Search for a light radion at HL-LHC and ILC250

Abstract

With the data collected by LHC at 13 TeV, the CMS collaboration has searched for low mass resonances decaying into two photons. This has resulted in the observation of 3 sd excess around 95 GeV, reminiscent of an indication obtained at LEP2 by combining the Higgs boson searches of the four LEP experiments. These observations, marginally significant, motivate the present study which shows how HL-LHC and ILC250 could search for a radion, the lightest new particle predicted within the Randall Sundrum (RS) model. ILC operating at a centre of mass energy of 250 GeV and with an integrated luminosity surpassing LEP2 by three orders of magnitude, could become the ideal machine to study a light radion and to observe, with very high accuracy, how it mixes with the Higgs boson and modifies the various couplings.

arXiv comment13 pages, 13 figures

References in corpus (8)

• Higgs Bosons at 98 and 125 GeV at LEP and the LHC
• Implications of the absence of high-mass radion signals
• Warped Electroweak Breaking Without Custodial Symmetry
• 5D Perspective on Higgs Production at the Boundary of a Warped Extra Dimension
• Higgs boson phenomenology and VEV shift in the RS scenario
• Higgs Decay into Two Photons at the Boundary of a Warped Extra Dimension
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Cited by in corpus (8)

• A 96 GeV Higgs Boson in the N2HDM
• Unveiling Hidden Physics at the LHC
• Light Higgs bosons in the general NMSSM
• The semi-constrained NMSSM in light of muon g-2, LHC, and dark matter constraints
• The "96 GeV excess" at the LHC
• Discussing 125 GeV and 95 GeV excess in Light Radion Model
• Indications for extra scalars at LHC? -- BSM physics at future $e^{+}{e}^{-}$ colliders
• An N2HDM Solution for the possible 96 GeV Excess