Publications (19)
Discovering Asymmetric Dark Matter with Anti-Neutrinos
Brian Feldstein, A. Liam Fitzpatrick
We discuss possible signatures of Asymmetric Dark Matter (ADM) through dark matter decays to neutrinos. We specifically focus on scenarios in which the Standard Model (SM) baryon a…
Luminous Dark Matter
Brian Feldstein, Peter W. Graham, Surjeet Rajendran
We propose a dark matter model in which the signal in direct detection experiments arises from electromagnetic, not nuclear, energy deposition. This can provide a novel explanation…
Density Perturbations in Chain Inflation
Brian Feldstein, Brock Tweedie
We consider the model of ``Chain Inflation,'' in which the period of inflation in our universe took the form of a long sequence of quantum tunneling events. We find that in the sim…
Landscape Predictions for the Higgs Boson and Top Quark Masses
Brian Feldstein, Lawrence J. Hall, Taizan Watari
If the Standard Model is valid up to scales near the Planck mass, and if the cosmological constant and Higgs mass parameters scan on a landscape of vacua, it is well known that the…
Hawking Radiation in the Ghost Condensate is Non-Thermal
Brian Feldstein
We consider a Schwarzschild black hole immersed in a ghost condensate background. It is shown that the Hawking radiation in the quanta of small perturbations around this background…
Simplified Models for Dark Matter Searches at the LHC
Jalal Abdallah, Henrique Araujo, Alexandre Arbey +94
This document outlines a set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that thes…
Pure Gravity Mediation of Supersymmetry Breaking at the LHC
Biplob Bhattacherjee, Brian Feldstein, Masahiro Ibe +2
Supersymmetric theories which can allow for a 125 GeV Higgs mass and also solve the naturalness and susy flavor problems now require a fair degree of complexity. Here we consider t…
Density Perturbations and the Cosmological Constant from Inflationary Landscapes
Brian Feldstein, Lawrence J. Hall, Taizan Watari
An anthropic understanding of the cosmological constant requires that the vacuum energy at late time scans from one patch of the universe to another. If the vacuum energy during in…
Quantifying (dis)agreement between direct detection experiments in a halo-independent way
Brian Feldstein, Felix Kahlhoefer
We propose an improved method to study recent and near-future dark matter direct detection experiments with small numbers of observed events. Our method determines in a quantitativ…
Hypercharged Dark Matter and Direct Detection as a Probe of Reheating
Brian Feldstein, Masahiro Ibe, Tsutomu T. Yanagida
The lack of new physics at the LHC so far weakens the argument for TeV scale thermal dark matter. On the other hand, heavier, non-thermal dark matter is generally difficult to test…
Large Mixing Angles From Many Right-Handed Neutrinos
Brian Feldstein, William Klemm
A beautiful understanding of the smallness of the neutrino masses may be obtained via the seesaw mechanism, whereby one takes advantage of the key qualitative distinction between t…
A new halo-independent approach to dark matter direct detection analysis
Brian Feldstein, Felix Kahlhoefer
Uncertainty in the local dark matter velocity distribution is a key difficulty in the analysis of data from direct detection experiments. Here we propose a new approach for dealing…
Why is the Supersymmetry Breaking Scale Unnaturally High?
Brian Feldstein, Tsutomu T. Yanagida
Evidence is mounting that natural supersymmetry at the weak scale is not realized in nature. On the other hand, string theory suggests that supersymmetry may be present at some ene…
Simultaneous Solutions of the Strong CP and Mu Problems
Brian Feldstein, Lawrence J. Hall, Taizan Watari
The μparameter of the supersymmetric standard model is replaced by λS, where S is a singlet chiral superfield, introducing a Peccei--Quinn symmetry into the theory. Dynamics at t…
Neutrinos at IceCube from Heavy Decaying Dark Matter
Brian Feldstein, Alexander Kusenko, Shigeki Matsumoto +1
A monochromatic line in the cosmic neutrino spectrum would be a smoking gun signature of dark matter. It is intriguing that the IceCube experiment has recently reported two PeV neu…
Form Factor Dark Matter
Brian Feldstein, A. Liam Fitzpatrick, Emanuel Katz
We present a dynamical alternative to inelastic dark matter as a way of reconciling the modulating signal seen at DAMA with null results at other direct detection experiments. The…
Spontaneous Lorentz Violation, Negative Energy and the Second Law of Thermodynamics
Brian Feldstein
We reconsider the possibility of violating the generalized second law of thermodynamics in theories with spontaneous Lorentz violation. It has been proposed that this may be accomp…
A Simple Explanation for DAMA with Moderate Channeling
Brian Feldstein, A. Liam Fitzpatrick, Emanuel Katz +1
We consider the possibility that the DAMA signal arises from channeled events in simple models where the dark matter interaction with nuclei is suppressed at small momenta. As with…
Hermitian Flavor Violation
Jason Evans, Brian Feldstein, William Klemm +2
The fundamental constraint on two Higgs doublet models comes from the requirement of sufficiently suppressing flavor-changing neutral currents. There are various standard approache…