Search for New Phenomena in the Dijet Mass Distribution updated using 13.0 fb~(-1) of pp Collisions at √s= 8 TeV collected by the ATLAS Detector

摘要

The invariant mass distributions of dijet events produced in pp collisions at a center of mass energy of 8 TeV by the LHC has been studied using the ATLAS detector. A total integrated luminosity of 13.0 fb~(-1) collected in 2012 has been employed. The observed dijet masses extend up to 4.69 TeV. No local excesses have been observed. A 95% C.L. limit on the production of a benchmark model of excited quarks, q~*,has been set at 3.84 TeV. The previous ATLAS 95% C.L. limit on q~* mass using 5.8 fb~(-1) of 2012 data was set at 3.66 TeV. Limits on cross section times acceptance, σxA, have also been updated using simplified gaussian models in order to allow limit setting on new theories.