Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders

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 perfor...

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Detalles Bibliográficos
Autores principales: Campbell, John M, Frederix, Rikkert, Maltoni, Fabio, Tramontano, Francesco
Lenguaje:eng
Publicado: 2009
Materias:
Accelerators and Storage Rings
hep-ph
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.102.182003
http://cds.cern.ch/record/1164457
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author Campbell, John M
Frederix, Rikkert
Maltoni, Fabio
Tramontano, Francesco
author_facet Campbell, John M
Frederix, Rikkert
Maltoni, Fabio
Tramontano, Francesco
author_sort Campbell, John M
collection CERN
description 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.
id cern-1164457
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
record_format invenio
spelling cern-11644572019-09-30T06:29:59Zdoi:10.1103/PhysRevLett.102.182003http://cds.cern.ch/record/1164457engCampbell, John MFrederix, RikkertMaltoni, FabioTramontano, FrancescoNext-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron CollidersAccelerators and Storage Ringshep-phWe 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.arXiv:0903.0005oai:cds.cern.ch:11644572009-03-03
spellingShingle Accelerators and Storage Rings
hep-ph
Campbell, John M
Frederix, Rikkert
Maltoni, Fabio
Tramontano, Francesco
Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
title Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
title_full Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
title_fullStr Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
title_full_unstemmed Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
title_short Next-to-Leading-Order Predictions for t-Channel Single-Top Production at Hadron Colliders
title_sort next-to-leading-order predictions for t-channel single-top production at hadron colliders
topic Accelerators and Storage Rings
hep-ph
url https://dx.doi.org/10.1103/PhysRevLett.102.182003
http://cds.cern.ch/record/1164457
work_keys_str_mv AT campbelljohnm nexttoleadingorderpredictionsfortchannelsingletopproductionathadroncolliders
AT frederixrikkert nexttoleadingorderpredictionsfortchannelsingletopproductionathadroncolliders
AT maltonifabio nexttoleadingorderpredictionsfortchannelsingletopproductionathadroncolliders
AT tramontanofrancesco nexttoleadingorderpredictionsfortchannelsingletopproductionathadroncolliders

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