264 citations · 1.2k across the 31 of their papers we have counts for
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Snowmass2021 Cosmic Frontier: Synergies between dark matter searches and multiwavelength/multimessenger astrophysics
Shin'ichiro Ando, Sebastian Baum, Michael Boylan-Kolchin +23
This whitepaper focuses on the astrophysical systematics which are encountered in dark matter searches. Oftentimes in indirect and also in direct dark matter searches, astrophysica…
Lattice-Friendly Gauge Completion of a Composite Higgs with Top Partners
Helene Gertov, Ann E. Nelson, Ashley Perko +1
We give an explicit example of a composite Higgs model with a pseudo-Nambu-Goldstone Higgs in which the top Yukawa coupling is generated via the partial compositeness mechanism. Th…
Dark matter amnesia in out-of-equilibrium scenarios
Joshua Berger, Djuna Croon, Sonia El Hedri +3
Models in which the dark matter is produced at extremely low rates from the annihilation of Standard Model particles in the early Universe allow us to explain the current dark matt…
Composite Higgs Models with a Hidden Sector
Ann Nelson, Michael Park, Devin Walker
We discuss the phenomenology of composite Higgs models that naturally produce a Standard Model-like Higgs boson with a mass of GeV. The effective theory below the compositene…
Reducing the Quadratic Divergence in the Higgs Mass Squared Without Top Partners
Sonia El Hedri, Ann E. Nelson, Devin G. E. Walker
We examine a model with multiple scalar fields to see whether it is possible to reduce the fine- tuning of the SM Higgs mass without introducing low scale top partners. Our approac…
Les Houches 2017: Physics at TeV Colliders New Physics Working Group Report
G. Brooijmans, M. Dolan, S. Gori +80
We present the activities of the `New Physics' working group for the `Physics at TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report includes new physics st…
Hidden-Sector Spectroscopy with Gravitational Waves from Binary Neutron Stars
Djuna Croon, Ann E. Nelson, Chen Sun +2
We show that neutron star binaries can be ideal laboratories to probe hidden sectors with a long range force. In particular, it is possible for gravitational wave detectors such as…
The Higgs Portal and Cosmology
Ketevi Assamagan, Chien-Yi Chen, John Paul Chou +19
Higgs portal interactions provide a simple mechanism for addressing two open problems in cosmology: dark matter and the baryon asymmetry. In the latter instance, Higgs portal inter…
Perturbative Unitarity Constraints on Charged/Colored Portals
Matthew Cahill-Rowley, Sonia El Hedri, William Shepherd +1
Dark matter that was once in thermal equilibrium with the Standard Model is generally prohibited from obtaining all of its mass from the electroweak or QCD phase transitions. This…
Perturbative Unitarity Constraints on Gauge Portals
Sonia El Hedri, William Shepherd, Devin G. E. Walker
Dark matter that was once in thermal equilibrium with the Standard Model is generally prohibited from obtaining all of its mass from the electroweak phase transition. This implies…
Perturbative Unitarity Constraints on the NMSSM Higgs Sector
Kassahun Betre, Sonia El Hedri, Devin G. E. Walker
We place perturbative unitarity constraints on both the dimensionful and dimensionless parameters in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) Higgs Sector. These c…
Dark energy from the string axiverse
Marc Kamionkowski, Josef Pradler, Devin G. E. Walker
String theories suggest the existence of a plethora of axion-like fields with masses spread over a huge number of decades. Here we show that these ideas lend themselves to a model…
Deconstructed Transverse Mass Variables
Ahmed Ismail, Reinhard Schwienhorst, Joseph S. Virzi +1
Traditional searches for R-parity conserving natural supersymmetry (SUSY) require large transverse mass and missing energy cuts to separate the signal from large backgrounds. SUSY…
Single Top Production as a Probe of Heavy Resonances
Elizabeth Drueke, Joseph Nutter, Reinhard Schwienhorst +3
The single top quark final state provides sensitivity to new heavy resonances produced in proton-proton collisions at the Large Hadron Collider. Particularly, the single top plus q…
Perturbative Unitarity Constraints on a Supersymmetric Higgs Portal
Kassahun Betre, Sonia El Hedri, Devin G. E. Walker
We place perturbative unitarity constraints on both the dimensionful and dimensionless couplings in the Next-to-Minimal Supersymmetric Standard Model Higgs Sector. These constraint…
Snowmass 2013 Top quark working group report
K. Agashe, R. Erbacher, C. E. Gerber +167
This report summarizes the work of the Energy Frontier Top Quark working group of the 2013 Community Summer Study (Snowmass).
Unitarity Constraints on Higgs Portals
Devin G. E. Walker
Dark matter that was once in thermal equilibrium with the Standard Model is generally prohibited from obtaining all of its mass from the electroweak phase transition. This implies…
Single Top Production as a Probe of B-prime Quarks
Joseph Nutter, Reinhard Schwienhorst, Devin G. E. Walker +1
We show how single top production at the LHC can be used to discover (and characterize the couplings of) B' quarks, which are an essential part of many natural models of new physic…
Les Houches 2011: Physics at TeV Colliders New Physics Working Group Report
G. Brooijmans, B. Gripaios, F. Moortgat +141
We present the activities of the "New Physics" working group for the "Physics at TeV Colliders" workshop (Les Houches, France, 30 May-17 June, 2011). Our report includes new agreem…
Dark Baryogenesis
Devin G. E. Walker
We first suggested a scenario in which a generic, dark chiral gauge group undergoes a first order phase transition in order to generate the observed baryon asymmetry in the univers…
Using M_T2 to Distinguish Dark Matter Stabilization Symmetries
Kaustubh Agashe, Doojin Kim, Devin G. E. Walker +1
We examine the potential of using colliders to distinguish models with parity (Z_2) stabilized dark matter (DM) from models in which the DM is stabilized by other symmetries, takin…
Distinguishing Dark Matter Stabilization Symmetries Using Multiple Kinematic Edges and Cusps
Kaustubh Agashe, Doojin Kim, Manuel Toharia +1
We emphasize that the stabilizing symmetry for dark matter (DM) particles does not have to be the commonly used parity (Z_2) symmetry. We therefore examine the potential of the col…
Supermodels for early LHC
Christian W. Bauer, Zoltan Ligeti, Martin Schmaltz +2
We investigate what new physics signatures the LHC can discover in the 2009-2010 run, beyond the expected sensitivity of the Tevatron data by 2010. We construct "supermodels", for…
Dark Matter Stabilization Symmetries from Spontaneous Symmetry Breaking
Devin G. E. Walker
We present a class of models in which the dark matter stabilization symmetry is generated by spontaneous symmetry breaking. These models naturally correlate the dark and electrowea…