Light scalar production from Higgs bosons and FASER 2

Light scalar production from Higgs bosons and FASER 2

Abstract The most general renormalizable interaction between the Higgs sector and a new gauge-singlet scalar S is governed by two interaction terms: cubic and quartic. The quartic term is only loosely constrained by invisible Higgs decays and given current experimental limits about 10% of all Higgs...

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Bibliographic Details
Main Authors: Iryna Boiarska, Kyrylo Bondarenko, Alexey Boyarsky, Maksym Ovchynnikov, Oleg Ruchayskiy, Anastasia Sokolenko
Format: Article
Language:English
Published: SpringerOpen 2020-05-01
Series:Journal of High Energy Physics
Subjects:
Beyond Standard Model
Higgs Physics
Online Access:http://link.springer.com/article/10.1007/JHEP05(2020)049
Description
Summary:Abstract The most general renormalizable interaction between the Higgs sector and a new gauge-singlet scalar S is governed by two interaction terms: cubic and quartic. The quartic term is only loosely constrained by invisible Higgs decays and given current experimental limits about 10% of all Higgs bosons at the LHC can be converted to new scalars with masses up to m Higgs /2. By including this production channel, one significantly extends the reach of the LHC-based Intensity Frontier experiments. We analyze the sensitivity of the FASER experiment to this model and discuss modest changes in the FASER 2 design that would allow exploring an order-of-magnitude wider part of the Higgs portal’s parameter space.
ISSN:1029-8479

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