New physics in double Higgs production at future e+e− colliders
(2019) Journal of High Energy Physics — Vol. 2019, n° 5, p. 20 (2019)
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- Abstract
- We study the effects of new physics in double Higgs production at future e+e− colliders. In the Standard Model the chiral limit (m𝑒 = 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.
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Citations
Vasquez, A., Degrande, C., Tonero, A., & Rosenfeld, R. (2019). New physics in double Higgs production at future e+e− colliders. Journal of High Energy Physics, 2019(5), 20. https://doi.org/10.1007/jhep05(2019)020 (Original work published 2019)