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Exploring extended scalar sectors with di-Higgs signals: a Higgs EFT perspective.
- Source :
- Journal of High Energy Physics; May2018, Vol. 2018 Issue 5, p1-1, 1p
- Publication Year :
- 2018
-
Abstract
- We consider extended scalar sectors of the Standard Model as ultraviolet complete motivations for studying the effective Higgs self-interaction operators of the Standard Model effective field theory. We investigate all motivated heavy scalar models which generate the dimension-six effective operator, |H|<superscript>6</superscript>, at tree level and proceed to identify the full set of tree-level dimension-six operators by integrating out the heavy scalars. Of seven models which generate |H|<superscript>6</superscript> at tree level only two, quadruplets of hypercharge Y = 3Y<subscript>H</subscript> and Y = Y<subscript>H</subscript>, generate only this operator. Next we perform global fits to constrain relevant Wilson coefficients from the LHC single Higgs measurements as well as the electroweak oblique parameters S and T. We find that the T parameter puts very strong constraints on the Wilson coefficient of the |H|<superscript>6</superscript> operator in the triplet and quadruplet models, while the singlet and doublet models could still have Higgs self-couplings which deviate significantly from the standard model prediction. To determine the extent to which the |H|<superscript>6</superscript> operator could be constrained, we study the di-Higgs signatures at the future 100 TeV collider and explore future sensitivity of this operator. Projected onto the Higgs potential parameters of the extended scalar sectors, with 30 ab<superscript>−1</superscript> luminosity data we will be able to explore the Higgs potential parameters in all seven models. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11266708
- Volume :
- 2018
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- 130230741
- Full Text :
- https://doi.org/10.1007/JHEP05(2018)061