High-energy physics

Search for Surviving Companions in Type Ia Supernova Remnants
The nature of the progenitor systems of type Ia supernovae (SNe Ia) is still unclear. One way to distinguish between the single-degenerate scenario and double-degenerate scenario for their progenitors is to search for the surviving companions (SCs). Using a technique that couples the results from multi-dimensional hydrodynamics simulations with calculations of the structure and evolution of main-sequence- (MS-) and helium-rich SCs, the color and magnitude of MS- and helium-rich SCs are predicted as functions of time.
Researchers create enormous simulation of proton collisionsDecember 12, 2014

Scientists from Argonne and the University of Chicago have created one of the world's largest samples of Monte Carlo simulated proton-proton collisions. The data sample contains 400 million events, each of which contains 5500 particles on average, totaling more than 2 trillion generated particles.

Off-shell Effects and the Higgs Width
There has been a great deal of recent interest in the off-shell properties of the Higgs boson in VV decays, and in particular, the extraction of Higgs width constraints from off-shell measurements. I will review the theoretical background to these measurements in the inclusive and one-jet cases. I will discuss the theoretical uncertainties in the off-shell region, and the ongoing work to extend the calculations to next-to-leading order. I will also discuss the model dependence of using these methods to bound the Higgs width.

Collider Searches for Dark Matter
We review the status of the WIMP miracle and present mono-jet/dijet bounds in the context of simplified dark matter models. We exploit the complementarity among mono-jet, dijet, direct and indirect dark matter detection constraints.