![quark definition quark definition](https://d1whtlypfis84e.cloudfront.net/guides/wp-content/uploads/2020/12/10194113/Quark.png)
It is therefore of paramount importance determining m t at the LHC with the highest possible precision, estimating reliably all sources of uncertainty and eventually interpreting the results in terms of field-theory mass definitions.
![quark definition quark definition](https://material-properties.org/wp-content/uploads/2019/05/what-are-quarks-matter.png)
, to the point of even moving the vacuum position inside the stability or instability regions. For instance, possible changes of the central value or of the uncertainty on m t may affect the results in Degrassi et al. In such calculations, one typically assumes that the measured top-quark mass, whose current world average reads m t = GeV, corresponds to the pole mass and eventually adds errors of the order of few hundreds MeV to account for possible deviations from this identification. , part of the uncertainty is related to the top-quark mass.
![quark definition quark definition](https://study.com/cimages/videopreview/a3buy2yeax.jpg)
Also, in the determination of the lifetime of the Universe, undertaken in Andreassen et al. It plays a role in Higgs inflation model (see for some recent work on the subject), while the property of the electroweak vacuum to lie on the boundary between stability and metastability regimes does depend on the actual values and definitions of top and Higgs masses used in the computation 1. The mass of the top quark is a fundamental parameter of the Standard Model, since it enters in the electroweak precision tests and constrained the mass of the Higgs boson even before its discovery at the LHC.