Search for Technicolor Particles Produced in Association with a W Boson at CDF

Abstract

We present a search for the technicolor particles ${\rho }_T$ and ${\pi }_T$ in the process $p\bar{p}\to {\rho }_T\to W{\pi }_T$ at a center of mass energy of $\sqrt{s}=1.96\mathrm{TeV}$. The search uses a data sample corresponding to approximately $1.9{\mathrm{fb}}^{-1}$ of integrated luminosity accumulated by the CDF II detector at the Fermilab Tevatron. The event signature we consider is $W\to \ell \nu$ and ${\pi }_T\to b\bar{b},b\bar{c}$ or $b\bar{u}$ depending on the ${\pi }_T$ charge. We select events with a single high-$p_T$ electron or muon, large missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with multiple $b$-tagging algorithms. The observed number of events and the invariant mass distributions are consistent with the standard model background expectations, and we exclude a region at 95% confidence level in the ${\rho }_T$-${\pi }_T$ mass plane. As a result, a large fraction of the region $m({\rho }_T)=180$ - $250\mathrm{GeV}/c^2$ and $m({\pi }_T)=95$ - $145\mathrm{GeV}/c^2$ is excluded.

submitted to Phys. Rev. Lett

References in corpus (2)

• Search for techniparticles in e +jets events at D0
• Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network

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