Abstract:

In this talk, I will discuss two aspects of the left-right twin Higgs model, one from model building and one from phenomenology. From the model building side, it is shown that the fine tuning can be improved by introducing a tree level quartic coupling that preserve twin parity. From

phenomenology side, it was pointed out that although many LHC-hopeful

signatures are predicted by the model, these signatures disappear if one

particular parameter in the model is set to zero. I will discuss this special case with the assumption of relatively light right handed

neutrino.