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- University of WaterlooCA95 papers
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7 papers · 2 filters
R-parity preserving super-WIMP decays
Maxim Pospelov, Michael Trott
We point out that when the decay of one electroweak scale super-WIMP state to another occurs at second order in a super-weak coupling constant, this can naturally lead to decay lif…
Secluded U(1) below the weak scale
Maxim Pospelov
A secluded U(1) sector with weak admixture to photons, O(10^{-2}-10^{-3}), and the scale of the breaking below 1 GeV represents a natural yet poorly constrained extension of the St…
The Soft-Wall Standard Model
Brian Batell, Tony Gherghetta, Daniel Sword
We explore the possibility of modeling electroweak physics in a warped extra dimension with a soft wall. The infrared boundary is replaced with a smoothly varying dilaton field tha…
Low-energy constraints on kappa-Minkowski extension of the Standard Model
Pavel A. Bolokhov, Maxim Pospelov
We investigate the phenomenological consequences of kappa-Minkowski extension of the Standard Model, working in the linear order in inverse . At this order the *-deformed Lagran…
Bosonic super-WIMPs as keV-scale dark matter
Maxim Pospelov, Adam Ritz, Mikhail B. Voloshin
We consider models of light super-weakly interacting cold dark matter, with O(10-100) keV mass, focusing on bosonic candidates such as pseudoscalars and vectors. We analyze the cos…
Resonant scattering and recombination of pseudo-degenerate WIMPs
Maxim Pospelov, Adam Ritz
We consider the direct and indirect detection signatures of WIMPs χ^0 in kinematic regimes with a heavier, but nearly degenerate, charged state χ^{+-}. For small splittings of O(10…