Abstract
We analyze LHC data in order to constrain the parameter space of new spin-2 particles universally coupled to the energy-momentum tensor. These new hypothetical particles are the so-called hidden gravitons, whose phenomenology at low energies is determined by two parameters: its mass and its dimensional coupling constant. Hidden gravitons arise in many different extensions of the Standard Model of particles and interactions and General Relativity. Their phenomenology has been studied mainly in relation to modifications of gravity and astrophysical signatures. In this work, we extend the constraints for heavy hidden gravitons, with masses larger than 1 GeV, by taking into account events collected by ATLAS and CMS in the WW channel, Drell-Yan processes, and the diphoton channel from proton-proton collisions at sqrt{s} = 8 TeV.
Highlights
JHEP01(2022)129 existence of new massive spin-2 particles, either with a continuum mass spectrum or as a number of widely separated mass resonances
We analyze LHC data in order to constrain the parameter space of new spin-2 particles universally coupled to the energy-momentum tensor
Hidden gravitons arise in many different extensions of the Standard Model of particles and interactions and General Relativity
Summary
Where m is the graviton mass and ημν is the Minkowski metric This Lagrangian is the well-known Fierz-Pauli Lagrangian [29] that describes a massive spin-2 particle. The kinetic and mass terms in this Lagrangian can be found imposing the absence of ghost instabilities [10, 22, 30]. This is the general linear description of a massive spin-2 particle, so it can be used as a generic framework to study theories with spin-2 degrees of freedom.
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