Mirage models confront the LHC: Kahler-stabilized heterotic string theory

作者：Kaufman Bryan L^*; Nelson Brent D; Gaillard Mary K

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2013, 88(2): 025003.

DOI：10.1103/PhysRevD.88.025003

We begin the study of a class of string-motivated effective supergravity theories in light of current data from the CERN Large Hadron Collider (LHC). The case of heterotic string theory, in which the dilaton is stabilized via nonperturbative corrections to the Kahler metric, will be considered first. The model, which represents the strong dynamics of a presumed gaugino condensation in the hidden sector, is highly constrained and therefore predictive. We find that much of the parameter space associated with confined hidden sector gauge groups up to rank five is now observationally disfavored by the LHC results. Most of the theoretically motivated parameter space that remains can be probed with data that has already been collected, and most of the remainder will be definitively explored within the first year of operation at root s = 13 TeV. Expected signatures for a number of benchmark points are discussed. We find that the surviving space of the model makes a precise prediction as to the relation of many superpartner masses, as well as the manner in which the correct dark matter relic density is obtained. Implications for current and future dark matter search experiments are discussed.

• 出版日期2013-7-1
• 单位东北大学