Artículos de revistas
New physics in double Higgs production at future e + e − colliders
Fecha
2019-05-01Registro en:
Journal of High Energy Physics, v. 2019, n. 5, 2019.
1029-8479
1126-6708
10.1007/JHEP05(2019)020
2-s2.0-85065228455
Autor
Universidade Estadual Paulista (Unesp)
Université Catholique de Louvain
Carleton University
Institución
Resumen
We study the effects of new physics in double Higgs production at future e + e − colliders. In the Standard Model the chiral limit (m e = 0) plays an important role for this process, being responsible for the smallness of the tree-level diagrams with respect to the 1-loop contributions. In our work, we consider the possibility of an enhancement due to the contribution of Standard Model dimension-six effective operators. We show that there are only two relevant operators for this process that are not yet (strongly) constrained by other data. We perform a sensitivity study on the operator coefficients for several benchmark values of energy and integrated luminosity related to the proposed linear colliders such as CLIC, ILC and FCC-ee and we derive expected 95% CL limits for each benchmark scenario.