Mr. Maxin builds phenomenology of string theory models of our universe, such as the one-parameter model, intersecting D6-brane models, and F-Theory. If string theory is to be proven correct, it must describe all the observable physics in our universe, so the goal is to use string theory configurations to describe observed physics, such as the Standard Model of particle physics. The one-parameter model is a generic description derived from multiple type string compactifications, including M-Theory, Type IIB "large volume models", and heterotic models. Intersecting D6-brane models arise when Type IIa string theory is compactified on a six-dimensional manifold, where stacks of wrapped D6-branes intersect at a finite number of points and open strings stretched between different stacks of intersecting branes at the intersection points are identified as the Standard Model particle content. The intersection of these stacks of D6-branes fill our four-dimensional space-time universe. The soft-supersymmetry breaking parameters (gaugino masses, scalar masses, trilinear coupling, tan(beta)) at the Grand Unification Scale (GUT) are calculated in the string models, then these soft terms are evolved down to the electroweak scale using the Renormalization Group Equations (RGE) to compute the low energy supersymmetric particle spectrum, Standard Model constraints, relic dark matter density in the universe, direct dark matter detection cross-sections, and galactic gamma-ray fluxes resulting from neutralino annihilations. A parameter space allowed by all the latest experimental constraints can now be formed so that the expected final states at the Large Hadron Collider (LHC) can be derived. From these LHC final states, kinematic observables can be constructed to determine the string theory model parameters at the GUT scale, hence, validating the model at LHC.
Publications:
A Note on Modulus-dominated SUSY-breaking
The Search for a Realistic String Model at LHC
Stringy WIMP Detection and Annihilation
Supergravity and Superstring Signatures of the One-Parameter Model at LHC
A complete list of Mr. Maxin's publications can be viewed on these two websites: arXiv and Spires
A list of publications from Mr. Maxin's research group is available here.
Presentations:
DOE (April 2005 DOE Task Review)
SIGN (Texas A&M March 2005 SRW)
Frozen Xenon (American Physical Society October 2004 Meeting at Baylor University)
Mr. Maxin is no longer engaged into research of experimental techniques for the search of Dark Matter.
