Warped Gravitons at the LHC and Beyond

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dc.creatorAgashe, Kaustubh
dc.creatorDavoudiasl, Hooman
dc.creatorPerez, Gilad
dc.creatorSoni, Amarjit
dc.date2007-01-22
dc.date2007-07-11
dc.date.accessioned2026-07-07T11:02:37Z
dc.date.available2026-07-07T11:02:37Z
dc.descriptionWe study the production and decay of Kaluza-Klein (KK) gravitons at the Large Hadron Collider (LHC), in the framework of a warped extra dimension in which the Standard Model (SM) fields propagate. Such a scenario can provide solutions to both the Planck-weak hierarchy problem and the flavor puzzle of the SM. In this scenario, the production via $q \bar{q}$ annihilation and decays to the conventional photon and lepton channels are highly suppressed. However, we show that graviton production via gluon fusion followed by decay to longitudinal $Z/W$ can be significant; vector boson fusion is found to be a sub-dominant production mode. In particular, the ``golden'' $ZZ$ decay mode offers a distinctive 4-lepton signal that could lead to the observation at the LHC with 300 fb$^{-1}$ (SLHC with 3 ab$^{-1}$) of a KK graviton with a mass up to $\sim 2$ ($\sim 3$) TeV for the ratio of the AdS$_5$ curvature to the Planck scale modestly above unity. We argue that (contrary to the lore) such a size of the curvature scale can still be within the regime of validity of the framework. Upgrades beyond the SLHC luminosity are required to discover gravitons heavier than $\sim 4$ TeV, as favored by the electroweak and flavor precision tests in the simplest such models.
dc.description9 pages, 5 figures. Minor modifications, reference added
dc.identifierhttps://arxiv.org/abs/hep-ph/0701186
dc.identifierhttp://arxiv.org/abs/hep-ph/0701186
dc.identifierPhys.Rev.D76:036006,2007
dc.identifierdoi:10.1103/PhysRevD.76.036006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188309
dc.subjectHigh Energy Physics - Phenomenology
dc.titleWarped Gravitons at the LHC and Beyond
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