Dan-di Wu

activity

19921998

collaborators

4 papers

hep-ph1998

Simple unitarity relations among charged current coupling constants

Dan-Di Wu

I suggest two new unitarity tests for the quark charged current coupling constants which are $(s inγ / s in α) = ζ$ , and $(s in 2 γ) / (s in 2 α) = - ((1 - ζ cos β)) / (cos β - ζ)$ where $ζ$ is a…

hep-ph1997

Exploring inconsistencies with the Cabibbo-Kobayashi-Maskawa model

Dan-Di Wu

A small upper-bound is obtained for the CP phase $δ$ in a CKM matrix, $∣ sin δ ∣ \leq 0.44$ based on CP independent data on $∣ V_{u b} / V_{c b} ∣$ alone. Potential inconsistencies with the…

hep-ph1995

Mass hierarchy and the spectrum of scalars

Dan-di Wu

We use the natural $S U (3) \times U (1)$ global symmetry of the gauge-fermion interaction sector of the standard model to discuss the fermion mass hierarchy problem. The $S U (3)$ sixte…

hep-ph1992

A Z' Model Which May Be Relevant to the New LEP Events

Dan-di Wu, Chung Kao

A multi-Higgs model with an extra neutral gauge boson ( $Z^{'}$ ) is introduced. One scalar Higgs boson ( $H_{2}$ ) in this model decays dominantly into a photon pair. The $Z^{'}$ decay to $μ^…