Next-to-leading-order predictions for t-channel single-top production at hadron colliders
(2009) In Physical Review Letters 102(18).- 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→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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/a05ff455-dc8a-40b6-ad0a-42a6a909b168
- author
- Campbell, J. M. ; Frederix, R. LU ; Maltoni, F. and Tramontano, F.
- publishing date
- 2009-05-08
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 102
- issue
- 18
- article number
- 182003
- publisher
- American Physical Society
- external identifiers
-
- scopus:65549086945
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.102.182003
- language
- English
- LU publication?
- no
- id
- a05ff455-dc8a-40b6-ad0a-42a6a909b168
- date added to LUP
- 2019-05-28 15:03:56
- date last changed
- 2022-02-15 20:17:07
@article{a05ff455-dc8a-40b6-ad0a-42a6a909b168, abstract = {{<p>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.</p>}}, author = {{Campbell, J. M. and Frederix, R. and Maltoni, F. and Tramontano, F.}}, issn = {{0031-9007}}, language = {{eng}}, month = {{05}}, number = {{18}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Next-to-leading-order predictions for t-channel single-top production at hadron colliders}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.102.182003}}, doi = {{10.1103/PhysRevLett.102.182003}}, volume = {{102}}, year = {{2009}}, }