# Two-Higgs Models for Large $$\tan \beta$$ and Heavy Second Higgs

 Title: Two-Higgs Models for Large $$\tan \beta$$ and Heavy Second Higgs Author: Randall, Lisa Citation: Randall, Lisa. 2008. Two-Higgs models for large $$\tan \beta$$ and heavy second Higgs. Journal of High Energy Physics 2008(2): 84. Full Text & Related Files: 0711.4360v2.pdf (195.9Kb; PDF) Abstract: We study two-Higgs models for large $$\tan \beta$$ and relatively large second Higgs mass. In this limit the second heavy Higgs should have small vev and therefore couples only weakly to two gauge bosons. Furthermore, the couplings to down-type quarks can be significantly modified (so long as the second Higgs is not overly heavy). Both these facts have significant implications for search strategies at the LHC and ILC. We show how an effective theory and explicit fundamental two-Higgs model approach are related and consider the additional constraints in the presence of supersymmetry or $$Z_2$$ flavor symmetries. We argue that the best tests of the two-Higgs doublet potential are likely to be measurements of the light Higgs branching fractions. We show how higher dimension operators that have recently been suggested to raise the light Higgs mass are probably best measured and distinguished in this way. Published Version: doi:10.1088/1126-6708/2008/02/084 Other Sources: http://arxiv.org/abs/0711.4360 Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:8052099

### This item appears in the following Collection(s)

• FAS Scholarly Articles [7470]
Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University