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Journal of High Energy Physics

, 2010:25 | Cite as

A search for heavy Kaluza-Klein electroweak gauge bosons at the LHC

  • Gideon Bella
  • Erez Etzion
  • Noam Hod
  • Yaron Oz
  • Yiftah Silver
  • Mark Sutton
Article

Abstract

The feasibility for the observation of a certain leptonic Kaluza-Klein (KK) hard process in pp interactions at the LHC is presented. Within the S 1 /Z 2 TeV−1 extra dimensional theoretical framework with the focus on the KK excitations of the Standard Model γ and Z 0 gauge bosons, the hard-process, \( f \bar{f} \to \sum\nolimits_n {{{\left( {{{{\gamma^{*}}} \left/ {{Z^{*}}} \right.}} \right)}_n}} \to F \bar{F} \), has been used where f is the initial state parton, F the final state lepton and (γ*/Z *) n is the n th KK excitation of the γ/Z 0 boson. For this study the analytic form for the hard process cross section has been independently calculated by the authors and has been implemented using the Moses framework. The Moses framework itself, that has been written by the authors, was used as an external process within the Pythia8 Monte Carlo generator which provides the phase space generation for the final state leptons and partons from the initial state hadrons, and the simulation of initial and final state radiation and hadronization. A brief discussion of the possibility for observing and identifying the unique signature of the KK signal given the current LHC program is also presented.

Keywords

Hadron-Hadron Scattering 

References

  1. [1]
    N. Arkani-Hamed, S. Dimopoulos and G.R. Dvali, The hierarchy problem and new dimensions at a millimeter, Phys. Lett. B 429 (1998) 263 [hep-ph/9803315] [SPIRES].ADSGoogle Scholar
  2. [2]
    N. Arkani-Hamed, S. Dimopoulos and G.R. Dvali, Phenomenology, astrophysics and cosmology of theories with sub-millimeter dimensions and TeV scale quantum gravity, Phys. Rev. D 59 (1999) 086004 [hep-ph/9807344] [SPIRES].ADSGoogle Scholar
  3. [3]
    I. Antoniadis, A Possible new dimension at a few TeV , Phys. Lett. B 246 (1990) 377 [SPIRES].MathSciNetADSGoogle Scholar
  4. [4]
    L. Randall and R. Sundrum, A large mass hierarchy from a small extra dimension, Phys. Rev. Lett. 83 (1999) 3370 [hep-ph/9905221] [SPIRES].MathSciNetADSMATHCrossRefGoogle Scholar
  5. [5]
    L. Randall and M.D. Schwartz, Unification and the hierarchy from AdS5, Phys. Rev. Lett. 88 (2002) 081801 [hep-th/0108115] [SPIRES].MathSciNetADSCrossRefGoogle Scholar
  6. [6]
    L. Randall and M.D. Schwartz, Quantum field theory and unification in AdS5, JHEP 11 (2001) 003 [hep-th/0108114] [SPIRES].MathSciNetADSCrossRefGoogle Scholar
  7. [7]
    K.R. Dienes, E. Dudas and T. Gherghetta, Extra spacetime dimensions and unification, Phys. Lett. B 436 (1998) 55 [hep-ph/9803466] [SPIRES].MathSciNetADSGoogle Scholar
  8. [8]
    K.R. Dienes, E. Dudas and T. Gherghetta, Grand unification at intermediate mass scales through extra dimensions, Nucl. Phys. B 537 (1999) 47 [hep-ph/9806292] [SPIRES].MathSciNetADSCrossRefGoogle Scholar
  9. [9]
    I. Antoniadis, Physics of extra dimensions, J. Phys.: Conf Ser. 33 (2006) 170.CrossRefGoogle Scholar
  10. [10]
    A. Pomarol and M. Quirós, The standard model from extra dimensions, Phys. Lett. B 438 (1998) 255 [hep-ph/9806263] [SPIRES].ADSGoogle Scholar
  11. [11]
    M. Masip and A. Pomarol, Effects of SM Kaluza-Klein excitations on electroweak observables, Phys. Rev. D 60 (1999) 096005 [hep-ph/9902467] [SPIRES].ADSGoogle Scholar
  12. [12]
    I. Antoniadis, K. Benakli and M. Quirós, Direct collider signatures of large extra dimensions, Phys. Lett. B 460 (1999) 176 [hep-ph/9905311] [SPIRES].ADSGoogle Scholar
  13. [13]
    N. Arkani-Hamed and M. Schmaltz, Hierarchies without symmetries from extra dimensions, Phys. Rev. D 61 (2000) 033005 [hep-ph/9903417] [SPIRES].ADSGoogle Scholar
  14. [14]
    L. Evans, (ed. ) and P. Bryant, (ed. ), LHC machine, 2008 JINST 3 S08001 [SPIRES].
  15. [15]
    A. Leike, The phenomenology of extra neutral gauge bosons, Phys. Rept. 317 (1999) 143 [hep-ph/9805494] [SPIRES].ADSCrossRefGoogle Scholar
  16. [16]
    T.G. Rizzo, Testing the nature of Kaluza-Klein excitations at future lepton colliders, Phys. Rev. D 61 (2000) 055005 [hep-ph/9909232] [SPIRES].ADSGoogle Scholar
  17. [17]
    T.G. Rizzo, Indirect searches for Z′-like resonances at the LHC, JHEP 08 (2009) 082 [arXiv:0904.2534] [SPIRES].ADSCrossRefGoogle Scholar
  18. [18]
    G. Bella, E. Etzion, N. Hod and M. Sutton, Introduction to the MCnet Moses project and heavy gauge bosons search at the LHC, arXiv:1004.1649 [SPIRES].
  19. [19]
    T. Sjöstrand, S. Mrenna and P.Z. Skands, A brief introduction to PYTHIA 8.1, Comput. Phys. Commun. 178 (2008) 852 [arXiv:0710.3820] [SPIRES].ADSMATHCrossRefGoogle Scholar
  20. [20]
    F. Del Aguila, The physics of z-prime bosons, Acta Phys. Polon. B 25 (1994) 1317 [hep-ph/9404323] [SPIRES].Google Scholar
  21. [21]
    G. Azuelos and G. Polesello, Prospects for the detection of Kaluza-Klein excitations of gauge bosons in the ATLAS detector at the LHC, Eur. Phys. J. C 39 (2004) S1.ADSGoogle Scholar
  22. [22]
    E. Richter-Was, D. Froidevaux and L. Poggioli, ATLFAST: 1.0: a package for particle-level analysis, ATL-PHYS-96-079 (1996).
  23. [23]
    E. Richter-Was, D. Froidevaux and L. Poggioli, ATLFAST 2.0 a fast simulation package for ATLA S, ATL-PHYS-98-131 (1998).
  24. [24]
    ATLAS collaboration, G. Aad et al., The ATLAS experiment at the CERN Large Hadron Collider, 2008 JINST 3 S08003 [SPIRES].Google Scholar
  25. [25]
    M. Dittmar, A.-S. Nicollerat and A. Djouadi, Z′ studies at the LHC: an update, Phys. Lett. B 583 (2004) 111 [hep-ph/0307020] [SPIRES].ADSGoogle Scholar
  26. [26]
    D. Bardin et al., Z line shape, CERN-TH-5468-89 (1989).
  27. [27]
    T.G. Rizzo, Pedagogical introduction to extra dimensions, SLAC-PUB-10753 (2004).
  28. [28]
    T.G. Rizzo, Pedagogical introduction to extra dimensions, hep-ph/0409309 [SSI-2004-L013] [SPIRES].
  29. [29]
    K.-m. Cheung and G.L. Landsberg, Kaluza-Klein states of the standard model gauge bosons: constraints from high energy experiments, Phys. Rev. D 65 (2002) 076003 [hep-ph/0110346] [SPIRES].ADSGoogle Scholar
  30. [30]
    J. Hewett and M. Spiropulu, Particle physics probes of extra spacetime dimensions, Annu. Rev. Nucl. Part. Phys. 22 (2002) 397 [hep-ph/0205106] [SPIRES].ADSCrossRefGoogle Scholar
  31. [31]
    Particle Data Group collaboration, C. Amsler et al., Review of particle physics, Phys. Lett. B 667 (2008) 1 [SPIRES].ADSGoogle Scholar
  32. [32]
    E. Yurkovsky, Prospects for Kaluza-Klein excitations search in the di-lepton channel at the LHC, CERN-THESIS-2010-036 (2010).
  33. [33]
    F. Petriello and S. Quackenbush, Measuring Z′ couplings at the CERN LHC, Phys. Rev. D 77 (2008) 115004 [arXiv:0801.4389] [SPIRES].ADSGoogle Scholar
  34. [34]
    T.G. Rizzo, Z′ phenomenology and the LHC, hep-ph/0610104 [SPIRES].
  35. [35]
    J.C. Collins and D.E. Soper, Angular distribution of dileptons in high-energy hadron collisions, Phys. Rev. D 16 (1977) 2219 [SPIRES].ADSGoogle Scholar
  36. [36]
    A.D. Martin, R.G. Roberts, W.J. Stirling and R.S. Thorne, MRST 2001: partons and α s from precise deep inelastic scattering and Tevatron jet data, Eur. Phys. J. C 23 (2002) 73 [hep-ph/0110215] [SPIRES].ADSGoogle Scholar
  37. [37]
    A.D. Martin, R.G. Roberts, W.J. Stirling and R.S. Thorne, NNLO global parton analysis, Phys. Lett. B 531 (2002) 216 [hep-ph/0201127] [SPIRES].ADSGoogle Scholar
  38. [38]
    ATLAS collaboration, Expected performance of the ATLAS experiment, detector, trigger and physics, CERN-OPEN-2008-020 (2010).
  39. [39]
    S. Lacaprara, The CMS muon system: physics performance, Eur. Phys. J. C 34 (2004) s75.ADSCrossRefGoogle Scholar
  40. [40]
    T. Sjöstrand, private communication.Google Scholar

Copyright information

© SISSA, Trieste, Italy 2010

Authors and Affiliations

  • Gideon Bella
    • 1
  • Erez Etzion
    • 1
  • Noam Hod
    • 1
  • Yaron Oz
    • 1
  • Yiftah Silver
    • 1
  • Mark Sutton
    • 2
  1. 1.The Raymond and Beverly Sackler School of Physics and AstronomyTel-Aviv UniversityTel AvivIsrael
  2. 2.The Department of Physics and AstronomyUniversity of Sheffield, Hicks BuildingSheffieldU.K.

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