Würzburg 2018 – scientific programme
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T: Fachverband Teilchenphysik
T 10: Higgs: Erweiterte Modelle I
T 10.2: Talk
Monday, March 19, 2018, 16:15–16:30, Z6 - HS 0.004
Searching for new light higgs bosons at the ILC — •Yan Wang1,2 and Jenny List1 — 1DESY, Hamburg, Germany — 2IHEP, Beijing, China
In many new physics models with additional Higgs sectors, e.g. 2HDM, NMSSM, there exist one or more light scalars h. Thereby, the coupling of such scalars to the Z boson can be small, as expected if the 125 GeV Higgs boson remains Standard-Model-like as measurements of uncertainties shrink. Light higgs bosons with suppressed couplings to the Z boson would in turn have escaped from the detection at LEP, due to LEP’s limited luminosity. With a factor 1000 higher luminosity and polarized beams, the International Linear Collider (ILC) is expected to have substantial discovery potential for such states. Furthermore, searching additional scalars at LEP and LHC are usually dependent on the model details, such as decay channels, so it is necessary to have a more general analysis with model-independent assumptions.
In this work, we perform a search for light scalars produced in association with the Z boson at the ILC with a center-of-mass energy of 250 GeV, using the full Geant4-based simulation of the ILD detector concept. For a model-independent consideration, the analysis is performed using the recoil technique, in particular with the Z boson decaying into a pair of muons. As a preliminary result, the ILC’s discovery and exclusion potential will be shown for different higgs masses between 10 and 115 GeV.