Theory Group Seminar

Dr. Peter Graham, Stanford University

"Dynamical Relaxation for Fine-Tuning Problems and Precision Measurement"

2:00pm, RLM 7.104

Abstract: A new class of solutions to the electroweak hierarchy problem is presented that does not require either weak scale dynamics or anthropics. Dynamical evolution during the early universe drives the Higgs mass to a value much smaller than the cutoff. The simplest model has the particle content of the standard model plus a QCD axion and an inflation sector. The highest cutoff achieved in any technically natural model is 10^8 GeV. This provides further motivation for precision measurement as a powerful new approach for particle physics. Sensitive technologies enable novel experiments for direct detection of dark matter and gravitational waves. Thus, precision measurement opens new avenues for probing the origin and composition of the universe.