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An upper limit on the scale of new physics phenomena from rising cross sections in high multiplicity Higgs and vector boson events
Joerg Jaeckel, Valentin V. Khoze
In very high energy scattering events production of multiple Higgs and electroweak gauge bosons becomes possible. Indeed the perturbative cross section for these processes grows wi…
Hidden photons with Kaluza-Klein towers
Joerg Jaeckel, Sabyasachi Roy, Chris J. Wallace
One of the simplest extensions of the Standard Model (SM) is an extra U(1) gauge group under which SM matter does not carry any charge. The associated boson -- the hidden photon --…
Polarized WW Scattering on the Higgs Pole
Johann Brehmer, Joerg Jaeckel, Tilman Plehn
The Higgs discovery has given us the Higgs-gauge sector as a new handle to search for physics beyond the Standard Model. This includes physics scenarios originally linked to massiv…
A 3.55 keV hint for decaying axion-like particle dark matter
Joerg Jaeckel, Javier Redondo, Andreas Ringwald
Recently, indications for an emission line at 3.55 keV have been found in the combined spectra of a large number of galaxy clusters and also in Andromeda. This line could not be id…
Far from equilibrium dynamics of Bose-Einstein condensation for Axion Dark Matter
Juergen Berges, Joerg Jaeckel
Axions and similar very weakly interacting particles are increasingly compelling candidates for the cold dark matter of the universe. Having very low mass and being produced non-th…