boson Decays and a New Determination of sin2θWeff
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| Creator |
SLD Collaboration
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| Source Title |
Physical Review Letters
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| Volume | 78 |
| Issue | 1 |
| Start Page | 17 |
| End Page | 21 |
| Abstract |
We present the first measurement of the left-right charge asymmetry AQobs in hadronic Z boson decays. This was performed at Ec.m. = 91.27 GeV with the SLD at the SLAC Linear Collider with a polarized electron beam. Using 89 838 events we obtain AQobs = 0.225±0.056±0.019, which leads to a measurement of the electron left-right asymmetry parameter, Ae = 0.162±0.041±0.014, and sin2θWeff = 0.2297±0.0052±0.0018. Also, the AQobs measurement combined with the left-right cross section asymmetry determines Ae independent of the value of the electron-beam polarization.
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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 | 1997-01-06 |
| Rights |
Copyright (c) 1997 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.78.17
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.78.17
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