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10 papers · 1 filter
Direct Detection of Multi-component Secluded WIMPs
Brian Batell, Maxim Pospelov, Adam Ritz
Dark matter candidates comprising several sub-states separated by a small mass gap, and coupled to the Standard Model by (sub-)GeV force carriers, can exhibit non-trivial scatterin…
Probing a Secluded U(1) at B-factories
Brian Batell, Maxim Pospelov, Adam Ritz
A secluded U(1) gauge field, kinetically mixed with Standard Model hypercharge, provides a `portal' mediating interactions with a hidden sector at the renormalizable level, as rece…
Power-counting and the Validity of the Classical Approximation During Inflation
C. P. Burgess, Hyun Min Lee, Michael Trott
We use the power-counting formalism of effective field theory to study the size of loop corrections in theories of slow-roll inflation, with the aim of more precisely identifying t…
The Hierarchy Problem and the Self-Localized Higgs
C. P. Burgess, Claudia de Rham, Leo van Nierop
We examine brane-world scenarios in which all the observed Standard Model particles reside on a brane but the Higgs is an elementary extra-dimensional scalar in the bulk. We show t…
Secluded WIMP Dark Matter
Maxim Pospelov, Adam Ritz, Mikhail B. Voloshin
We consider a generic mechanism via which thermal relic WIMP dark matter may be decoupled from the Standard Model, namely through a combination of WIMP annihilation to metastable m…
Environmental Dependence of Masses and Coupling Constants
Keith A. Olive, Maxim Pospelov
We construct a class of scalar field models coupled to matter that lead to the dependence of masses and coupling constants on the ambient matter density. Such models predict a devi…