Particle physics models with Peccei-Quinn (PQ) symmetry breaking as a consequence of supersymmetry (SUSY) breaking are attractive in that they solve the strong CP problem with a SUSY DFSZ-like axion, link the SUSY breaking and PQ breaking intermediate mass scales and can resolve the SUSY $\mu$ problem with a naturalness-required weak scale $\mu$ term whilst soft SUSY breaking terms inhabit the...
We propose that the $\gamma + {\not E}$ signal at the Belle-II detector will be a smoking gun for supersymmetry (SUSY) in the presence of a gauged $U(1)_{L_\mu - L_\tau}$ symmetry. A striking consequence of breaking the enhanced symmetry appearing in the limit of degenerate (s)leptons is the non-decoupling of the
radiative contribution of heavy charged sleptons to the $\gamma - Z^\prime$...
Douglas introduced the notion of stringy naturalness: the value of an
observable in string theory is more natural if more phenomenologically acceptable
landscape vacua lead to its value versus some other value.
I compare this notion of naturalness to other conventional measures. Stringy
naturalness applied to the electroweak scale seems to imply a Higgs mass
mh~125 GeV with all sparticles...
