Automated EW corrections with isolated photons : t t¯ γ, t t¯ γγ and tγj as case studies
(2021) In Journal of High Energy Physics 2021(9).- Abstract
In this work we compute for the first time the so-called Complete-NLO predictions for top-quark pair hadroproduction in association with at least one isolated photon (tt¯ γ). We also compute NLO QCD+EW predictions for the similar case with at least two isolated photons (tt¯ γγ) and for single-top hadroproduction in association with at least one isolated photon. In addition, we complement our results with NLO QCD+EW predictions of the hadronic and leptonic decays of top-quark including an isolated photon. All these results have been obtained in a completely automated approach, by extending the capabilities of the MadGraph5_aMC@NLO framework and enabling the Complete-NLO predictions for processes with isolated photons in the final state.... (More)
In this work we compute for the first time the so-called Complete-NLO predictions for top-quark pair hadroproduction in association with at least one isolated photon (tt¯ γ). We also compute NLO QCD+EW predictions for the similar case with at least two isolated photons (tt¯ γγ) and for single-top hadroproduction in association with at least one isolated photon. In addition, we complement our results with NLO QCD+EW predictions of the hadronic and leptonic decays of top-quark including an isolated photon. All these results have been obtained in a completely automated approach, by extending the capabilities of the MadGraph5_aMC@NLO framework and enabling the Complete-NLO predictions for processes with isolated photons in the final state. We discuss the technical details of the implementation, which involves a mixed EW renormalisation scheme for such processes.
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- author
- Pagani, Davide ; Shao, Hua Sheng ; Tsinikos, Ioannis LU and Zaro, Marco
- organization
- publishing date
- 2021-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- NLO Computations
- in
- Journal of High Energy Physics
- volume
- 2021
- issue
- 9
- article number
- 155
- publisher
- Springer
- external identifiers
-
- scopus:85116033669
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP09(2021)155
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021, The Author(s).
- id
- fac1db6f-6285-4c3b-b3d0-3c65e0a8df16
- date added to LUP
- 2021-10-13 14:55:54
- date last changed
- 2024-04-20 13:03:29
@article{fac1db6f-6285-4c3b-b3d0-3c65e0a8df16, abstract = {{<p>In this work we compute for the first time the so-called Complete-NLO predictions for top-quark pair hadroproduction in association with at least one isolated photon (tt¯ γ). We also compute NLO QCD+EW predictions for the similar case with at least two isolated photons (tt¯ γγ) and for single-top hadroproduction in association with at least one isolated photon. In addition, we complement our results with NLO QCD+EW predictions of the hadronic and leptonic decays of top-quark including an isolated photon. All these results have been obtained in a completely automated approach, by extending the capabilities of the MadGraph5_aMC@NLO framework and enabling the Complete-NLO predictions for processes with isolated photons in the final state. We discuss the technical details of the implementation, which involves a mixed EW renormalisation scheme for such processes.</p>}}, author = {{Pagani, Davide and Shao, Hua Sheng and Tsinikos, Ioannis and Zaro, Marco}}, issn = {{1029-8479}}, keywords = {{NLO Computations}}, language = {{eng}}, number = {{9}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Automated EW corrections with isolated photons : t t¯ γ, t t¯ γγ and tγj as case studies}}, url = {{http://dx.doi.org/10.1007/JHEP09(2021)155}}, doi = {{10.1007/JHEP09(2021)155}}, volume = {{2021}}, year = {{2021}}, }