Report of the 'Beyond the Standard Model' working group of the 1999 UK Phenomenology Workshop on Collider Physics (Durham) 2. Naturalness reach of the large hadron collider in mSUGRA

We re-analyse the best supergravity (SUGRA) discovery channel at the LHC, i n order to re-express coverage in terms of a fine-tuning parameter and to e xtend the analysis to higher m(0) = 3 TeV. Such high values of mo have rece ntly been found to have a focus point, leading to relatively low fine-tunin g. It is found that even for mo as high as 3 TeV, mSUGRA can still be disco vered for M-1/2 < 490 +/- 20 GeV. For mu < 0, A(0) = 0 GeV and tan beta = 1 0 (corresponding to the focus point), all points in mSUGRA with a fine-tuni ng measure up to 220 are covered by the search.