1.2k citations · 4.3k across the 20 of their papers we have counts for
35 papers · 1 filter
New Parity-Violating Muonic Forces
Brian Batell, David McKeen, Maxim Pospelov
The recent discrepancy between proton charge radius measurements extracted from electron-proton versus muon-proton systems is suggestive of a new force that differentiates between…
Muon Capture Constraints on Sterile Neutrino Properties
David McKeen, Maxim Pospelov
We show that ordinary and radiative muon capture impose stringent constraints on sterile neutrino properties. In particular, we consider a sterile neutrino with a mass between 40 t…
Big Bang Nucleosynthesis as a Probe of New Physics
Maxim Pospelov, Josef Pradler
Big bang nucleosynthesis (BBN), an epoch of primordial nuclear transformations in the expanding Universe, has left an observable imprint in the abundances of light elements. Precis…
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…
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…