Speaker
Description
We study the production of color-neutral and singly-charged heavy leptons at the proposed International Linear Collider. We use the optimal observable technique to determine the statistical accuracy to which the coupling of such fermions to the Z gauge boson (vector, axial or chiral) can be measured in case of signal-only hypothesis as well as in presence of non-interfering SM background. A UV-complete model that contains these particles, as well as a dark matter candidate, is used for illustration to yield opposite sign leptons (OSL) plus missing energy ($E_{miss}$) as our final state signal. We demonstrate how the uncertainties to extract NP couplings optimally are changed depending on the background contamination. As an example, the effect of judicious cuts on kinematic variables like missing energy ($E_{miss}$) that segregate the signal from SM background, to optimal uncertainty of NP couplings are demonstrated.
| Session | Beyond the Standard Model |
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