Gravitational decays of heavy particles in large extra dimensions

Abstract

In the framework of quantum gravity propagating in large extra dimensions, we analyze the inclusive radiative emission of Kaluza-Klein spin-2 gravitons in the two-fermions decays of massive gauge bosons, heavy quarks, Higgs bosons, and in the two-massive gauge bosons decay of Higgs bosons. We provide analytical expressions for the square modulus of amplitudes summed over polarizations, and numerical results for the widths and branching ratios. The corresponding decays in the Z, top quark, and Higgs boson sectors of the standard model are analyzed in the light of present and future experiments.

29 pages, 4 figures, notation slightly changed, a few comments added

References in corpus (2)

• Bounds on Universal Extra Dimensions
• Probes Of Universal Extra Dimensions at Colliders

Cited by in corpus (9)

• Ascertaining the spin for new resonances decaying into tau+ tau- at Hadron Colliders
• Center-Edge Asymmetry at Hadron Colliders
• Graviton-induced Bremsstrahlung
• Universal Extra Dimension models with gravity mediated decays after LHC Run II data
• Violation of Angular Momentum Selection Rules in Quantum Gravity
• Large extra dimension effects in Higgs boson production at linear colliders and Higgs factories
• Rotationally non-invariant aspects of scattering amplitudes with graviton exchange
• Radiative decay of a scalar in a medium
• Neutrino gravitational decay in a medium