Advertisement

The European Physical Journal C

, Volume 49, Issue 2, pp 613–622 | Cite as

Prospects to search for E6 isosinglet quarks in ATLAS

  • R. Mehdiyev
  • S. Sultansoy
  • G. UnelEmail author
  • M. Yilmaz
Special Article - Scientific Note

Abstract

We consider pair production of new down-type isosinglet quarks originating from E6, which is the favorite gauge symmetry group in superstring inspired GUT models. The study concentrates on the possibility of observing the pair production of the lightest of the new quarks, D, in the ATLAS detector at the forthcoming LHC accelerator, in the channel DD̄→ZjZj . Both signal and background events are studied using tree level event generators based on Monte Carlo techniques. The detector effects are taken into account using the ATLAS fast simulation tool. It is shown that ATLAS can observe the D quark within the first year of low luminosity LHC operation if its mass is less than 650 GeV. For the case of two years of full luminosity running, 1 TeV can be reached with about three sigma significance.

Keywords

Invariant Mass Pair Production Quark Mass Atlas Detector Background Event 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    ATLAS Detector and Physics Performance Technical Design Report, CERN/LHCC/99-14/15Google Scholar
  2. 2.
    CMS Collaboration, Technical Proposal, CERN-LHCC-94-38Google Scholar
  3. 3.
    P.H. Frampton, P.Q. Hung, M. Sher, Phys. Rep. 330, 263 (2000)CrossRefADSGoogle Scholar
  4. 4.
    S. Sultansoy, hep-ph/0004271Google Scholar
  5. 5.
    N. Arkani-Hamed, A.G. Cohen, H. Georgi, Phys. Lett. B 513, 232 (2001)CrossRefADSMathSciNetGoogle Scholar
  6. 6.
    G. Azuelos et al., Eur. Phys. J. C 39, 13 (2005)CrossRefADSGoogle Scholar
  7. 7.
    F. Gursey, P. Ramond, P. Sikivie, Phys. Lett. B 60, 177 (1976)CrossRefADSGoogle Scholar
  8. 8.
    F. Gursey, M. Serdaroglu, Lett. Nuovo Cimento 21, 28 (1978)Google Scholar
  9. 9.
    J.H. Schwarz, Lett. Math. Phys. 34, 309 (1995)CrossRefMathSciNetGoogle Scholar
  10. 10.
    E. Witten, Nucl. Phys. B 443, 85 (1995)CrossRefADSMathSciNetGoogle Scholar
  11. 11.
    J. Hewett, T. Rizzo, Phys. Rep. 183, 193 (1989)CrossRefADSGoogle Scholar
  12. 12.
    E. Arik et al., Phys. Rev. D 58, 117701 (1998)CrossRefADSGoogle Scholar
  13. 13.
    J.A. Aguilar-Saavedra, Phys. Lett. B 625, 234 (2005)CrossRefADSGoogle Scholar
  14. 14.
    S. Eidelmann et. al., Phys. Lett. B 592, 1 (2004)CrossRefADSGoogle Scholar
  15. 15.
    T.C. Andre, C.L. Rosner, Phys. Rev. D 69, 035009 (2004)CrossRefADSGoogle Scholar
  16. 16.
    Z.R. Babaev, V.S. Zamiralov, S.F. Sultanov, IHEP preprint (Serpukhov, 1981), pp. 81–88Google Scholar
  17. 17.
    O. Cakir, M. Yilmaz, Europhys. Lett. 38, 13 (1997)CrossRefADSGoogle Scholar
  18. 18.
    G. Unel, S. Sultansoy, hep-ex/0610064Google Scholar
  19. 19.
    A. Pukhov, hep-ph/0412191Google Scholar
  20. 20.
    CompHEP Collaboration, E. Boos et al., Nucl. Instrum. Methods A 534, 250 (2004)CrossRefADSGoogle Scholar
  21. 21.
    T. Stelzer, W.F. Long, Phys. Commun. 81, 357 (1994)CrossRefADSGoogle Scholar
  22. 22.
    J. Pumplin, D.R. Stump, J. Huston, H.L. Lai, P. Nadolsky, W.K. Tung, JHEP 0207, 012 (2002) [hep-ph/0201195]CrossRefADSGoogle Scholar
  23. 23.
    ATLAS Collaboration, Trigger and Data Acquisition Technical Design Report, LHCC-2003-022/TDR-016Google Scholar
  24. 24.
    R. Mehdiyev et al., ATL-PHYS-PUB-2005-021 (2005)Google Scholar
  25. 25.
    T. Sjostrand et al., Comput. Phys. Commun. 135, 238 (2001) [hep-ph/0010017]CrossRefADSGoogle Scholar
  26. 26.
    E. Richter-Was et al., ATLAS Note PHYS-98-131 (1998), http://www.hep.ucl.ac.uk/atlas/atlfast/Google Scholar
  27. 27.
    Geant4 Collaboration, S. Agostinelli et al., Nucl. Instrum. Methods A 506, 250 (2003)CrossRefADSGoogle Scholar
  28. 28.
    L. Lyons, Data Analysis for Physical Science Students (Cambridge University Press, Oxford, 1991)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • R. Mehdiyev
    • 1
    • 2
  • S. Sultansoy
    • 2
    • 3
  • G. Unel
    • 4
    • 5
    Email author
  • M. Yilmaz
    • 3
  1. 1.Département de PhysiqueUniversité de MontréalMontréalCanada
  2. 2.Institute of PhysicsAcademy of SciencesBakuAzerbaijan
  3. 3.Physics DepartmentGazi UniversityAnkaraTurkey
  4. 4.Physics DepartmentUniversity of California at IrvineIrvineUSA
  5. 5.Physics DepartmentCERNGenevaSwitzerland

Personalised recommendations