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LHC sensitivity to a Kaluza-Klein gluon in the two b-jets decay channel

Masato Arai1,3,*, Gi-Chol Cho2,†, Karel Smolek3,‡, and Kyoko Yoneyama2,4,§

  • 1Fukushima National College of Technology, Fukushima 970-8034, Japan
  • 2Department of Physics, Ochanomizu University, Tokyo 112-8610, Japan
  • 3Institute of Experimental and Applied Physics, Czech Technical University in Prague, Horská 3a/22, 128 00 Prague 2, Czech Republic
  • 4Department of Physics, Bergische Universität Wuppertal, Gaußstraße 20, D-42119 Wuppertal, Germany

  • *masato.arai@fukushima-nct.ac.jp
  • †cho.gichol@ocha.ac.jp
  • ‡karel.smolek@utef.cvut.cz
  • §yoneyama@hep.phys.ocha.ac.jp
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Phys. Rev. D 87, 016010 – Published 18 January, 2013

DOI: https://doi.org/10.1103/PhysRevD.87.016010

Abstract

We examine a possibility to discover a Kaluza-Klein (KK) excitation of gluon in a warped extra-dimension model at the Large Hadron Collider, focusing on a decay channel of the KK gluon into a b-quark pair. It is known that, in a certain extension of the warped extra-dimension model, the third generation quarks could strongly couple to the KK gluon, as a result of appropriate bulk fermion mass parameters. Taking account of kinematical cuts to reduce background events, we show the model parameter space, which leads to a significance larger than 5σ with the integrated luminosity of 10   (100)  fb−1.

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Phys. Rev. D 87, 016010– Published 18 January, 2013
  • Received 5 December 2012

© 2013 American Physical Society

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