Phenomenological Constraints on Extra-Dimensional Scalars

Abstract

We examine whether the ATLAS detector has sensitivity to extra-dimensional scalars (as opposed to components of higher-dimensional tensors which look like 4D scalars), in scenarios having the extra-dimensional Planck scale in the TeV range and $n\ge 2$ nonwarped extra dimensions. Such scalars appear as partners of the graviton in virtually all higher-dimensional supersymmetric theories. Using the scalar's lowest-dimensional effective couplings to quarks and gluons, we compute the rate for the production of a hard jet together with missing energy. We find a nontrivial range of graviscalar couplings to which ATLAS could be sensitive, with experiments being more sensitive to couplings to gluons than to quarks. Graviscalar emission increases the missing-energy signal by adding to graviton production, and so complicates the inference of the extra-dimensional Planck scale from an observed rate. Because graviscalar differential cross sections resemble those for gravitons, it is unlikely that these can be experimentally distinguished from one another should a missing energy signal be observed.

References in corpus (1)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by in corpus (22)

• Supersymmetric Large Extra Dimensions and the Cosmological Constant: An Update
• Anisotropic Modulus Stabilisation: Strings at LHC Scales with Micron-sized Extra Dimensions
• UV Caps and Modulus Stabilization for 6D Gauged Chiral Supergravity
• Scaling Solutions to 6D Gauged Chiral Supergravity
• Casimir Energies for 6D Supergravities Compactified on T_2/Z_N with Wilson Lines
• Search for Large Extra Dimensions in the Production of Jets and Missing Transverse Energy in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV
• Split Supersymmetry from Anomalous U(1)
• Impact of Single-Top Measurement to Littlest Higgs Model with T-Parity
• Kicking the Rugby Ball: Perturbations of 6D Gauged Chiral Supergravity
• The Hierarchy Problem and the Self-Localized Higgs
• MSLED, Neutrino Oscillations and the Cosmological Constant
• Bulk Stabilization, the Extra-Dimensional Higgs Portal and Missing Energy in Higgs Events
• Accidental SUSY: Enhanced Bulk Supersymmetry from Brane Back-reaction
• Hydrodynamic source with continuous emission in Au+Au collisions at $\sqrt{s}=200$ GeV
• Light Axiodilatons: Matter Couplings, Weak-Scale Completions and Long-Distance Tests of Gravity
• Infrared fixed point of the top Yukawa coupling in split supersymmetry
• Dilepton decays and oscillation of $B_s$ in split supersymmetry with R-parity violation
• Gravitational Forces on a Codimension-2 Brane
• The hyperon neutron star mean field model
• Supersymmetric Large Extra Dimensions and the Cosmological Constant Problem
• Computer modeling of properties of Kaluza-Klein particles and their searches at the LHC
• A background for thermal photons in heavy ion collisions