Neutrinos are copiously produced at particle colliders, but no collider neutrino has ever
been detected. Colliders produce both neutrinos and anti-neutrinos of all flavors at very high …

We find that a uniform scaling of the gravitational free-fall rates and photon-electron
scattering rate leaves most dimensionless cosmological observables nearly invariant. This …

The hierarchy between the mass of the Higgs boson and larger mass scales becomes ever
more puzzling as experiments push to higher energies. Neutral naturalness is the umbrella …

Many well-motivated extensions of the Standard Model predict the existence of new light
species that may have been produced in the early universe. Prominent examples include …

The non-linear process of cosmic structure formation produces gravitationally bound
overdensities of dark matter known as halos. The abundances, density profiles, ellipticities …

We present new models utilizing QCD-like dark sectors to resolve small-scale structure
problems. These models of resonant self-interacting dark matter in a dark sector with QCD …

The recoil threshold of direct detection (DD) experiments limits the mass range of dark
matter (DM) particles that can be detected, with most DD experiments being blind to sub …

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 …

A bstract The mirror twin Higgs model (MTH) is a solution to the Higgs hierarchy problem
that provides well-predicted cosmological signatures with only three extra parameters: the …

A broad program of searches at high intensity experiments during the coming decade and
beyond will sensitively probe new light mediator particles interacting through the minimal …