Eur. Phys. J. C (2008) 57: 621-626
https://doi.org/10.1140/epjc/s10052-008-0766-4

Special Article - Scientific Note

Prospects for the discovery of 4th family quarks with the ATLAS detector

¹ Department of Physics and Astronomy, University College London, London, UK
² Institute of Physics, Academy of Sciences, Baku, Azerbaijan
³ Physics Department, TOBB ETU University, Ankara, Turkey
⁴ Physics Department, CERN, Geneva, Switzerland
⁵ Physics Department, University of California at Irvine, Irvine, USA

^* e-mail: Gokhan.Unel@cern.ch

Received: 28 May 2008
Revised: 15 August 2008
Published online: 8 October 2008

Abstract

The pair production of heavy fourth-generation quarks, which are predicted under the hypothesis of flavor democracy, is studied using tree-level Monte Carlo generators and fast detector simulation. Two heavy-quark mass values, 500 and 750 GeV, are considered with the assumption that the fourth family mixes primarily with the two light families. It is shown that a clear signature will be observed in the data collected by the ATLAS detector, after the first year of low-luminosity running at the Large Hadron Collider.