| Abstract 摘要 | We usually search for Beyond The Standard Model physics at colliders by using kinematics to distinguish new signals from Standard Model backgrounds. Using this strategy, the Large Hadron Collider has so far found no indications of Beyond the Standard physics. However,this conventional approach fails for “stealthy” new physics where the signal kinematics are similar to backgrounds. New stealthy physics can be constrained by performing precise measurements of the Standard Model. I will discuss two examples: in the first example I show that measurements of the top cross section can be used to set new limits on stops. In the second example, I will show that the spectrum of high mass Drell-Yan can be used to measure the energy dependence of electroweak gauge couplings for the first time, allowing for model-independent limits to be set on new electroweak states. |
