Two New Particles at 674 GeV and 2.84 TeV from String Theory Moduli Stabilization

In Type IIB string compactifications with stabilized Kähler moduli, the internal geometry determines the mass spectrum of Kaluza–Klein excitations. When the vacuum energy and moduli values are fixed by a dynamical selection mechanism, the Kaluza–Klein spectrum becomes predictive. Using stabilized moduli values derived from vacuum energy constraints, together with the Large Volume Scenario, the resulting string scale is 10 TeV. This leads to Kaluza–Klein excitations with masses of 674 GeV and 2.84 TeV. The masses are derived from string theory, while the quantum numbers—spin-5/2 color triplet and spin-2 electroweak triplet—are determined by a companion topological framework (QuEST) with truncation parameter k=12. The combined predictions are explicit and falsifiable.