4 papers
Search for a fourth generation b'-quark at LEP-II at sqrt{s}=196-209 GeV
The DELPHI Collaboration, J. Abdallah
A search for the pair production of fourth generation b'-quarks was performed using data taken by the DELPHI detector at LEP-II. The analysed data were collected at centre-of-mass…
Forward-Backward Charge Asymmetry at Very High Energies
B. I. Ermolaev, M. Greco, S. M. Oliveira +1
The impact of the electroweak radiative corrections on the value of the forward-backward asymmetry in e^+ e^- annihilation into a quark-antiquark pair is considered in the double-l…
Double-logarithmic (Sudakov) asymptotics at the theory of electroweak interactions
B. I. Ermolaev, M. Greco, S. M. Oliveira +1
Accounting for double-logarithmic contributions to high-energy (>> 100 GeV) e^+ e^- annihilation into a quark or a lepton pair in the kinematics where the final particles are colin…
Mass Terms in Two-Higgs Doublet Models
R. Santos, S. M. Oliveira, A. Barroso
We take a closer look at the mass terms of all renormalizable and CP conserving two-Higgs doublet models (THDM). We show how some of the dimension two parameters in the potential c…