Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
(2009) Physical Review Letters — Vol. 102, p. 182003 (2009)
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- Abstract
- (en) 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 g q -> t bbar q', keeping the b-quark mass non-zero. 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^2/m_b^2) 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. Comment: 5 pages, 5 figures. Updated results with more recent CTEQ6.6 PDF set. Included PDF uncertainties
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Campbell, J. M., Tramontano, F., Frederix, R., & Maltoni, F. (2009). Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders. Physical Review Letters, 102, 182003. https://doi.org/10.1103/PhysRevLett.102.182003 (Original work published 2009)