Campbell, J., Frederix, R., Maltoni, F. and Tramontano, F. (2009) Next-to-leading-order predictions for t-channel single-top production at hadron colliders. Physical Review Letters, 102(18), (doi: 10.1103/PhysRevLett.102.182003) (PMID:19518862)
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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.102.182003
Abstract
We present the predictions at next-to-leading order (NLO) in the strong coupling for the single-top cross section in the t channel at the Tevatron and the LHC. Our calculation starts from the 2→3 Born amplitude gq→tb̅ q′, keeping the b-quark mass nonzero. A comparison is performed with a traditional NLO calculation of this channel based on the 2→2 Born process with a bottom quark in the initial state. In particular, the effect of using kinematic approximations and resumming logarithms of the form log(Q<sup>2</sup>/mb<sup>2</sup>) in the 2→2 process is assessed. Our results show that the 2→3 calculation is very well behaved and in substantial agreement with the predictions based on the 2→2 process.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Campbell, Dr John |
| Authors: | Campbell, J., Frederix, R., Maltoni, F., and Tramontano, F. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
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