The sensitivity of LeHC to different models of “new physics ” has been studied, both for the resonance production and in the contact interaction approximation. Expected limits are compared for different running scenarios. Direct leptoquark production can be studied for masses up to about 2 TeV. For contact interaction models scales up to about 70 TeV can be explored. Significant improvement of existing limits is also expected for models with large extra dimensions. Effective Plank mass scales up to about 5.4 TeV can be probed. LeHC will be sensitive to the quark substructure of the order of 10 −19 m.
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