8.4.2 Other Systematic Errors

In comparison to the errors from the jet scale, other potential sources of systematic error are relatively small. Some of these sources are listed below.

• The 4 GeV/ difference seen between and in Section 8.2 is taken as an estimate of the systematic error due to the event generator.

• As mentioned in Section 7.3, there are small offsets after the likelihood fit, with an upper limit of about 3--4 GeV/.

• The uncertainty due to the QCD fraction in the background is less than 2 GeV/ (Section 8.2).

• Other systematic errors, such as errors caused by folding all channels together and additional systematics in the background shape, are guessed to be .

Summed together in quadrature, these yield about 7.8 GeV/. Combined with the jet scale systematic error, this gives a total systematic error of about . If were used instead, the result would be .