N. Bell

Publications109
h-index36
Citations3,423
Highly Influential Citations68
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Measuring Flavor Ratios of High-Energy Astrophysical Neutrinos
We discuss the prospects for next generation neutrino telescopes, such as IceCube, to measure the flavor ratios of high-energy astrophysical neutrinos. The expected flavor ratios at the sources are…
Realistic neutron star constraints on bosonic asymmetric dark matter
It has been argued that the existence of old neutron stars excludes the possibility of non-annihilating light bosonic dark matter, such as that arising in asymmetric dark matter scenarios. If…
Do solar neutrinos decay
Despite the fact that the solar neutrino flux is now well understood in the context of matter-affected neutrino mixing, we find that it is not yet possible to set a strong and model-independent bound…
Capture of leptophilic dark matter in neutron stars
Dark matter particles will be captured in neutron stars if they undergo scattering interactions with nucleons or leptons. These collisions transfer the dark matter kinetic energy to the star,…
Model independent bounds on magnetic moments of Majorana neutrinos
How Magnetic is the Dirac Neutrino?
We derive model-independent, "naturalness" upper bounds on the magnetic moments munu of Dirac neutrinos generated by physics above the scale of electroweak symmetry breaking. In the absence of…
Decay of high-energy astrophysical neutrinos.
TLDR
This work states that for lifetimes even several orders of magnitude longer, high-energy neutrinos from distant astrophysical sources would decay, which would strongly alter the flavor ratios from the phi(nu(e)):phi-nu(mu):phi(tau)=1-1:1 expected from oscillations alone and should be readily visible in the near future.
LHC Dark Matter Working Group: Next-generation spin-0 dark matter models
Measuring flavor ratios of high-energy astrophysical neutrinos
We discuss the prospects for next generation neutrino telescopes, such as IceCube, to measure the flavor ratios of high-energy astrophysical neutrinos. The expected flavor ratios at the sources are…
Self-consistent Dark Matter simplified models with an s-channel scalar mediator
We examine Simplified Models in which fermionic DM interacts with Standard Model (SM) fermions via the exchange of an $s$-channel scalar mediator. The single-mediator version of this model is not…
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