Search for High-Mass Resonances Decaying to Dimuons at CDF

Abstract

We present a search for high-mass neutral resonances using dimuon data corresponding to an integrated luminosity of $2.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ by the CDF II detector at the Fermilab Tevatron. No significant excess above the standard model expectation is observed in the dimuon invariant-mass spectrum. We set 95% confidence level upper limits on $\ensuremath{\sigma}\mathrm{BR}(p\overline{p}\ensuremath{\rightarrow}X\ensuremath{\rightarrow}\ensuremath{\mu}\overline{\ensuremath{\mu}})$, where $X$ is a boson with spin-0, 1, or 2. Using these cross section limits, we determine lower mass limits on sneutrinos in $R$-parity-violating supersymmetric models, ${Z}^{\ensuremath{'}}$ bosons, and Kaluza-Klein gravitons in the Randall-Sundrum model.