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Photo of Rikkert Frederix

Rikkert Frederix

Senior lecturer

Photo of Rikkert Frederix

Next-to-leading-order predictions for t-channel single-top production at hadron colliders

Author

  • J. M. Campbell
  • R. Frederix
  • F. Maltoni
  • F. Tramontano

Summary, in English

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→tb̄q′, 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 (Q2/mb2) 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.

Publishing year

2009-05-08

Language

English

Publication/Series

Physical Review Letters

Volume

102

Issue

18

Document type

Journal article

Publisher

American Physical Society

Topic

  • Other Physics Topics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0031-9007