Solà, J. and López-Val, D. (2011) One-loop Higgs boson production at the Linear Collider within the general two-Higgs-doublet model: e+e− versus γγ. l nuovo cimento C, 34 (s1). pp. 57-67. ISSN 1826-9885
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Abstract
present an updated overview on the phenomenology of one-loop Higgs boson production at Linear Colliders within the general Two-Higgs-Doublet Model (2HDM). First we report on the Higgs boson pair production, and associated Higgs-Z boson production, at O(α3ew) from e+e− collisions. These channels furnish cross-sections in the range of 10–100 fb for √s = 0.5TeV and exhibit potentially large radiative corrections (|δr| ∼ 50%), whose origin can be traced back to the genuine enhancement capabilities of the triple Higgs boson self-interactions. Next we consider the loop-induced production of a single Higgs boson from direct γγ scattering. We single out sizable departures from the expected γγ → h rates in the Standard Model, which are again correlated to trademark dynamical features of the 2HDM—namely the balance of the non-standard Higgs/gauge, Higgs/fermion and Higgs self-interactions, which leads to sizable (destructive) interference effects. This pattern of quantum effects is unmatched in the MSSM, and could hence provide distinctive footprints of non-supersymmetric Higgs boson physics. Both calculations are revisited within a common, brought-to-date framework and include, in particular, the most stringent bounds from unitarity and flavor physics.
| Item Type: | Article |
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| Uncontrolled Keywords: | Electroweak interactions ; Extensions of electroweak Higgs Sector ; Electroweak radiative corrections |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 14 Apr 2020 16:23 |
| Last Modified: | 14 Apr 2020 16:23 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17627 |
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