Leptophilic dark matter in gauged $L_{\mu}-L_{\tau}$ extension of MSSM

Understand

Positron excess upto energies $\sim$350 GeV has been observed by AMS-02 result and it is consistent with the positron excess observed by PAMELA upto 100 GeV.

• There is no observed excess of anti-protons over the expected CR background.
• We propose a leptophilic dark matter with an $U(1)_{L_{\mu}-L_{\tau}}$ gauge extension of MSSM.
• The dark matter is an admixture of the $L_{\mu}-L_{\tau}$ gaugino and fermionic partners of the extra $SU(2)$ singlet Higgs boson, which break the $L_{\mu}-L_{\tau}$ symmetry.