α decay of even-even superheavy elements

The alpha-decay half-lives of even-even superheavy elements within the range of proton number 104 <= Z <= 126, which can be formed by possible cold and hot fusion reactions, are calculated in the framework of various approaches for alpha-decay half-life evaluation and by using the Q values of alpha transitions obtained within different approximations for atomic masses. The dependencies of alpha-decay half-lives of superheavy elements on model approaches for both the Q values and half-life calculations are discussed in detail.