Search for third generation scalar leptoquarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

TL;DR

This paper reports a search for third generation scalar leptoquarks in proton-proton collisions at 7 TeV using the ATLAS detector, setting mass exclusion limits up to 534 GeV due to no observed excess.

Contribution

First search for third generation scalar leptoquarks in 7 TeV pp collisions with ATLAS, establishing new mass exclusion limits.

Findings

No significant excess observed above Standard Model expectations.

Leptoquarks with masses less than 534 GeV are excluded at 95% confidence level.

Abstract

A search for pair-produced third generation scalar leptoquarks is presented, using proton-proton collisions at sqrt(s)= 7 TeV at the LHC. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 4.7 fb-1. Each leptoquark is assumed to decay to a tau lepton and a b-quark with a branching fraction equal to 100%. No statistically significant excess above the Standard Model expectation is observed. Third generation leptoquarks are therefore excluded at 95% confidence level for masses less than 534 GeV.