Abbott, B. ; Narasimham, V. S. ; et., al (2000) Spin correlation in tt̅ production from pp̅ collisions at √s=1.8TeV Physical Review Letters, 85 (2). pp. 256-261. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v85/i2/p256_1
Related URL: http://dx.doi.org/10.1103/PhysRevLett.85.256
Abstract
The D0 collaboration has performed a study of spin correlation in tt̅ production for the process tt̅ →bW+b̅W-, where the W bosons decay to eν or μν. A sample of six events was collected during an exposure of the D0 detector to an integrated luminosity of approximately 125pb-1 of √s=1.8TeV pp̅ collisions. The standard model (SM) predicts that the short lifetime of the top quark ensures the transmission of any spin information at production to the tt̅ decay products. The degree of spin correlation is characterized by a correlation coefficient κ. We find that κ>-0.25 at the 68% confidence level, in agreement with the SM prediction of κ=0.88.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 36163 |
| Deposited On: | 02 May 2011 13:10 |
| Last Modified: | 02 May 2011 13:10 |
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