Relaxion and light (pseudo)scalars at the HL-LHC and lepton colliders

A bstract We study the potential of future lepton colliders, running at the Z -pole and above, and the High-Luminosity LHC to search for the relaxion and other light scalars ϕ . We investigate the interplay of direct searches and precision observables for both C P -even and -odd couplings. In partic...

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Published inThe journal of high energy physics Vol. 2018; no. 10; pp. 1 - 35
Main Authors Frugiuele, Claudia, Fuchs, Elina, Perez, Gilad, Schlaffer, Matthias
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2018
Springer Nature B.V
SpringerOpen
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Summary:A bstract We study the potential of future lepton colliders, running at the Z -pole and above, and the High-Luminosity LHC to search for the relaxion and other light scalars ϕ . We investigate the interplay of direct searches and precision observables for both C P -even and -odd couplings. In particular, precision measurements of exotic Z -decays, Higgs couplings, the exotic Higgs decay into a relaxion pair and associated Zϕ and γϕ production are promising channels to yield strong bounds.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP10(2018)151