As the measurements of the mass of the Higgs boson and top quark become more accurate, either through better data or better models and methods to interpret the data the ovals in the images [0] [1] shown in the margin of the article become narrower. So far that narrowness tends to reduce the ovals overlap with the green area indicating a stable universe. But it has not ruled out a stable universe afaik.
For the most part continued measurements have increased the accuracy of the Higgs boson which is the horizontal aspect of the oval, but there have been improvements in the models and methods that have assisted in narrowing the top quark as wel.
While there might be better sources now, when I was following it more often, the authors of this paper [2] were the best source of tracking at least the top quark as that seemed to be a special topic of research for them.
