Collaboration, D;
Abbott, B;
(2000)
Spin Correlation in tt-bar Production from pp-bar Collisions at sqrt(s)=1.8 TeV.
Physical Review Letters
, 85
(2)
256 - 261.
10.1103/PhysRevLett.85.256.
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Abstract
The D0 collaboration has performed a study of spin correlation in tt-bar production for the process tt-bar to bb-bar W^+W^-, where the W bosons decay to e-nu or mu-nu. A sample of six events was collected during an exposure of the D0 detector to an integrated luminosity of approximately 125 pb^-1 of sqrt{s}=1.8 TeV pp-bar 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 tt-bar decay products. The degree of spin correlation is characterized by a correlation coefficient k. We find that k>-0.25 at the 68% confidence level, in agreement with the SM prediction of k=0.88.
| Type: | Article |
|---|---|
| Title: | Spin Correlation in tt-bar Production from pp-bar Collisions at sqrt(s)=1.8 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.85.256 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.85.256 |
| Language: | English |
| Additional information: | © 2000 The American Physical Society. Submitted to PRL, Added references, minor changes to text |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1374203 |
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