Searches for new physics at the Tevatron

TL;DR

This paper reports on various searches for new physics phenomena at the Tevatron collider, setting limits on supersymmetric particles, extra dimensions, and conducting model-independent analyses, all consistent with the Standard Model.

Contribution

It presents the first limits on top squark decays beyond previous analyses, searches for effects of large extra dimensions, and implements a broad model-independent search strategy.

Findings

D0 set top squark mass limits >140 GeV for certain decays

CDF excluded top squarks below 111 GeV in a specific channel

No evidence of new physics found, limits on extra dimensions established

Abstract

Recent results of searches for new phenomena using data collected in Run I by the CDF and D0 experiments are presented. D0 set limits for top squarks decaying into b+l+sneutrino significantly beyond the reach of previous analyses in this channel (m_stop>140GeV at 95% C.L. for m_snu=45GeV). CDF exclude top squarks decaying into b+tau for masses below 111GeV. In addition, D0 have analyzed photon and electron pair production to search for effects of large extra dimensions. No evidence is found, resulting in limits on the effective Planck scale of 1.1 TeV. Finally, D0 have used a model-independent search strategy for new physics at high pt to test more than 32 different final states for evidence of a signal. Observations in all samples are found to be consistent with expectations from the Standard Model.