Searches for Dark Photons at Accelerators

Graham, M. T.; Hearty, C.; Williams, M.

doi:10.1146/annurev-nucl-110320-051823

Cited by 46 publications

(32 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A comprehensive discussion of constraints and future prospects for dark photons in the mass range relevant to us has been presented in [43][44][45][46] and we refer to those works for further details. For our plots we adapt the limits from [44] and add limits which were subsequently published from LHCb [23] and NA64 [47], as well as projections from FASER2 [48].…”

Section: A Brief Recap Of Dark Photonsmentioning

confidence: 99%

Belle II sensitivity to long-lived dark photons

Ferber,

Garcia-Cely,

Schmidt-Hoberg

2022

Preprint

View full text Add to dashboard Cite

In this letter we point out that the Belle II experiment has a unique sensitivity to visibly decaying long-lived dark photons. Concentrating on the signatures with a single high energy photon in association with a displaced pair of charged particles, we find that Belle II will be able to probe large regions of parameter space that cannot be covered by any other running or proposed experimental facility. While the signature with charged muons or pions in the final state is expected to be background-free after all selections are applied, the case of final state electrons is more involved and requires an in-depth study. We discuss possible ways to further suppress backgrounds and the corresponding experimental prospects.

show abstract

Section: A Brief Recap Of Dark Photonsmentioning

confidence: 99%

Belle II sensitivity to long-lived dark photons

Ferber,

Garcia-Cely,

Schmidt-Hoberg

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Dark sector particles can be pair produced from the electrons scattering off of nucleons, giving rise to missing-energy final states [112,113]. These experiments employ stringent selection criteria making it possible to conduct an essentially background free search for such missing-energy signals [114][115][116].…”

Section: A Fixed Target Experimentsmentioning

confidence: 99%

Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments

Chatterjee¹,

Laha²

2022

Preprint

View full text Add to dashboard Cite

We study a minimal model of pseudo-Dirac dark matter, interacting through transition electric and magnetic dipole moments. Motivated by the fact that xenon experiments can detect electrons down to ∼ keV recoil energies, we consider O(keV) splittings between the mass eigenstates. We study the production of this dark matter candidate via the freeze-in mechanism. We discuss the direct detection signatures of the model arising from the down-scattering of the heavier state, that are produced in Solar upscattering, finding observable signatures at the current and near-future xenon based direct detection experiments. We also study complementary constraints on the model from fixed target experiments, lepton colliders, supernovae cooling and cosmology. We show that next generation xenon experiments can either discover this well motivated and minimal dark matter candidate, or constrain how strongly inelastic dark matter can interact via the dipole moment operators.

show abstract

“…These operators can be classified in i) dipole operators, ii) operators that modify the kinetic terms or that contribute to the vector bosons kinetic mixing and iii) the operator O T that contributes to the Z boson mass. 3 With the exception of O T , all these operators must be generated at loop level in a weakly coupled UV completion [18,19], thus justifying the introduction of the factor 1/16π 2 in Eq. (2.2).…”

Section: The Dark Photon Effective Field Theorymentioning

confidence: 99%

“…On the other hand, the null results from searches for electroweak (EW) and TeV scale New Physics (NP) at the LHC have given a strong push to the idea that NP may be secluded from the Standard Model (SM) particles. The simplest dark sector is perhaps the so-called dark photon model [1], see [2,3] for recent reviews, in which a new abelian gauge boson is added to the SM particle content. Its interactions with SM states arise solely from the kinetic mixing between the dark photon and the hypercharge gauge boson field strength tensors.…”

Section: Introductionmentioning

confidence: 99%

Dark Photon bounds in the dark EFT

Barducci,

Bertuzzo,

di Cortona

et al. 2021

Preprint

View full text Add to dashboard Cite

Dark photons are massive abelian gauge bosons that interact with ordinary photons via a kinetic mixing with the hypercharge field strength tensor. This theory is probed by a variety of different experiments and limits are set on a combination of the dark photon mass and kinetic mixing parameter. These limits can however be strongly modified by the presence of additional heavy degrees of freedom. Using the framework of dark effective field theory, we study how robust are the current experimental bounds when these new states are present. We focus in particular on the possible existence of a dark dipole interaction between the Standard Model leptons and the dark photon. We show that the presence of a dark dipole modifies existing supernovae bounds for cut-off scales up to O(10 − 100 TeV). On the other hand, terrestrial experiments, such as LSND and E137, can probe cut-off scales up to O(3 TeV). For the latter experiment we highlight that the bound extends down to vanishing kinetic mixing.

show abstract

Searches for Dark Photons at Accelerators

Cited by 46 publications

References 102 publications

Belle II sensitivity to long-lived dark photons

Belle II sensitivity to long-lived dark photons

Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments

Dark Photon bounds in the dark EFT

Contact Info

Product

Resources

About