Search for Hidden Dimensions in Run I Tevatron Data

TL;DR

This paper reports on four searches for new physics phenomena in Tevatron Run I data, including supersymmetry, extra dimensions, and gravitino production, setting new limits on particle masses and fundamental scales.

Contribution

It presents four novel experimental searches for physics beyond the Standard Model using Tevatron data, with new limits on particle masses and extra-dimensional scales.

Findings

Excluded smuon and smuon neutrino masses up to 280 GeV/c2.

Set a scalar top quark mass limit of 119 GeV/c2.

Limits on the fundamental mass scale M_D of 0.63-0.68 TeV for extra dimensions.

Abstract

We describe the results of four new searches based on data samples from the 1992 - 1996 proton-antiproton 1.8 TeV Collider run at Fermilab. DZERO has searched for resonant slepton production in the two muon plus two jet channel. Using the R-parity violating mSUGRA model, smuon and smuon neutrino masses up to 280 GeV/c2 are excluded. CDF has searched for R-parity violating scalar top quark decays in two tau plus two jet events and set a mass limit of 119 GeV/c2. DZERO has searched for evidence of large extra dimensions in monojet production. Limits are set on M_D the fundamental mass scale, of 0.68 and 0.63 TeV for n = 4 and n = 6 extra dimensions. CDF has interpreted a search for new physics in photon + missing energy events as a search for a gravitino and alternatively as a search for effects of graviton production. A gravitino mass limit of 1.17*10**(-5) eV is set. Limits on M_D of 0.55, 0.58, and 0.60 TeV for n = 4, 6, and 8 are also determined.