130 citations · 964 across the 49 of their papers we have counts for
6 papers · 1 filter
CP asymmetry in the Higgs decay into the top pair due to the stop mixing
Fred Browning, Darwin Chang, Wai-Yee Keung
We investigate a potentially large CP violating asymmetry in the decay of a neutral scalar or pseudoscalar Higgs boson into the top-anti-top pair. The source of the CP nonconservat…
The effects of spin fluctuations on the tunneling spectroscopy in High-T_c Superconductors
C. L. Wu, Chung-Yu Mou, Darwin Chang
We investigate the effects of spin fluctuations on the tunneling spectra of the NS junction. In the high junction resistance limit, the dip/hump structure observed in ARPES data fo…
Challenges in Hyperon Decays
Darwin Chang
We give an personal overview of some of the unsolved problems related to hyperon decays. We cover nonleptonic decays, radiative decays and magnetic moments. Some of the theoretical…
Large Two-Loop Contributions to g-2 from a Generic Pseudoscalar Boson
Darwin Chang, We-Fu Chang, Chung-Hsien Chou +1
We calculate the dominant contributions to the muon at the two-loop level due to a generic pseudoscalar boson that may exist in any exotic Higgs sector in most extensions of…
Large CP violation in radiative B decays in supersymmetry without R-parity
Gautam Bhattacharyya, Darwin Chang, Chung-Hsien Chou +1
We demonstrate that the R-parity breaking interactions within their current experimental upper bounds can give rise to large mixing-induced CP asymmetry in exclusive radiative B de…
The Neutron Electric Dipole Moment and CP-violating Couplings in the Supersymmetric Standard Model without R-parity
Darwin Chang, We-Fu Chang, Mariana Frank +1
We analyze the neutron electric dipole moment (EDM) in the Minimal Supersymmetric Model with explicit R-parity violating terms. The leading contribution to the EDM occurs at the 2-…