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Dark matter casts light on the early Universe

open access: yesJournal of High Energy Physics, 2018
We show how knowledge of the cold dark matter (CDM) density can be used, in conjunction with measurements of the parameters of a scenario for beyond the Standard Model (BSM) physics, to provide information about the evolution of the Universe before Big ...
A. Arbey   +3 more
doaj   +1 more source

Simultaneous search for extra light and heavy Higgs bosons via cascade decays

open access: yesJournal of High Energy Physics, 2017
Models with extended Higgs sectors can contain several additional Higgs states, heavier or lighter than the SM Higgs boson. The couplings of lighter extra states to SM particles can be strongly reduced, leading to small cross sections for their direct ...
Ulrich Ellwanger   +1 more
doaj   +1 more source

Beyond standard model calculations with Sherpa. [PDF]

open access: yesEur Phys J C Part Fields, 2015
Höche S   +3 more
europepmc   +1 more source

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