Composite twin dark matter

Terning, John; Verhaaren, Christopher B.; Zora, Kyle

doi:10.1103/physrevd.99.095020

Cited by 36 publications

(26 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These models have proved to be a boon for phenomenology. Among other things, they quite generally motivate looking for Higgs decays to longlived particles at colliders [22][23][24][25][26][27][28][29] and contain well-motivated dark matter (DM) candidates [30][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Freezing-in twin dark matter

Koren

McGehee

2020

Phys. Rev. D

View full text Add to dashboard Cite

The mirror twin Higgs (MTH) addresses the little hierarchy problem by relating every Standard Model (SM) particle to a twin copy, but is in tension with cosmological bounds on light degrees of freedom. Asymmetric reheating has recently been proposed as a simple way to fix MTH cosmology by diluting the twin energy density. We show that this dilution sets the stage for an interesting freeze-in scenario where both the initial absence of dark sector energy and the feeble coupling to the SM are motivated for reasons unrelated to dark matter production. We give the twin photon a Stueckelberg mass and freeze-in twin electron and positron dark matter through the kinetic mixing portal. The kinetic mixing required to obtain the dark matter abundance is of the loop-suppressed order expected from infrared contributions in the MTH.

show abstract

Section: Introductionmentioning

confidence: 99%

Freezing-in twin dark matter

Koren

McGehee

2020

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…This basic low energy set-up has been modified in several ways ways [13][14][15][16][17][18][19][20][21][22][23] and admits various UV completions [24][25][26][27][28][29][30][31][32]. Recent work has focused on collider signals at the LHC and future machines [33][34][35][36][37][38][39][40][41], as well as cosmological analyses [18,[42][43][44][45][46][47][48][49] including several dark matter candidates [50][51][52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Breaking mirror twin hypercharge

Batell

Verhaaren

2019

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

The Twin Higgs scenario stabilizes the Higgs mass through an approximate global symmetry and has remained natural in the face of increasingly stringent LHC bounds on colored top partners. Two basic structural questions in this framework concern the nature of the twin hypercharge gauge symmetry and the origin of the Z 2 symmetry breaking needed to achieve the correct vacuum alignment. Both questions are addressed in a simple extension of the Mirror Twin Higgs model with an exact Z 2 symmetry and a scalar field that spontaneously breaks both twin hypercharge and Z 2. Due to the Z 2 symmetry and an approximate U(2) symmetry in the potential, a new hypercharge scalar appears in the visible sector and, like the Higgs, is a pseudo-Nambu-Goldstone boson with a weak-scale mass. Couplings between the hypercharge scalar and matter provide a new dynamical source of twin sector fermion masses. Depending on the nature and size of these couplings, a variety of experimental signatures may arise, including quark and lepton flavor violation, neutrino masses and mixings as well as direct collider probes of the hypercharged scalar. These signals are correlated with the twin matter spectrum, which can differ dramatically from the visible one, including dynamical realizations of fraternal-like scenarios.

show abstract

“…An even more radical approach is to simply remove from the theory the two lighter generations of mirror fermions and the twin photon, which do not play a role in solving the little hierarchy problem. This construction, known as the Fraternal Twin Higgs (FTH) [54], gives rise to distinctive signatures at the LHC involving displaced vertices [55,56], and admits several promising dark matter candidates [57][58][59][60][61].…”

Section: Introductionmentioning

confidence: 99%

Collider signals of the Mirror Twin Higgs boson through the hypercharge portal

et al. 2019

Self Cite

View full text Add to dashboard Cite

We consider the collider signals arising from kinetic mixing between the hypercharge gauge boson of the Standard Model and its twin counterpart in the Mirror Twin Higgs model, in the framework in which the twin photon is massive. Through the mixing, the Standard Model fermions acquire charges under the mirror photon and the mirror Z boson. We determine the current experimental bounds on this scenario, and show that the mixing can be large enough to discover both the twin photon and the twin Z at the LHC, or at a future 100 TeV hadron collider, with dilepton resonances being a particularly conspicuous signal. We show that, in simple models, measuring the masses of both the mirror photon and mirror Z, along with the corresponding event rates in the dilepton channel, overdetermines the system, and can be used to test these theories.

show abstract

Composite twin dark matter

Cited by 36 publications

References 71 publications

Freezing-in twin dark matter

Freezing-in twin dark matter

Breaking mirror twin hypercharge

Collider signals of the Mirror Twin Higgs boson through the hypercharge portal

Contact Info

Product

Resources

About