Search for High Mass Resonances Decaying to Muon Pairs in $\sqrt{s}=1.96$ TeV $p\bar{p}$ Collisions

Abstract

We present a search for a new narrow, spin-1, high mass resonance decaying to ${\mu }^{+}{\mu }^{-}+X$, using a matrix element based likelihood and a simultaneous measurement of the resonance mass and production rate. In data with 4.6 fb${}^{-1}$ of integrated luminosity collected by the CDF detector in $p\bar{p}$ collisions at $\sqrt{s}=1960$ GeV, the most likely signal cross section is consistent with zero at 16\% confidence level. We therefore do not observe evidence for a high mass resonance, and place limits on models predicting spin-1 resonances, including $M>1071$ GeV/$c^2$ at 95\% confidence level for a $Z^{\prime }$ boson with the same couplings to fermions as the $Z$ boson.

For submission to PRL

References in corpus (1)

• Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV

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