Measurement of the Charged Multiplicity of Z0→bb¯ Events
Physical Review Letters Volume 72 Issue 20
Page 3145-3149
published_at 1994-05-16
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| File | |
| Title ( eng ) |
Measurement of the Charged Multiplicity of Z0→bb¯ Events
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| Creator |
SLD Collaboration
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| Source Title |
Physical Review Letters
|
| Volume | 72 |
| Issue | 20 |
| Start Page | 3145 |
| End Page | 3149 |
| Abstract |
Using an impact parameter tag to select an enriched sample of Z0→bb¯ events, we have measured the difference between the average charged multiplicity of Z0→bb¯ and Z0→ hadrons to be n¯b-n¯had=2.24±0.30 ( stat )±0.33 ( syst ) tracks per event. From this, we have derived n¯b-n¯uds=3.31±0.41±0.79. Comparing this measurement with those at lower center-of-mass energies, we find no evidence that n¯b-n¯uds depends on energy. This result is in agreement with a precise prediction of perturbative QCD, and supports the notion that QCD remains asymptotically free down to the scale Mb2.
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 1994-05-16 |
| Rights |
Copyright (c) 1994 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.72.3145
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.72.3145
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