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Collider probes of singlet fermionic dark matter scenarios for the Fermi gamma-ray excess

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Title
Collider probes of singlet fermionic dark matter scenarios for the Fermi gamma-ray excess
Author(s)
Yeong Gyun Kim; Chan Beom Park; Seodong Shin
Publication Date
2018-12
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v.2018, no.12, pp.36 -
Publisher
SPRINGER
Abstract
We investigate the collider signatures of three benchmark points in the singlet fermionic dark matter model motivated by the Fermi gamma-ray excess at the Galactic center. The benchmark points are classified according to the final state of the main dark annihilation process: a pair of b quarks, Higgs bosons and new scalar bosons. Since the dark sector in the model communicates with the visible sector through a mixing between the new scalar and the Higgs boson, collider observables related to the measurements of Higgs boson properties and searches for the new scalar boson are essential to probe the benchmark scenarios at colliders. In this paper, we consider four collider observables: (1) Higgs signal strength (essentially hZZ coupling), (2) triple Higgs coupling, (3) exotic Higgs decay, and (4) direct production of the new scalar particle. We find that the benchmark points have distinctive collider signatures that can be well tested by the interplay of future lepton and hadron colliders. © 2018, The Author(s)
URI
https://pr.ibs.re.kr/handle/8788114/5381
ISSN
1029-8479
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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