Search for large extra dimensions in dimuon and dielectron events in pp collisions at √s = 7 TeV

[摘要] Results are presented from a search for large, extra spatial dimensions in events with either two isolated muons or two isolated electrons. The data are from proton–proton interactions at √s = 7 TeV collected with the CMS detector at the LHC. The size of the data sample corresponds to an integrated luminosity of approximately 2 fb[superscript −1]. The observed dimuon and dielectron mass spectra are found to be consistent with standard-model expectations. Depending on the number of extra dimensions, the 95% confidence level limits from the combined μμ and ee channels range from M[subscript s]>2.4 TeV to M[subscript s]>3.8 TeV, where M[subscript s] characterizes the scale for the onset of quantum gravity.

[发布机构] Elsevier