A global view on the Higgs self-coupling
Abstract The Higgs self-coupling is notoriously intangible at the LHC. It was recently proposed to probe the trilinear Higgs interaction through its radiative corrections to single-Higgs processes. This approach however requires to disentangle these effects from those associated to deviations of oth...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-09-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP09(2017)069 |
| _version_ | 1818944332968755200 |
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| author | S. Di Vita C. Grojean G. Panico M. Riembau T. Vantalon |
| author_facet | S. Di Vita C. Grojean G. Panico M. Riembau T. Vantalon |
| author_sort | S. Di Vita |
| collection | DOAJ |
| description | Abstract The Higgs self-coupling is notoriously intangible at the LHC. It was recently proposed to probe the trilinear Higgs interaction through its radiative corrections to single-Higgs processes. This approach however requires to disentangle these effects from those associated to deviations of other Higgs-couplings to fermions and gauge bosons. We show that a global fit exploiting only single-Higgs inclusive data suffers from degeneracies that prevent one from extracting robust bounds on each individual coupling. We show how the inclusion of double-Higgs production via gluon fusion, and the use of differential measure-ments in the associated single-Higgs production channels W H, ZH and ttH, can help to overcome the deficiencies of a global Higgs-couplings fit. In particular, we bound the vari-ations of the Higgs trilinear self-coupling relative to its SM value to the interval [0.1, 2.3] at 68% confidence level at the high-luminosity LHC, and we discuss the robustness of our results against various assumptions on the experimental uncertainties and the underlying new physics dynamics. We also study how to obtain a parametrically enhanced deviation of the Higgs self-couplings and we estimate how large this deviation can be in a self-consistent effective field theory framework. |
| first_indexed | 2024-12-20T07:41:33Z |
| format | Article |
| id | doaj.art-0afdc544279f4339aa216158a2db5d5d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-20T07:41:33Z |
| publishDate | 2017-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-0afdc544279f4339aa216158a2db5d5d2022-12-21T19:48:06ZengSpringerOpenJournal of High Energy Physics1029-84792017-09-012017914210.1007/JHEP09(2017)069A global view on the Higgs self-couplingS. Di Vita0C. Grojean1G. Panico2M. Riembau3T. Vantalon4DESYDESYIFAE, Barcelona Institute of Science and Technology (BIST) Campus UABDESYDESYAbstract The Higgs self-coupling is notoriously intangible at the LHC. It was recently proposed to probe the trilinear Higgs interaction through its radiative corrections to single-Higgs processes. This approach however requires to disentangle these effects from those associated to deviations of other Higgs-couplings to fermions and gauge bosons. We show that a global fit exploiting only single-Higgs inclusive data suffers from degeneracies that prevent one from extracting robust bounds on each individual coupling. We show how the inclusion of double-Higgs production via gluon fusion, and the use of differential measure-ments in the associated single-Higgs production channels W H, ZH and ttH, can help to overcome the deficiencies of a global Higgs-couplings fit. In particular, we bound the vari-ations of the Higgs trilinear self-coupling relative to its SM value to the interval [0.1, 2.3] at 68% confidence level at the high-luminosity LHC, and we discuss the robustness of our results against various assumptions on the experimental uncertainties and the underlying new physics dynamics. We also study how to obtain a parametrically enhanced deviation of the Higgs self-couplings and we estimate how large this deviation can be in a self-consistent effective field theory framework.http://link.springer.com/article/10.1007/JHEP09(2017)069Beyond Standard ModelEffective Field TheoriesHiggs Physics |
| spellingShingle | S. Di Vita C. Grojean G. Panico M. Riembau T. Vantalon A global view on the Higgs self-coupling Journal of High Energy Physics Beyond Standard Model Effective Field Theories Higgs Physics |
| title | A global view on the Higgs self-coupling |
| title_full | A global view on the Higgs self-coupling |
| title_fullStr | A global view on the Higgs self-coupling |
| title_full_unstemmed | A global view on the Higgs self-coupling |
| title_short | A global view on the Higgs self-coupling |
| title_sort | global view on the higgs self coupling |
| topic | Beyond Standard Model Effective Field Theories Higgs Physics |
| url | http://link.springer.com/article/10.1007/JHEP09(2017)069 |
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