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Sally Dawson (BNL)02/10/2018, 09:00
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Prof. Adam Ritz (University of Victoria)02/10/2018, 09:10
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Prof. Neal Weiner (NYU)02/10/2018, 09:45
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Timothy Nelson (SLAC)02/10/2018, 10:50
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Prof. Scott Hertel (U Mass Amherst)02/10/2018, 11:25
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Prof. Josef Pradler (Austrian Academy of Sciences)02/10/2018, 13:30
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Dr Simon Knapen (Institute of Advanced Study)02/10/2018, 14:05
I will discuss the direct detection of dark matter (DM) with polar materials, where single production of optical or acoustic phonons gives excellent reach to scattering of sub-MeV DM for both scalar and vector mediators. Using Density Functional Theory (DFT), we calculate the material-specific matrix elements, focusing on GaAs and sapphire, and show that DM scattering in an anisotropic crystal...
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Dr Malte Buschmann (University of Michigan)02/10/2018, 14:40
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Prof. Neal Weiner (NYU)02/10/2018, 16:00
We have understood robustly that the overwhelming majority of matter throughout our galaxy and the universe is something other than what we are made of. We remain profoundly ignorant of what it is. In this talk, Neal Weiner will describe the range of ideas that have arisen as to what this mysterious stuff might be, where it came from, and how to look for it. He will detail the progress made in...
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Tracy Slayter (MIT)03/10/2018, 09:00
I will review limits on dark matter and dark sectors from indirect searches, with a particular emphasis on what we can learn from probes of the early universe. I will discuss the recent claim of a primordial 21cm absorption signal by the EDGES experiment, and its possible implications for dark-sector physics.
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Matthew Buckley (Rutgers University)03/10/2018, 09:35
Gravity provides both the evidence for dark matter and all of our present knowledge about its properties. By understanding the detailed structure of gravitationally bound objects in our Universe, we can probe the particle physics of dark matter in a way that is completely orthogonal to the Earth-based high-energy physics searches for dark matter. Such efforts will require close collaboration...
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Dr Masha Baryakhtar (New York University)03/10/2018, 10:40
The LIGO detection of gravitational waves has opened a new window on the universe. I will discuss how the process of superradiance, combined with gravitational wave measurements, makes black holes into nature's laboratories to search for new light bosons, from axions to dark photons. When a bosonic particle's Compton wavelength is comparable to the horizon size of a black hole, superradiance...
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Prof. Anson Hook (University of Maryland)03/10/2018, 11:15
We propose using interferometry of circularly polarized light as a mechanism by which to test for axion dark matter. These interferometers differ from standard interferometers only by the addition of a few quarter waveplates to preserve the polarization of light upon reflection. We show that using current technology, interferometers can probe new regions of axion parameter space up to a couple...
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Dr Yoni Kahn (University of Chicago)03/10/2018, 11:50
I will argue that axion dark matter may be detectable through narrow radio lines emitted from neutron stars. Neutron star magnetospheres host both a strong magnetic field and a plasma frequency that increases towards the neutron star surface. As the axions pass through the magnetosphere, they can resonantly convert into radio photons when the plasma frequency matches the axion mass, making the...
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Jeremy Sakstein (UPenn)03/10/2018, 14:00
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Rachel A. Rosen (Columbia University)03/10/2018, 14:35
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amarjit soni (bnl)03/10/2018, 15:10
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Fabio Bossi (INFN-Frascati)03/10/2018, 16:00
Among the theoretical models addressing the dark matter problem, the category based on a secluded sector is attracting increasing interest. The PADME experiment, at the Laboratori Nazionali di Frascati (LNF) of INFN, is designed to be sensitive to the production of a low mass gauge boson A’ of a new U(1) symmetry holding for dark particles. This 'dark photon’ is weakly coupled to the photon of...
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Neelima Sehgal (Stony Brook University)03/10/2018, 16:25
Abstract: I will show how ultra-high-resolution measurements of the gravitational lensing of the Cosmic Microwave Background (CMB) can be used to measure the small-scale matter power spectrum. A robust measurement of structure on scales below 10 kiloparsecs today (M < 10^9 solar masses) with lensing of the CMB requires a telescope with roughly 20 arcsecond resolution or better, and would...
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Jae Hyeok Chang (Stony brook University)03/10/2018, 16:50
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Sheakha Aldaihan (Indiana University)03/10/2018, 17:15
Abstract: Various theories beyond the Standard Model possess weakly interacting sub-eV particles often referred to as WISPs. Such particles, if they exist, would mediate long-range forces between macroscopic bodies. Strong constraints exist on such ultralight bosons with scalar and vector couplings to fermions from “spin-independent” experiments involving unpolarized test bodies. In contrast,...
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03/10/2018, 18:30
No-host Dinner
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Sea Basin Restaurant
642 Route 25A, Rocky Point, NY
631-744-1643
October 3, 2018, 6:30 PM
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Alexander Friedland (SLAC National Accelerator Laboratory)04/10/2018, 09:00
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Remington Tyler Thornton (LANL)04/10/2018, 09:50
Abstract: MiniBooNE has recently updated both their short baseline neutrino oscillation and sub-GeV dark matter analyses. Both results have strong implications for the dark sector. The oscillation analyses suggests the existence of at least one sterile neutrino, while the null results from the sub-GeV dark matter search have placed the most stringent limits to date, on the vector portal dark...
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Yu-Dai Tsai (Cornell University / Fermilab)04/10/2018, 10:15
We set constraints on millicharged particles (mCPs) based on electron scattering data from MiniBooNE and the Liquid Scintillator Neutrino Detector (LSND). Both experiments are found to provide new (and leading) constraints in certain mCP mass windows: 5 − 35 MeV for LSND and 100 − 180 MeV for MiniBooNE. Furthermore, we provide projections for the ongoing Fermilab SBN program, the Deep...
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Emma Torró ( University of Washington)04/10/2018, 11:00
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Adish Vartak (CERN)04/10/2018, 11:25
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Philip Harris (MIT)04/10/2018, 11:50
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Kuver Sinha (University of Oklahoma)04/10/2018, 14:00
Axion-like particles (ALPs) produced in the core of a neutron star can convert to photons in the magnetosphere, leading to possible signatures in the soft and hard X-ray emission from these sources. We study these signatures taking the magnetar SGR 1806-20 as an example. In particular, assuming ALP emission rates from the core that are just subdominant to neutrino emission, the parameter...
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Gonzalo Alonso Alvarez (Univeristy of Heidelberg)04/10/2018, 14:25
It is well known that light scalar fields present during inflation are coherently excited. We show that if the field couples to gravity in a non-minimal way, the fluctuations at large scales are suppressed with respect to the small scales ones. This fact allows for the field excitations to make a sizeable contribution to the energy density of the universe without generating too large...
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Daniel Egaña (Stony Brook University)04/10/2018, 14:50
We study the simplest model of a dark sector that forms structure via cooling, in analogy to the baryonic sector.
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This dark sector is an asymmetric, sub-dominant component of dark matter, that consists of a dark electron and a dark photon.
The dark-electron perturbations collapse and fragment due to bremsstrahlung cooling, forming astronomical objects of varying size and compactness. These... -
Diallo Boye (University of Johannesburg)04/10/2018, 15:15
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Konstantinos Nikolopoulos (University of Birmingham)04/10/2018, 16:00
The New Experiments With Spheres-Gas (NEWS-G) is dedicated to the direct search for Dark Matter candidates in the 0.1 – 10 GeV range. The experiment uses the novel Spherical Proportional Counter detector, which exhibits a number of key features including: a) low energy thresholds, few tens of eV, owing to low detector capacitance independently of the volume and high gain operation; b) small...
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Matthew Szydagis (SUNY Albany)04/10/2018, 16:25
We have all heard of the cloud and bubble chambers of course, and the latter in the context of direct WIMP dark matter detection even. However, no one has explored a 3rd phase transition, into solid, until now that is. This talk will introduce the snowball chamber, which utilizes a supercooled liquid, just purified water in the prototype. An incoming particle triggers nucleation in the liquid,...
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Sankha S Chakrabarty (Department of Physics, University of Florida)04/10/2018, 16:50
Authors: Sankha S Chakrabarty and Pierre Sikivie
Caustic rings of dark matter with tricusp cross-section were predicted to lie in the galactic disk. In the self-similar evolution of the dark halo, their radii increase on cosmological time scales at a rate of order 1 kpc/Gyr. When a caustic ring passes through the orbit of a star, the orbit is strongly perturbed. We find that a star moving in...
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Igal JAEGLE (University of Florida at Gainesville)04/10/2018, 17:15
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Laura Jeanty ( University of Oregon)05/10/2018, 09:00
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Babette Dobrich (CERN)05/10/2018, 09:25
The high-intensity setup, trigger system flexibility, and detector performance -- high-frequency tracking of beam particles, redundant PID, ultra-high-efficiency photon vetoes ― make NA62 particularly suitable for searching new-physics effect from different scenarios. Results from a search for invisible dark photons produced from pi0 decays are given. Fixed target experiments are a...
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Christopher Hearty (University of British Columbia)05/10/2018, 09:50
I will review BaBar's searches for the direct production of new particles in the context of dark sector and other models. Such searches are a high priority for the early running period of Belle II. I will discuss the status of Belle II and the prospects of these searches.
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Lucie Tvrznikova (Lawrence Berkeley National Lab)05/10/2018, 10:15
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Paul J. Steinhardt (Princeton University)05/10/2018, 11:10
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05/10/2018, 12:00
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Enrico Rinaldi (BNL)Models of composite dark matter, originating from a new strongly coupled dark sector, have a very interesting phenomenology. To make robust predictions in these models one often need to investigate non-perturbative effects due to the strong self interactions. Lattice field theory methods and numerical simulations are well suited for this task and contribute to a solid uncertainty...Go to contribution page
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Alexander Friedland (SLAC National Accelerator Laboratory)
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Eric Kramer (Harvard University)After nearly a century of searching, the nature of dark matter continues to elude us.While Ockham's razor may at face value want a favor a dark sector with one component, the complexity of the visible sector urges us to consider dark sectors with multiple components, including possibly dissipative interactions. In a galaxy like the Milky Way, these interactions would lead to cooling of...Go to contribution page
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Sergei Dubovsky (New York University)
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Hitoshi Murayama (Berkeley)
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Michael Duerr (DESY)A reliable comparison of different dark matter searches requires models that satisfy certain consistency conditions like gauge invariance and perturbative unitarity. These conditions can easily be satisfied in U(1)' extensions of the Standard Model, where a fermionic dark matter candidate as well as a new Z' gauge boson obtain their mass from the spontaneous breaking of the U(1)' by a...Go to contribution page
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Antonio Boveia
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Arun TadepalliThe SeaQuest E906 experiment is a fixed target Drell-Yan experiment which is aimed at studying the anti-quark distributions in the nucleon and nuclei. 120 GeV protons from the Main Injector at Fermilab could also be used to search for massive dark gauge bosons or dark photons that could be generated when a proton beam dump interacts with a 5m long Fe beam dump. SeaQuest takes advantage of...Go to contribution page
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Natalia Toro (SLAC)
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Yury Kolomensky (LBL)
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Andrea CoccaroThe postulation of a Hidden Sector to complement the Standard Model offers elegant solutions to one of the most intriguing questions in elementary particle physics, being the particle nature of dark matter. The discovery of a fundamental scalar particle compatible with the Higgs boson paved the way for looking for dark matter with novel methods. In this contribution, I will review recent...Go to contribution page
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Ted Kolberg
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Tien Tien Yu
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Ming Xiong Liu (Los Alamos National Laboratory)Through kinetic mixing, the postulated dark photon and dark Higgs particles could be produced in the Drell-Yan like q-qbar and gluon-gluon fusion processes in high energy proton + nucleus collisions, respectively. Starting from 2017, the E-1067 experiment at Fermilab will carry out the first direct search for such particle productions in the mass range 0.2 ~ 10 GeV in parasitic with the...Go to contribution page
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Raphael Flauger (University of Texas at Austin)
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Geraldine Servant (CERN)Strong first-order cosmological phase transitions produce a stochastic gravitational wave background. We discuss the resulting contributions from bubble collisions, magnetohydrodynamic turbulence, and sound waves, and estimate the total corresponding signal predicted in gravitational waves. We demonstrate that LISA is able to probe many well-motivated scenarios beyond the Standard Model of...Go to contribution page
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Bhuvnesh Jain (UPenn)
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Nathaniel Craig
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Andre DeGouvea (Northwestern)
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Prof. Ashutosh Kotwal (Duke University)The Large Hadron Collider has been a grand success with the discovery of the Higgs boson, with bright prospects for additional discoveries since the recent increase in collider energy and the anticipated large datasets. Big open questions such as the nature of dark matter, the origin of the matter-antimatter asymmetry in the Universe, and the theoretical puzzle of the finely-tuned parameters...Go to contribution page
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Brian Batell (Chicago), Mr Brian Batell (Perimeter Institute)
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Gianluca LamannaKaon experiments at CERN (NA48/2 and NA62) study decays in flight of secondary charged kaons produced by 400 GeV/c protons from the SPS accelerator hitting a Beryllium target. The NA48/2 experiment was exposed to 2x10^{11} kaon decays in 2003-2004, and NA62 is set to surpass this figure by a factor of 50 in 2016-2018. Prospects for the dark photon, heavy neutral lepton and axion-like particle...Go to contribution page
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Yu-Dai Tsai (Cornell University)We present a novel dark matter candidate, an elastically decoupling relic, which is a cold thermal relic whose present abundance is determined by the cross section of its elastic scattering on standard model particles. The dark matter candidate is predicted to have a mass ranging from a few to a few hundred MeV, and an elastic scattering cross section with electrons, photons and/or neutrinos...Go to contribution page
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Igal Jaegle (University of Hawaii at Manoa)The dark photon, A′, the dark Higgs boson, h′, and the dark vector gauge boson, U', are hypothetical constituents featured in a number of recently proposed Dark Sector Models. We will present searches for these particles in the Belle data and discuss prospects in the future Belle II data.Go to contribution page
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Wei Xue (MIT)Dark photons appear in many well-motivated dark matter scenarios, leading to a worldwide effort to search for them. We propose some novel search methods for dark photons at the LHCb experiment. In this talk, I will focus on the inclusive search for dark photons at the LHCb experiment based on both prompt and displaced di-muon resonances. The dark photon rate can be directly inferred from the...Go to contribution page
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Matt Strassler (Harvard)
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Alexander Natale (KIAS)The general strategy for dark matter (DM) searches at colliders currently relies on simplified models in order to describe the interactions between the Standard Model (SM) and DM and potential collider signatures at the LHC. A recently proposed UV-complete simplified model with t-channel mediators improves the existing simplified DM models in two important respects: (i) the full SM gauge...Go to contribution page
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Ethan Brown (RPI)
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Savannah Thais (Yale University)The existence of a dark sector vector boson (Zd) is well motivated by theory and experiment; models add a U(1) gauge symmetry to the standard model which introduces a new gauge field Zd with kinetic mixing epsilon (I'll add the actual symbol) and a Higgs doublet with mass mixing kappa. We can thus use the Higgs as a portal to look for such a particle at the LHC. In particular, we can expand...Go to contribution page
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Ely Kovetz (John Hopkins University)
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Joerg Jaeckel (Heidelberg)
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Eder Izaguirre (BNL)
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Samuel McDermott (YITP)Supernova 1987A created an environment of extremely high temperatures and nucleon densities, providing an opportunity to set bounds on a wide range of theories of new physics. We present corrected bounds on hidden sector models, incorporating a wide range of new physical effects on the production, including some novel corrections to the high-mixing-angle calculation. These bounds dramatically...Go to contribution page
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