Indirect Searches for Z'-like Resonances at the LHC

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We explore the possibility of indirectly observing the effects of Z{prime}-like particles with electroweak strength couplings in the Drell-Yan channel at the LHC with masses above the resonance direct search reach. We find that, mostly due to statistical limitations, this is very unlikely in almost all classes of models independently of the spin of the resonance. Not unexpectedly, the one exception to this general result is the case of degenerate Kaluza-Klein (KK) excitations of the photon and Z that occur in some extra-dimensional models. In this special case, the strong destructive interference with the Standard Model (SM) exchanges below the ... continued below

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17 pages

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Rizzo, Thomas G. & /SLAC June 19, 2009.

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Description

We explore the possibility of indirectly observing the effects of Z{prime}-like particles with electroweak strength couplings in the Drell-Yan channel at the LHC with masses above the resonance direct search reach. We find that, mostly due to statistical limitations, this is very unlikely in almost all classes of models independently of the spin of the resonance. Not unexpectedly, the one exception to this general result is the case of degenerate Kaluza-Klein (KK) excitations of the photon and Z that occur in some extra-dimensional models. In this special case, the strong destructive interference with the Standard Model (SM) exchanges below the resonance mass leads to a well-known significant suppression of the cross section and thus increased sensitivity to this particular new physics scenario.

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17 pages

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  • Journal Name: Submitted to Journal of High Energy Physics (JHEP)

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  • Report No.: SLAC-PUB-13572
  • Grant Number: AC02-76SF00515
  • DOI: 10.1088/1126-6708/2009/08/082 | External Link
  • Office of Scientific & Technical Information Report Number: 957428
  • Archival Resource Key: ark:/67531/metadc927459

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  • June 19, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 15, 2016, 3:34 p.m.

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Rizzo, Thomas G. & /SLAC. Indirect Searches for Z'-like Resonances at the LHC, article, June 19, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc927459/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.