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Same-sign top pair production in an extra-dimension model of flavor at the CERN Large Hadron Collider

Aug, 2008
12 pages
Published in:
  • Phys.Rev.D 78 (2008) 096005
e-Print:
DOI:
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Abstract: (arXiv)
We study the same-sign top pair production mediated by the first Kluza-Klein (KK) excitation of the gluon in the Randall-Sundrum (RS) model with flavor violation at the Large Hadron Collider (LHC), in which the nonuniversal couplings between fermions and KK gauge bosons will lead to observable tree level flavor-changing neutral current (FCNC) effects. We find that the same-sign top pairs produced in our case have property of high energy and high transverse momentum, and lead to an observable signal in the same-sign dilepton channel even when the mass of the KK gluon reach up to 3 TeV. We further investigate the potential of the LHC to probe the flavor violating parameters and find that the LHC can probe very small values of them.
  • 11.30.Hv
  • 12.60.-i
  • 11.25.Wx
  • 11.10.Kk
  • flavor: violation
  • gluon: Kaluza-Klein
  • pair production
  • neutral current: flavor changing
  • Randall-Sundrum model
  • higher-dimensional
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