Unravelling Dark Matter Conference - 2011

25 talks

September 22, 2011 - September 24, 2011

C11028

Collection Type Conference/School

Description Unravelling Dark Matter Conference

Displaying 1 - 12 of 25

Dark Matter Detection with Liquid Xenon and Liquid Helium

Daniel McKinsey Yale University
September 24, 2011 PIRSA:11090087
Particle Physics
Dark matter search at SNOLAB with DEAP-3600

Bei Cai Queen's University
September 24, 2011 PIRSA:11090127
Particle Physics
A Composite Model of Dark Matter

David McKeen University of Washington
September 24, 2011 PIRSA:11090116
Particle Physics
Signals of Hidden Antibaryonic Dark Matter

David Morrissey TRIUMF (Canada's National Laboratory for Particle and Nuclear Physics)
September 24, 2011 PIRSA:11090115
Particle Physics
Hidden Sector Dark Matter: Chasing the CoGeNT/DAMA/CRESST Ambulances

James Cline McGill University
September 24, 2011 PIRSA:11090123
Particle Physics
Direct Detection Experiments as Neutrino _b Observatories

Josef Pradler Institut für Hochenergiephysik (HEPHY) - Institut für Hochenergie Physik
September 23, 2011 PIRSA:11090113
Particle Physics
Dark Matter from Minimal Flavor Violation

Brian Batell University of Pittsburgh
September 23, 2011 PIRSA:11090073
Particle Physics
Structure in the Phase Space and Dark Matter Astronomy

Niayesh Afshordi University of Waterloo
September 23, 2011 PIRSA:11090081
Particle Physics
The Small-Scale Structure of Galactic Dark Matter

Mark Vogelsberger Massachusetts Institute of Technology (MIT) - Department of Physics
September 23, 2011 PIRSA:11090103
Particle Physics
Tidal Streams and Debris Flows: Dark Matter Velocity Substructure and Direct Detection

Michael Kuhlen Institute for Advanced Study (IAS)
September 23, 2011 PIRSA:11090085
Particle Physics
On the Relation Between the Invisible Higgs Decay and Dark Matter Scattering Cross Sections

Maxim Pospelov University of Minnesota
September 23, 2011 PIRSA:11090107
Particle Physics
A CoGeNT Modulation Analysis

Patrick Fox Fermi National Accelerator Laboratory (Fermilab)
September 23, 2011 PIRSA:11090084
Particle Physics

Dark Matter Detection with Liquid Xenon and Liquid Helium

Daniel McKinsey Yale University
September 24, 2011 PIRSA:11090087
Particle Physics
TBA
Dark matter search at SNOLAB with DEAP-3600

Bei Cai Queen's University
September 24, 2011 PIRSA:11090127
Particle Physics
DEAP-3600 is a dark matter experiment using 3600 kg of liquid argon for direct WIMP search, with a target sensitivity to the spin-independent WIMP-nucleon cross-section of 10^{-46} cm^2. The detector is currently under construction at SNOLAB, located 2 km underground in Sudbury. In this single-phase liquid argon experiment, discrimination of beta/gamma backgrounds from the WIMP-induced nuclear recoil signal will be achieved by analyzing the pulse shape of scintillation light. A prototype 7-kg liquid argon detector has been taking data at SNOLAB since 2007 and has allowed extensive background studies, including significant radon and surface contamination reduction. The status of the experiment and of background reduction studies will be presented.
A Composite Model of Dark Matter

David McKeen University of Washington
September 24, 2011 PIRSA:11090116
Particle Physics
We describe a model of composite dark matter, bound by an asymptotically free gauge interaction. This leads to a novel relic history and to an enhancement of the present-day dark matter annihilation cross section. Potential indirect detection signals are discussed.
Signals of Hidden Antibaryonic Dark Matter

David Morrissey TRIUMF (Canada's National Laboratory for Particle and Nuclear Physics)
September 24, 2011 PIRSA:11090115
Particle Physics
Many explanations have been proposed for the origin of dark matter and the creation of the baryon asymmetry, but very few of them address both cosmological puzzles at once. At the same time, the observed energy densities of dark matter and baryons are within a factor of five of each other hinting at a possible common origin. In this talk I will present a novel mechanism that generates both densities at once, with the dark matter species carrying a net baryon number. This gives rise to new and unusual dark matter signals such as the destruction of nucleons by dark matter scattering. I will describe some of these signals, and discuss how they might be detected in current and upcoming experiments and astrophysical observations.
Hidden Sector Dark Matter: Chasing the CoGeNT/DAMA/CRESST Ambulances

James Cline McGill University
September 24, 2011 PIRSA:11090123
Particle Physics
I discuss the challenges for building models of ~10 GeV dark matter that can accommodate the numerous astrophysical constraints that threaten to exclude them, as well as direct detection constraints. A U(1)xU(1) hidden sector model with isospin violation, inelastic couplings, and annihilation into invisible products is suggested. I will also discuss similar but simpler models that could simultaneously explain excess 511 keV gamma rays from the galactic center and direct detection of light dark matter.
Direct Detection Experiments as Neutrino _b Observatories

Josef Pradler Institut für Hochenergiephysik (HEPHY) - Institut für Hochenergie Physik
September 23, 2011 PIRSA:11090113
Particle Physics
Dark Matter from Minimal Flavor Violation

Brian Batell University of Pittsburgh
September 23, 2011 PIRSA:11090073
Particle Physics
Stability on cosmological time scales constitutes one of the few robust guiding principles in the formulation of a theory of dark matter. This suggests the existence of a stabilizing symmetry associated to dark matter. I will explore several examples of stabilizing symmetries beyond the canonical Z_2 parity, such as Abelian Z_N discrete gauge symmetries, Non-Abelian discrete symmetries, and flavor symmetries.
Structure in the Phase Space and Dark Matter Astronomy

Niayesh Afshordi University of Waterloo
September 23, 2011 PIRSA:11090081
Particle Physics
The Small-Scale Structure of Galactic Dark Matter

Mark Vogelsberger Massachusetts Institute of Technology (MIT) - Department of Physics
September 23, 2011 PIRSA:11090103
Particle Physics
In my talk I will discuss the relevant astrophysical input for dark matter detection experiments, i.e. the expected distribution of dark matter at the solar position. Based on high resolution N-body simulations I will then show that the formation history of the galactic dark matter halo leaves imprints in the velocity and energy distribution. In the second part of my talk I will focus on the fine-grained dark matter structure and discuss the importance of caustics and streams for detection experiments.
Tidal Streams and Debris Flows: Dark Matter Velocity Substructure and Direct Detection

Michael Kuhlen Institute for Advanced Study (IAS)
September 23, 2011 PIRSA:11090085
Particle Physics
High resolution simulations of Galactic Cold Dark Matter halos reveal staggering amounts of substructure, both in configuration and velocity space. In this talk I will focus on the latter. In addition to spatially localized subhalos and streams, I will also discuss so-called debris flows -- incompletely phase-mixed material originating in numerous accretion and merging events that are the hallmark of the hierarchical build-up of the host halo. Finally, I will briefly discuss the presence and direct detection consequences of a dark disk in the Eris simulation, a cosmological simulation including baryonic physics of the formation of a realistic looking disk galaxy.
On the Relation Between the Invisible Higgs Decay and Dark Matter Scattering Cross Sections

Maxim Pospelov University of Minnesota
September 23, 2011 PIRSA:11090107
Particle Physics
The simplest singlet Higgs-portal dark matter model predicts large/dominant Higgs ->2 DM decay widths in the region of parameter space with m_DM < m_h/2, and Higgs mass below 140 GeV. On the other hand, the direct detection experiments such as Xenon100 put stringent constraints on the scattering DM-nucleon scattering cross section and seemingly exclude large part of the parameter space where the invisible Higgs decay dominates over visible modes. I analyze the robustness of this statement in the next-to-minimal models to show that the relation between invisible Higgs width and dark matter cross section does not hold in general. I discuss a number of theoretical scenarios where WIMP abundance is regulated by the Higgs portal, the direct detection signals are small AND Higgs decay width is dominated by the decay to dark matter.
A CoGeNT Modulation Analysis

Patrick Fox Fermi National Accelerator Laboratory (Fermilab)
September 23, 2011 PIRSA:11090084
Particle Physics
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 data, and find a significant component at high (Eee \gtap 1.5 keVee) energies. We find that standard elastic WIMPs in a Maxwellian halo do not provide a good description of the modulation. We consider the possibility of non-standard halos, using halo independent techniques, and find a good agreement with the DAMA modulation for QNa

Title	Speaker(s)	Date	Talk Type	Info
Dark Matter Detection with Liquid Xenon and Liquid Helium	Daniel McKinsey	2011-09-24	Conference	View details
Dark matter search at SNOLAB with DEAP-3600	Bei Cai	2011-09-24	Conference	View details
A Composite Model of Dark Matter	David McKeen	2011-09-24	Conference	View details
Signals of Hidden Antibaryonic Dark Matter	David Morrissey	2011-09-24	Conference	View details
Hidden Sector Dark Matter: Chasing the CoGeNT/DAMA/CRESST Ambulances	James Cline	2011-09-24	Conference	View details
Direct Detection Experiments as Neutrino _b Observatories	Josef Pradler	2011-09-23	Conference	View details
Dark Matter from Minimal Flavor Violation	Brian Batell	2011-09-23	Conference	View details
Structure in the Phase Space and Dark Matter Astronomy	Niayesh Afshordi	2011-09-23	Conference	View details
The Small-Scale Structure of Galactic Dark Matter	Mark Vogelsberger	2011-09-23	Conference	View details
Tidal Streams and Debris Flows: Dark Matter Velocity Substructure and Direct Detection	Michael Kuhlen	2011-09-23	Conference	View details
On the Relation Between the Invisible Higgs Decay and Dark Matter Scattering Cross Sections	Maxim Pospelov	2011-09-23	Conference	View details
A CoGeNT Modulation Analysis	Patrick Fox	2011-09-23	Conference	View details

Unravelling Dark Matter Conference - 2011

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