Felix Yu

Parameter Space of General Gauge Mediation

We study a subspace of General Gauge Mediation (GGM) models which generalize models of gauge mediation. We find superpartner spectra that are markedly different from those of typical gauge and gaugino mediation scenarios. While typical gauge mediation predictions of either a neutralino or stau next-to-lightest supersymmetric particle (NLSP) are easily reproducible with the GGM parameters, chargino and sneutrino NLSPs are generic for many reasonable choices of GGM parameters.

Measuring CP violation in

We investigate the LHC and Higgs Factory prospects for measuring the CP phase in the Higgs-tau-tau coupling. Currently this phase can be anywhere between 0 degrees (CP even) and 90 degrees (CP odd). A new, ideal observable is identified from an analytic calculation for the

h \to \tau^+ \tau^-

\tau^\pm \to \rho^\pm\nu \to \pi^\pm \pi^0 \nu

at colliders

channel. It is demonstrated to have promising sensitivity at the LHC and superior sensitivity at the ILC compared to previous proposals. Our observable requires the reconstruction of the internal substructure of decaying taus but does not rely on measuring the impact parameter of tau decays. It is the first proposal for such a measurement at the LHC. For the 14 TeV LHC, we estimate that about 1 ab

A new method for resolving combinatorial ambiguities at hadron colliders

^{-1}

Measuring slepton masses and mixings at the LHC

data can discriminate CP-even versus CP-odd at the

Anatomizing Exotic Production of the Higgs Boson

5\sigma

Collider signals of maximal flavor violation : Same-sign leptons from same-sign top quarks at the Fermilab Tevatron

level. With 3 ab

SPICE: Simulation Package for Including Flavor in Collider Events☆

^{-1}

A Viable Flavor Model for Quarks and Leptons in RS with T′ Family Symmetry

, the CP phase should be measurable to an accuracy of