Leptons and photons at the LHC: cascades through spinless adjoints

Abstract

We study the hadron collider phenomenology of (1,0) Kaluza-Klein modes along two universal extra dimensions compactified on the chiral square. Cascade decays of spinless adjoints proceed through tree-level 3-body decays involving leptons as well as one-loop 2-body decays involving photons. As a result, spectacular events with as many as six charged leptons, or one photon plus four charged leptons are expected to be observed at the LHC. Unusual events with relatively large branching fractions include three leptons of same charge plus one lepton of opposite charge, or one photon plus two leptons of same charge. We estimate the current limit from the Tevatron on the compactification scale, set by searches for trilepton events, to be around 270 GeV.

33+1 pages, 14 figures

References in corpus (5)

• Exotic Collider Signals from the Complete Phase Diagram of Minimal Universal Extra Dimensions
• TASI 2004 Lectures on the Phenomenology of Extra Dimensions
• Dark Matter in Universal Extra Dimension Models: ${\gamma }_{KK}$ vrs ${\nu }_{R,KK}$
• Multi-W Events at LHC from a Warped Extra Dimension with Custodial Symmetry
• Two Universal Extra Dimensions

Cited by in corpus (21)

• Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
• Color-octet scalars at the LHC
• Massive color-octet bosons and pairs of resonances at hadron colliders
• The WIMP Forest: Indirect Detection of a Chiral Square
• Missing energy look-alikes with 100 pb-1 at the LHC
• Two universal extra dimensions and spinless photons at the ILC
• Search for the minimal universal extra dimension model at the LHC with $\sqrt{s}$=7 TeV
• Global fits of the Minimal Universal Extra Dimensions scenario
• Anti-B --> X(s) gamma in two universal extra dimensions
• Phenomenology of spinless adjoints in two Universal Extra Dimensions
• Flavor unification, dark matter, proton decay and other observable predictions with low-scale $S_4$ symmetry
• Probing two Universal Extra Dimensions at International Linear Collider
• A Review on Non-Minimal Universal Extra Dimensions
• Distinguishing spins in decay chains with photons at the Large Hadron Collider
• Probing two Universal Extra Dimension model with leptons and photons at the LHC and ILC
• Warping the Universal Extra Dimensions
• Constraints on heavy colored scalars from Tevatron's Higgs exclusion limit
• Extra Dimensions at the LHC
• Precise predictions for Higgs production in models with color-octet scalars
• Assisted baryon number violation from $4k+2$ dimensions
• Octet scalars shaping LHC distributions in 4-jet final states