Abstract
We present a search for a neutral particle, pair produced in collisions at , which decays into two muons and lives long enough to travel at least 5 cm before decaying. The analysis uses of data recorded with the D0 detector. The background is estimated to be about one event. No candidates are observed, and limits are set on the pair-production cross section times branching fraction into dimuons for such particles. For a mass of 10 GeV and lifetime of , we exclude values greater than 0.14 pb (95% C.L.). These results are used to limit the interpretation of NuTeV’s excess of dimuon events.
- Received 17 July 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.161802
©2006 American Physical Society