Publications (116)
First Results on Dark Matter Substructure from Astrometric Weak Lensing
Cristina Mondino, Anna-Maria Taki, Ken Van Tilburg +1
Low-mass structures of dark matter (DM) are expected to be entirely devoid of light-emitting regions and baryons. Precisely because of this lack of baryonic feedback, small-scale s…
Mixed Sneutrinos, Dark Matter and the LHC
Zoe Thomas, David Tucker-Smith, Neal Weiner
We study the phenomenology of supersymmetric models in which gauge-singlet scalars mix with the MSSM sneutrinos through weak-scale terms. After reviewing the constraints on mix…
Supersymmetry with a Sister Higgs
Daniele S. M. Alves, Patrick J. Fox, Neal Weiner
Within the context of supersymmetric theories, explaining a 125 GeV Higgs motivates a consideration of a broader range of models. We consider a simple addition to the MSSM of a "Si…
A Step in Understanding the Tension
Melissa Joseph, Daniel Aloni, Martin Schmaltz +2
Models of dark sectors with a mass threshold can have important cosmological signatures. If, in the era prior to recombination, a relativistic species becomes nonrelativistic and i…
US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report
Marco Battaglieri, Alberto Belloni, Aaron Chou +248
This white paper summarizes the workshop "U.S. Cosmic Visions: New Ideas in Dark Matter" held at University of Maryland on March 23-25, 2017.
Cores in Dwarf Galaxies from Dark Matter with a Yukawa Potential
Abraham Loeb, Neal Weiner
We show that cold dark matter particles interacting through a Yukawa potential could naturally explain the recently observed cores in dwarf galaxies without affecting the dynamics…
Dark Radiation from Neutrino Mixing after Big Bang Nucleosynthesis
Daniel Aloni, Melissa Joseph, Martin Schmaltz +1
A light ( MeV) dark fermion mixing with the Standard Model neutrinos can naturally equilibrate with the neutrinos via oscillations and scattering. In the presenc…
The Fermi gamma-ray spectrum of the inner galaxy: Implications for annihilating dark matter
Ilias Cholis, Gregory Dobler, Douglas P. Finkbeiner +3
Recently, a preliminary spectrum from the Fermi Gamma-ray Space Telescope has been presented for the inner galaxy (-30 < l < 30, -5 < b < 5), as well as the galactic center (-1 < l…
A Portalino to the Dark Sector
Martin Schmaltz, Neal Weiner
"Portal" models that connect the Standard Model to a Dark Sector allow for a wide variety of scenarios beyond the simplest WIMP models. Kinetic mixing of gauge fields in particular…
Early-Universe Model Building
Pouya Asadi, Saurabh Bansal, Asher Berlin +37
Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as w…
GUT Breaking on the Brane
Yasunori Nomura, David Smith, Neal Weiner
We present a five-dimensional supersymmetric SU(5) theory in which the gauge symmetry is broken maximally (i.e. at the 5D Planck scale M_*) on the same 4D brane where chiral matter…
Not-quite-primordial black holes
Wenzer Qin, Soubhik Kumar, Priyamvada Natarajan +1
We propose a new mechanism for the formation of seeds of supermassive black holes at early cosmic epochs. Enhanced density fluctuations with amplitudes that are not large enough to…
Halometry from Astrometry
Ken Van Tilburg, Anna-Maria Taki, Neal Weiner
Halometry---mapping out the spectrum, location, and kinematics of nonluminous structures inside the Galactic halo---can be realized via variable weak gravitational lensing of the a…
A viable QCD axion in the MeV mass range
Daniele S. M. Alves, Neal Weiner
The QCD axion is one of the most compelling solutions of the strong CP problem. There are major current efforts into searching for an ultralight, invisible axion, which is believed…
The Dark Side of the Electroweak Phase Transition
Subinoy Das, Patrick J. Fox, Abhishek Kumar +1
Recent data from cosmic ray experiments may be explained by a new GeV scale of physics. In addition the fine-tuning of supersymmetric models may be alleviated by new O(GeV) states…
A Step in Understanding the Hubble Tension
Daniel Aloni, Asher Berlin, Melissa Joseph +2
As cosmological data have improved, tensions have arisen. One such tension is the difference between the locally measured Hubble constant and the value inferred from the cosm…
Inelastic Dark Matter in Light of DAMA/LIBRA
Spencer Chang, Graham D. Kribs, David Tucker-Smith +1
Inelastic dark matter, in which WIMP-nucleus scatterings occur through a transition to an excited WIMP state ~ 100 keV above the ground state, provides a compelling explanation of…
Radio Killed the Axion Star: Constraining Axion Properties with Radio Telescopes
Patrick J. Fox, Neal Weiner, Huangyu Xiao
Axion dark matter or any ultralight bosonic dark matter can go through Bose-Einstein condensation due to the large phase density, leading to the formation of axion stars or soliton…
Nuclear scattering of dark matter coupled to a new light scalar
Douglas P. Finkbeiner, Tracy R. Slatyer, Neal Weiner
We consider the nuclear scattering cross section for the eXciting Dark Matter (XDM) model. In XDM, the Weakly Interacting Massive Particles (WIMPs) couple to the Standard Model onl…
Dark Matter in Light of LUX
Patrick J. Fox, Gabriel Jung, Peter Sorensen +1
The landscape of dark matter direct detection has been profoundly altered by the slew of recent experiments. While some have claimed signals consistent with dark matter, others hav…
Alternative Theories of CP violation
Riccardo Barbieri, Lawrence Hall, Achille Stocchi +1
Recent improvements to the limit of Delta M_{B_s} imply that pure superweak theories, while not excluded, no longer provide a good fit to the data. A class of general superweak the…
Electroweakinos Hiding in Higgs Searches
Mariangela Lisanti, Neal Weiner
Direct production of electroweakly charged states may not produce the high energy jets or the significant missing energy required in many new physics searches at the LHC. However,…
Flavor at the TeV Scale with Extra Dimensions
Nima Arkani-Hamed, Lawrence Hall, David Smith +1
Theories where the Standard Model fields reside on a 3-brane, with a low fundamental cut-off and extra dimensions, provide alternative solutions to the gauge hierarchy problem. How…
Radion Mediated Supersymmetry Breaking as a Scherk-Schwarz Theory
David Elazzar Kaplan, Neal Weiner
Recently, it has been demonstrated that radion mediated supersymmetry breaking gives the same spectrum as Scherk-Schwarz supersymmetry breaking, and can be interpreted as a dynamic…
Looking for new charged states at the LHC: Signatures of Magnetic and Rayleigh Dark Matter
Jia Liu, Brian Shuve, Neal Weiner +1
Magnetic and Rayleigh dark matter are models describing weak interactions of dark matter with electromagnetism through non-renormalizable operators of dimensions 5 and 7, respectiv…
Higgs friends and counterfeits at hadron colliders
Patrick J. Fox, David Tucker-Smith, Neal Weiner
We consider the possibility of "Higgs counterfeits" - scalars that can be produced with cross sections comparable to the SM Higgs, and which decay with identical relative observabl…
New Matter Effects and BBN Constraints for Mass Varying Neutrinos
Neal Weiner, Kathryn Zurek
The presence of light (m_a ~ 10^-6 ev) scalar fields in the early universe can modify the cosmology of neutrinos considerably by allowing their masses to vary on cosmological times…
Neutrino Oscillations as a Probe of Dark Energy
David B. Kaplan, Ann E. Nelson, Neal Weiner
We consider a class of theories in which neutrino masses depend significantly on environment, as a result of interactions with the dark sector. Such theories of mass varying neutri…
Impure Thoughts on Inelastic Dark Matter
Spencer Chang, Rafael F. Lang, Neal Weiner
The inelastic dark matter scenario was proposed to reconcile the DAMA annual modulation with null results from other experiments. In this scenario, WIMPs scatter into an excited st…
Exponentially Small Supersymmetry Breaking from Extra Dimensions
Nima Arkani-Hamed, Lawrence Hall, David Smith +1
The supersymmetric ``shining'' of free massive chiral superfields in extra dimensions from a distant source brane can trigger exponentially small supersymmetry breaking on our bran…
A Collective Breaking of R-Parity
Joshua T. Ruderman, Tracy R. Slatyer, Neal Weiner
Supersymmetric theories with an R-parity generally yield a striking missing energy signature, with cascade decays concluding in a neutralino that escapes the detector. In theories…
Neutrino-Dark Sector Equilibration and Primordial Element Abundances
Cara Giovanetti, Martin Schmaltz, Neal Weiner
After neutrinos decouple from the photon bath, they can populate a thermal dark sector. If this occurs at a temperature above ~100 keV, this can have measurable impacts on light el…
LHC Signals for a SuperUnified Theory of Dark Matter
Nima Arkani-Hamed, Neal Weiner
A new theory of WIMP Dark Matter has been proposed, motivated directly by striking Data from the PAMELA and ATIC collaborations. The WIMP is taken to be charged under a hidden gaug…
High Energy Positrons From Annihilating Dark Matter
Ilias Cholis, Lisa Goodenough, Dan Hooper +2
Recent preliminary results from the PAMELA experiment indicate the presence of an excess of cosmic ray positrons above 10 GeV. In this letter, we consider possibility that this sig…
Finite Radiative Electroweak Symmetry Breaking from the Bulk
Nima Arkani-Hamed, Lawrence Hall, Yasunori Nomura +2
A new physical origin for electroweak symmetry breaking is proposed, involving compact spatial dimensions of scale 1/R \approx 1 TeV. The higher dimensional theory is supersymmetri…
The Fermi Gamma-Ray Haze from Dark Matter Annihilations and Anisotropic Diffusion
Gregory Dobler, Ilias Cholis, Neal Weiner
Recent full-sky maps of the Galaxy from the Fermi Gamma-Ray Space Telescope have revealed a diffuse component of emission towards the Galactic center and extending up to roughly +/…
Visible Cascade Higgs Decays to Four Photons at Hadron Colliders
Spencer Chang, Patrick J. Fox, Neal Weiner
The presence of a new singlet scalar particle a can open up new decay channels for the Higgs boson, through cascades of the form h -> 2a -> X, possibly making discovery through sta…
CoGeNT Interpretations
Spencer Chang, Jia Liu, Aaron Pierce +2
Recently, the CoGeNT experiment has reported events in excess of expected background. We analyze dark matter scenarios which can potentially explain this signal. Under the standard…
A CoGeNT Modulation Analysis
Patrick J. Fox, Joachim Kopp, Mariangela Lisanti +1
We analyze the recently released CoGeNT data with a focus on their time-dependent properties. Using various statistical techniques, we confirm the presence of modulation in the dat…
Little Inflatons and Gauge Inflation
David E. Kaplan, Neal Weiner
Cosmological inflation gives a natural answer for a variety of cosmological questions, including the horizon problem, the flatness problem, and others. However, inflation yields ne…
An X-Ray Line from eXciting Dark Matter
Douglas P. Finkbeiner, Neal Weiner
The eXciting Dark Matter (XDM) model was proposed as a mechanism to efficiently convert the kinetic energy (in sufficiently hot environments) of dark matter into e+e- pairs. The st…
The Fermi Haze: A Gamma-Ray Counterpart to the Microwave Haze
Gregory Dobler, Douglas P. Finkbeiner, Ilias Cholis +2
The Fermi Gamma-Ray Space Telescope reveals a diffuse inverse Compton signal in the inner Galaxy with a similar spatial morphology to the microwave haze observed by WMAP, supportin…
Hadron Masses and Screening from AdS Wilson Loops
Andreas Karch, Emanuel Katz, Neal Weiner
We show that in strongly coupled N=4 SYM the binding energy of a heavy and a light quark is independent of the strength of the coupling constant. As a consequence we are able to sh…
Supersymmetric Theories of Neutrino Dark Energy
Rob Fardon, Ann E. Nelson, Neal Weiner
We present a supersymmetric model of dark energy from Mass Varying Neutrinos which is stable against radiative corrections to masses and couplings, and free of dynamical instabilit…
Small Neutrino Masses from Supersymmetry Breaking
Nima Arkani-Hamed, Lawrence Hall, Hitoshi Murayama +2
An alternative to the conventional see-saw mechanism is proposed to explain the origin of small neutrino masses in supersymmetric theories. The masses and couplings of the right-ha…
Inelastic Dark Matter at DAMA, CDMS and Future Experiments
David R. Smith, Neal Weiner
The DAMA annual modulation signature, interpreted as evidence for a spin-independent WIMP coupling, seems in conflict with null results from CDMS. However, in models of ``inelastic…
Astrometric Weak Lensing with Gaia DR3 and Future Catalogs: Searches for Dark Matter Substructure
Cristina Mondino, Andreas Tsantilas, Anna-Maria Taki +2
Small-scale dark matter structures lighter than a billion solar masses are an important probe of primordial density fluctuations and dark matter microphysics. Due to their lack of…
Dark matter detection in two easy steps
Maxim Pospelov, Neal Weiner, Itay Yavin
Multi-component dark matter particles may have a more intricate direct detection signal than simple elastic scattering on nuclei. In a broad class of well-motivated models the inel…
CMB and 21-cm Signals for Dark Matter with a Long-Lived Excited State
Douglas P. Finkbeiner, Nikhil Padmanabhan, Neal Weiner
Motivated by the eXciting Dark Matter (XDM) model of Finkbeiner & Weiner, hypothesized to explain the 511 keV signal in the center of the Milky Way, we consider the CMB and 21-cm s…
Hiding Missing Energy in Missing Energy
Daniele S. M. Alves, Jia Liu, Neal Weiner
Searches for supersymmetry (SUSY) often rely on a combination of hard physics objects (jets, leptons) along with large missing transverse energy to separate New Physics from Standa…
Powerful Yukawas
Timothy Cohen, Matthew McCullough, Neal Weiner
We introduce a class of models where the masses of the light Standard Model fermions are due to an Effective Field Theory operator that appears beyond dimension-4 in the power coun…
Big Axions
Hannah Banks, Marius Kongsore, Neal Weiner
We introduce big axions: axion models in which a Nambu-Goldstone mode emerges from the collective spontaneous breaking of a network of U(1) symmetries delocalized in theory space.…
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…
Late Forming Dark Matter in Theories of Neutrino Dark Energy
Subinoy Das, Neal Weiner
We study the possibility of Late Forming Dark Matter (LFDM), where a scalar field, previously trapped in a metastable state by thermal or finite density effects, begins to oscillat…
Electromagnetic Signals of Inelastic Dark Matter Scattering
Masha Baryakhtar, Asher Berlin, Hongwan Liu +1
Light dark sectors in thermal contact with the Standard Model naturally produce the observed relic dark matter abundance and are the targets of a broad experimental search program.…
Large Extra Dimensions from a Small Extra Dimension
Z. Chacko, Patrick J. Fox, Ann E. Nelson +1
Models with extra dimensions have changed our understanding of the hierarchy problem. In general, these models explain the weakness of gravity by diluting gravity in a large bulk v…
Goldstone Gauginos
Daniele S. M. Alves, Jamison Galloway, Matthew McCullough +1
Models of supersymmetry with Dirac gauginos provide an attractive scenario for physics beyond the standard model. The "supersoft" radiative corrections and suppressed SUSY producti…
Sommerfeld-Enhanced Annihilation in Dark Matter Substructure: Consequences for Constraints on Cosmic-Ray Excesses
Tracy R. Slatyer, Natalia Toro, Neal Weiner
In models of dark matter (DM) with Sommerfeld-enhanced annihilation, where the annihilation rate scales as the inverse velocity, N-body simulations of DM structure formation sugges…
Dark Forces and Light Dark Matter
Dan Hooper, Neal Weiner, Wei Xue
We consider a simple class of models in which the dark matter, X, is coupled to a new gauge boson, phi, with a relatively low mass (m_phi \sim 100 MeV-3 GeV). Neither the dark matt…
Consistent Scenarios for Cosmic-Ray Excesses from Sommerfeld-Enhanced Dark Matter Annihilation
Douglas P. Finkbeiner, Lisa Goodenough, Tracy R. Slatyer +2
Anomalies in direct and indirect detection have motivated models of dark matter consisting of a multiplet of nearly-degenerate states, coupled by a new GeV-scale interaction. We pe…
Inelastic Dark Matter and DAMA/LIBRA: An Experimentum Crucis
Douglas P. Finkbeiner, Tongyan Lin, Neal Weiner
The DAMA/LIBRA collaboration has detected an annual modulation of the recoil rate in NaI crystals with the phase expected for WIMP scattering events. This signal is dramatically in…
MiXDM: Cosmic Ray Signals from Multiple States of Dark Matter
Ilias Cholis, Neal Weiner
Recent data from cosmic ray experiments such as PAMELA, Fermi, ATIC and PPB-BETS all suggest the need for a new primary source of electrons and positrons at high (>~100 GeV) energi…
High Energy Positrons and the WMAP Haze from Exciting Dark Matter
Ilias Cholis, Lisa Goodenough, Neal Weiner
We consider the signals of positrons and electrons from "exciting" dark matter (XDM) annihilation. Because of the light (m_phi ~< 1 GeV) force carrier phi into which the dark matte…
Inelastic Dark Matter
David Smith, Neal Weiner
Many observations suggest that much of the matter of the universe is non-baryonic. Recently, the DAMA NaI dark matter direct detection experiment reported an annual modulation in t…
U(2) and Maximal Mixing of nu_{mu}
Lawrence J. Hall, Neal Weiner
A U(2) flavor symmetry can successfully describe the charged fermion masses and mixings, and supress SUSY FCNC processes, making it a viable candidate for a theory of flavor. We sh…
Recurrent Axinovae and their Cosmological Constraints
Patrick J. Fox, Neal Weiner, Huangyu Xiao
Axion-like dark matter whose symmetry breaking occurs after the end of inflation predicts enhanced primordial density fluctuations at small scales. This leads to dense axion miniha…
Magnetic Inelastic Dark Matter
Spencer Chang, Neal Weiner, Itay Yavin
Iodine is distinguished from other elements used in dark matter direct detection experiments both by its large mass as well as its large magnetic moment. Inelastic dark matter util…
Peaked Signals from Dark Matter Velocity Structures in Direct Detection Experiments
Rafael F. Lang, Neal Weiner
In direct dark matter detection experiments, conventional elastic scattering of WIMPs results in exponentially falling recoil spectra. In contrast, theories of WIMPs with excited s…
Ineffective Supersymmetry: Electroweak Symmetry Breaking from Extra Dimensions
Neal Weiner
Recently, a mechanism for electroweak symmetry breaking (EWSB) was discussed, in which the scale of EWSB is set by the scale of an additional dimension R ~ Tev^-1. The mechanism in…
Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
Douglas P. Finkbeiner, Neal Weiner
We propose a WIMP candidate with an ``excited state'' 1-2 MeV above the ground state, which may be collisionally excited and de-excites by e+e- pair emission. By converting its kin…
Integrating Out Astrophysical Uncertainties
Patrick J. Fox, Jia Liu, Neal Weiner
Underground searches for dark matter involve a complicated interplay of particle physics, nuclear physics, atomic physics and astrophysics. We attempt to remove the uncertainties a…
The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC
Ilias Cholis, Gregory Dobler, Douglas P. Finkbeiner +2
Multiple lines of evidence indicate an anomalous injection of high-energy e+- in the Galactic halo. The recent fraction spectrum from the Payload for Antimatter Matter Explor…
Models of Goldstone Gauginos
Daniele S. M. Alves, Jamison Galloway, Matthew McCullough +1
Models with Dirac gauginos provide appealing scenarios for physics beyond the standard model. They have smaller radiative corrections to the Higgs mass, a suppression of certain SU…
UV Completions of Magnetic Inelastic Dark Matter and RayDM for the Fermi Line(s)
Neal Weiner, Itay Yavin
Models that seek to produce a line at ~130 GeV as possibly present in the Fermi data face a number of phenomenological hurdles, not the least of which is achieving the high cross s…
Dirac Gaugino Masses and Supersoft Supersymmetry Breaking
Patrick J. Fox, Ann E. Nelson, Neal Weiner
We introduce a new supersymmetric extension of the standard model in which the gauge sector contains complete N=2 supersymmetry multiplets. Supersymmetry breaking from the D-term v…
Neutrino Masses at v^{3/2}
Nima Arkani-Hamed, Lawrence Hall, Hitoshi Murayama +2
Theories in which neutrino masses are generated by a conventional see-saw mechanism generically yield masses which are O(v^2) in units where M_{Pl}=1, which is naively too small to…
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim +200
In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological…
Gauge/Anomaly Syzygy and Generalized Brane World Models of Supersymmetry Breaking
Ann E. Nelson, Neal Weiner
In theories in which SUSY is broken on a brane separated from the MSSM matter fields, supersymmetry breaking is naturally mediated in a variety of ways. Absent other light fields i…
Extended Anomaly Mediation and New Physics at 10 TeV
Ann E. Nelson, Neal Weiner
In the MSSM, an unfortunate prediction of minimal anomaly mediated supersymmetry breaking is that the slepton masses squared are negative. This problem is particularly intractable…
Capture and Indirect Detection of Inelastic Dark Matter
Arjun Menon, Rob Morris, Aaron Pierce +1
We compute the capture rate for Dark Matter in the Sun for models where the dominant interaction with nuclei is inelastic -- the Dark Matter up-scatters to a nearby dark "partner"…
Neutrino Mass Anarchy
Lawrence Hall, Hitoshi Murayama, Neal Weiner
What is the form of the neutrino mass matrix which governs the oscillations of the atmospheric and solar neutrinos? Features of the data have led to a dominant viewpoint where the…
Momentum Dependent Dark Matter Scattering
Spencer Chang, Aaron Pierce, Neal Weiner
It is usually assumed that WIMPs interact through spin-independent and spin-dependent interactions. Interactions which carry additional powers of the momentum transfer, q^2, are as…
Astrometry with Extended-Path Intensity Correlation
Ken Van Tilburg, Masha Baryakhtar, Marios Galanis +1
Intensity interferometry -- the correlation of spatially separated light intensities -- has historically been an important tool for precision optical astronomical observations. How…
Simply Unnatural Supersymmetry
Nima Arkani-Hamed, Arpit Gupta, David E. Kaplan +2
The current measurement of the Higgs mass, the ubiquitous nature of loop-suppressed gaugino masses in gravity-mediated supersymmetry breaking, relic dark matter density from …
What does it take to have at CMB times?
Miguel Escudero, Maksym Ovchynnikov, Neal Weiner
The vast majority of extensions of the Standard Model affecting the number of effective relativistic neutrino species () do so additively, namely, they enhance this qu…
Unification without Unification
Neal Weiner
The logarithmic running of the gauge couplings alpha_1, alpha_2 and alpha_3, indicates that they may unify at some scale M_GUT ~ 10^16. This is often taken to imply that the standa…
Solving the Hierarchy Problem with Exponentially Large Dimensions
Nima Arkani-Hamed, Lawrence Hall, David Smith +1
In theories with (sets of) two large extra dimensions and supersymmetry in the bulk, the presence of non-supersymmetric brane defects naturally induces a logarithmic potential for…
Low Energy INTEGRAL Positrons from eXciting Dark Matter
Rob Morris, Neal Weiner
The origin of the e^+e^- 511 keV line observed by INTEGRAL remains unclear. The rate and morphology of the signal have prompted questions as to whether dark matter could play a rol…
Vectorlike Fermions and Higgs Couplings
John Kearney, Aaron Pierce, Neal Weiner
New vectorlike fermions that mix with the third generation can significantly affect the tau and b Yukawa couplings. Consistent with precision electroweak measurements, the width of…
An Effective Z'
Patrick J. Fox, Jia Liu, David Tucker-Smith +1
We describe a method to couple Z' gauge bosons to the standard model (SM), without charging the SM fields under the U(1)', but instead through effective higher dimension operators.…
A Supersymmetric Twin Higgs
Spencer Chang, Lawrence J. Hall, Neal Weiner
We present a supersymmetric realization of the twin Higgs mechanism, which cancels off all contributions to the Higgs mass generated above a scale f. Radiative corrections induced…
Nonstandard Higgs Boson Decays
Spencer Chang, Radovan Dermisek, John F. Gunion +1
This review summarizes the motivations for and phenomenological consequences of nonstandard Higgs boson decays, with emphasis on final states containing a pair of non-Standard-Mode…
Light Signals from a Lighter Higgs
Patrick J. Fox, Neal Weiner
With the Higgs search program already quite mature, there is the exciting possibility of discovering a new particle with rates near that of the SM Higgs. We consider models with a…
Deconstruction and Gauge Theories in AdS_5
Lisa Randall, Yael Shadmi, Neal Weiner
On a slice of AdS_5, despite having a dimensionful coupling, gauge theories can exhibit logarithmic dependence on scale. In this paper, we utilize deconstruction to analyze the sca…
Sensitivity and Insensitivity of Galaxy Cluster Surveys to New Physics
Joshua Erlich, Brian Glover, Neal Weiner
We study the implications and limitations of galaxy cluster surveys for constraining models of particle physics and gravity beyond the Standard Model. Flux limited cluster counts p…
How Dark Are Majorana WIMPs? Signals from MiDM and Rayleigh Dark Matter
Neal Weiner, Itay Yavin
The effective interactions of dark matter with photons are fairly restricted. Yet both direct detection as well as monochromatic gamma ray signatures depend sensitively on the pres…
Cosmic Ray Positrons from Annihilations into a New, Heavy Lepton
Daniel J. Phalen, Aaron Pierce, Neal Weiner
Recent results from the PAMELA experiment indicate an excess in the positron spectrum above 10 GeV, but anti-proton data are consistent with the expected astrophysical backgrounds.…
Early Galaxies from Rare Inflationary Processes and JWST Observations
Soubhik Kumar, Neal Weiner
Rare Poisson processes (PP) during cosmic inflation can lead to signatures that are localized in position space and are not well captured by the standard two- or higher-point corre…
Searching for Dark Matter Interactions with ACT, SPT and DES
Zilu Zhou, Neal Weiner
Models of a dark radiation sector with a mass threshold (WZDR+) have proved to be an appealing alternative to CDM. These models provide simple comparison models, grounded in we…
The Power of Halometry
Siddharth Mishra-Sharma, Ken Van Tilburg, Neal Weiner
Astrometric weak gravitational lensing is a powerful probe of the distribution of matter on sub-Galactic scales, which harbor important information about the fundamental nature of…