Search for scalar bottom pair production with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV

TL;DR

This paper reports a search for scalar bottom quark pairs in proton-proton collisions at 7 TeV using the ATLAS detector, setting limits on their masses within a supersymmetric model.

Contribution

First search for scalar bottom pair production in pp collisions at 7 TeV with ATLAS, establishing mass exclusion limits in a supersymmetric scenario.

Findings

Excluded scalar bottom masses up to 390 GeV for neutralino masses below 60 GeV.

Set 95% confidence level upper limits on scalar bottom production.

No evidence found for scalar bottom pair production.

Abstract

The results of a search for pair production of the scalar partners of bottom quarks in 2.05 fb^-1 of pp collisions at sqrt{s} = 7 TeV using the ATLAS experiment are reported. Scalar bottoms are searched for in events with large missing transverse momentum and two jets in the final state, where both jets are identified as originating from a b-quark. In an R-parity conserving minimal supersymmetric scenario, assuming that the scalar bottom decays exclusively into a bottom quark and a neutralino, 95% confidence-level upper limits are obtained in the tilde{b}_1 - tilde{chi}^0_1 mass plane such that for neutralino masses below 60 GeV scalar bottom masses up to 390 GeV are excluded.