Summary of Tevatron Top Mass Results - July 2011

Summary of the Tevatron top mass measurements and their combination as of July 2011. We combine published results from Run-I (1992-1996) with the most recent preliminary and published Run-II (2001-present) measurements using up to 5.8 fb-1 of data. Taking correlated uncertainties properly into account the resulting preliminary Tevatron average mass of the top quark is

Mtop = 173.18 ± 0.56 (stat) ± 0.76 (syst) GeV/c2

or summing the statistical and systematical uncertainties in quadrature

Mtop = 173.2 ± 0.9 (syst) GeV/c2

which corresponds to a relative uncertainty of 0.54%.

More information can be found in arXiv:1107.5255.

References about the individual analyses contributing to this combination can be found from the CDF public page and D0 public page.

Previous July 2010 combination webpage and arxiv document

The weight each analysis carries in the Tevatron combination is shown here.