LHC Signature of Mirage Mediation


Abstract in English

We study LHC phenomenology of mirage mediation scenario in which anomaly and modulus contributions to soft SUSY breaking terms are comparable to each other. A Monte Carlo study of mirage mediation, with model parameters $alpha=1$,$ M_0=500$ GeV, $n_M=1/2$, $n_H=1$ and $rm{tan}beta=10$, is presented. It is shown that masses of supersymmetric particles can be measured in a model independent way, providing information on SUSY breaking sector. In particular, the mass ratio of gluino to the lightest neutralino for the benchmark scenario is determined to be $1.9 lesssim m_{tildeg}/m_{tildechi_1^0} lesssim 3.1$, well reproducing theoretical input value of $m_{tilde g}/m_{tildechi_1^0} simeq 2.5$ which is quite distinctive from the predictions $m_{tilde g}/m_{tildechi_1^0} gtrsim 6$ of other SUSY scenarios in which gaugino masses are unified at the GUT scale. The model parameters of mirage mediation can be also determined from various kinematic distributions.

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