Search for Large Extra Dimensions in the Production of Jets and Missing Transverse Energy in $p\overline{p}$ Collisions at $\sqrt{s}=1.96\mathrm{TeV}$

We present the results of a search for new physics in the jets plus missing transverse energy data sample collected from $368{\mathrm{pb}}^{-1}$ of $p\overline{p}$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$ recorded by the Collider Detector at Fermilab. We compare the number of events observed in the data with a data-based estimate of the standard model backgrounds contributing to this signature. We observe no significant excess of events, and we interpret this null result in terms of lower limits on the fundamental Planck scale for a large extra dimensions scenario.

Figure 1

$W$ and $Z$ Boson cross sections as a function of leading jet $E_T$.

Figure 2

Comparison of the event ${\mathrm{E̸}}_T$ distribution for the 263 events in our candidate sample with the predicted SM distribution. The expected additional contribution from an LED signal for $n=2$ and $M_D=1\mathrm{TeV}$ is plotted on top of the predicted SM distribution.