title: Maximally natural supersymmetry.
abstract: We consider 4D weak scale theories arising from 5D supersymmetric (SUSY) theories with maximal Scherk-Schwarz breaking at a Kaluza-Klein scale of several TeV. Many of the problems of conventional SUSY are avoided. Apart from 3rd family sfermions the SUSY spectrum is heavy, with only ∼50% tuning at a gluino mass of ∼2  TeV and a stop mass of ∼650  GeV. A single Higgs doublet acquires a vacuum expectation value, so the physical Higgs boson is automatically standard-model-like. A new U(1)^{'} interaction raises m_{h} to 126 GeV. For minimal tuning the associated Z^{'}, as well as the 3rd family sfermions, must be accessible to LHC13. A gravitational wave signal consistent with hints from BICEP2 is possible if inflation occurs when the extra dimensions are small.
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: Savas
authors.initials: S
authors.lastname: Dimopoulos
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA and SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: Kiel
authors.initials: K
authors.lastname: Howe
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA and Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Rd., Oxford OX1 3NP, United Kingdom.
authors.forename: John
authors.initials: J
authors.lastname: March-Russell