Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

The workshop “Shedding light on X17” brings together scientists looking for the existence of
a possible new light particle, often referred to as X17. This hypothetical particle can explain …

High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large
number of particles along the beam collision axis, outside of the acceptance of existing LHC …

A bstract We explore constraints on gauge bosons of a weakly coupled U (1) B− L,\(\mathrm
{U}{(1)} _ {L_ {\mu}-{L} _e},\kern0. 5em\mathrm {U}{(1)} _ {L_e-{L} _ {\tau}}\kern0 …

A bstract Searches for dark photons provide serendipitous discovery potential for other types
of vector particles. We develop a framework for recasting dark photon searches to obtain …

This report, based on the Dark Sectors workshop at SLAC in April 2016, summarizes the
scientific importance of searches for dark sector dark matter and forces at masses beneath …

Searches are performed for both promptlike and long-lived dark photons, A′, produced in
proton-proton collisions at a center-of-mass energy of 13 TeV. These searches look for …

Recently a 6.8 σ anomaly has been reported in the opening angle and invariant mass
distributions of e+ e-pairs produced in Be 8 nuclear transitions. The data are explained by a …

These lectures provide an introduction to models and direct detection of dark matter. We
summarize the general features and motivations for candidates in the full dark matter mass …

Many models of physics beyond the standard model predict the existence of new Abelian
forces with new gauge bosons mediating interactions between “dark sectors” and the …