53 citations · 161 across the 6 of their papers we have counts for
7 papers · 1 filter
Ansatz for small FCNC with a non-universal
Xiao-Gang He, German Valencia
It is well known that a non-universal induces tree-level FCNC which are severely constrained by experiment, most notably meson mixing. We point out that there is a class…
Probing New Physics in Charm Couplings with FCNC
Xiao-Gang He, Jusak Tandean, G. Valencia
Low-energy experiments involving kaon, B-meson, D-meson, and hyperon flavor-changing neutral transitions have confirmed the loop-induced flavor-changing neutral current (FCNC) pict…
T-odd correlations from CP violating anomalous top-quark couplings revisited
Oleg Antipin, G. Valencia
We revisit the effect of CP violating anomalous top-quark couplings in production and decay. We consider production through gluon fusion (and light $q{\bar q}…
mixing constraints on FCNC with a non-universal
Xiao-Gang He, German Valencia
The BaBar and Belle collaborations have recently reported evidence for mixing. This measurement provides the first significant constraint on FCNC in the up-quark sec…
The role of in
Oleg Antipin, G. Valencia
The BaBar collaboration has recently reported the observation of the decay mode . We investigate the role played by the resonances in this de…
Has HyperCP Observed a Light Higgs Boson?
Xiao-Gang He, Jusak Tandean, G. Valencia
The HyperCP collaboration has observed three events for the decay Sigma^+ -> p mu^+ mu^- which may be interpreted as a new particle of mass 214.3 MeV. However, existing data from k…