Publications (8)
Expected Limits on R-symmetric Processes at Project X
Ricky Fok
We investigate processes in the Minimal R-symmetric Standrad Model (MRSSM) with the expected limits from Project X. It is found that conversion provides the tig…
It is a Graviton! or maybe not
Ricky Fok, Carol Guimaraes, Randy Lewis +1
The discovery of Kaluza-Klein (KK) gravitons is a smoking gun of extra dimensions. Other scenarios, however, could give rise to spin-two resonances of a new strongly-coupled sector…
Four Generations, the Electroweak Phase Transition, and Supersymmetry
Ricky Fok, Graham D. Kribs
We calculate the strength of the electroweak phase transition in a supersymmetric model with four chiral generations. The additional chiral fermions (and scalar partners) lower the…
Geodesic and Contour Optimization Using Conformal Mapping
Ricky Fok, Aijun An, Xiaogong Wang
We propose a novel optimization algorithm for continuous functions using geodesics and contours under conformal mapping.The algorithm can find multiple optima by first following a…
μto e in R-symmetric Supersymmetry
Ricky Fok, Graham D. Kribs
We demonstrate that mu/e slepton mixing is significantly more restricted than previously thought within the already remarkably flavor-safe R-symmetric supersymmetric standard model…
Optimization assisted MCMC
Ricky Fok, Aijun An, Xiaogang Wang
Markov Chain Monte Carlo (MCMC) sampling methods are widely used but often encounter either slow convergence or biased sampling when applied to multimodal high dimensional distribu…
Spontaneous Symmetry Breaking in Neural Networks
Ricky Fok, Aijun An, Xiaogang Wang
We propose a framework to understand the unprecedented performance and robustness of deep neural networks using field theory. Correlations between the weights within the same layer…
Distinguishing `Higgs' Spin Hypotheses using gamma gamma and WW* Decays
John Ellis, Ricky Fok, Dae Sung Hwang +2
The new particle X recently discovered by the ATLAS and CMS Collaborations in searches for the Higgs boson has been observed to decay into gamma gamma, ZZ* and WW*, but its spin an…