Conveners
Dark Matter: Monday morning
- Rafael Lang (Purdue University)
Dark Matter: Monday afternoon
- Enectali Figueroa-Feliciano (Northwestern University)
Dark Matter: Tuesday morning
- Rafael Lang (Purdue University)
Dark Matter: Tuesday afternoon
- Enectali Figueroa-Feliciano (Northwestern University)
Dr
Seodong Shin
(Yonsei University)
7/31/17, 10:45 AM
Dark Matter
Presentation
I will talk about a novel dark matter (DM) detection strategy for the models with non-minimal dark sector such as "inelastic boosted DM", which expects a secondary cascade signature after an inelastic and relativistic scattering of a light dark matter component. I will discuss the detection prospects at DUNE. The boosted DM can be produced both in the current universe and in the fixed target.
Mr
Brett Cornell
(Caltech)
7/31/17, 11:00 AM
Dark Matter
Presentation
The SuperCDMS Soudan experiment searches for direct interactions of WIMP dark matter particles with germanium nuclei. The experiment uses detectors (iZIPs) with sophisticated ionization and phonon sensors to distinguish nuclear-recoils from electron-recoil backgrounds or surface contaminants. We report the result of an analysis, based on a ∼1700 kg-day exposure, that seeks to maximize our...
Dr
Orin Harris
(NEIU)
7/31/17, 11:15 AM
Dark Matter
Presentation
The PICO-60 dark matter detector has recently concluded its first run with a C3F8 target, producing a new world-leading limit on WIMP-proton spin-dependent interactions, a factor of 17 stronger than PICO’s previous leading result. This result is obtained from a blind 30 live-day run that contained zero WIMP candidate events and re-affirms the dominance of the bubble chamber technology in...
Dr
Javier Tiffenberg
(Fermilab)
7/31/17, 11:30 AM
Dark Matter
Presentation
We present the status and prospects of the Sub-Electron Noise Skipper Experimental Instrument (SENSEI) currently operating in the MINOS cavern at Fermilab. SENSEI uses a non-destructive readout technique to achieve stable readout for a thick fully depleted silicon CCD in the far sub-electron regime (∼ 0.05 e- rms/pix). This is the first instrument to achieve discrete sub-electron counting...
Dr
Juan Estrada
(FNAL)
7/31/17, 11:45 AM
Dark Matter
Presentation
Millimeter-thick charge-coupled devices (CCDs) are outstanding particle detectors. Although initially developed for near-infrared astronomy, the low pixel noise also makes them the most sensitive detectors to signals from ionizing radiation. By virtue of their very low energy threshold (<100 eV of ionizing energy) and their unique capabilities for background characterization based on their...
Andrew Whitbeck
(Fermilab), Dr
Philip Schuster
(SLAC)
7/31/17, 12:00 PM
Dark Matter
Presentation
The Light Dark Matter eXperiment (LDMX) proposes a high-statistics search for dark matter in fixed-target electron-nucleus collisions, ultimately exploring thermal relic dark matter over most of the viable sub-GeV mass range to a decisive level of sensitivity. To achieve this goal, LDMX employs the missing momentum technique, where electrons scattering in a thin target can produce dark matter...
Prof.
Matthew Szydagis
(University at Albany, SUNY)
7/31/17, 1:30 PM
Dark Matter
Presentation
New results from the Large Underground Xenon (LUX) detector, a 100-kg-scale, 2-phase xenon direct dark matter search experiment, will be shared. Dark matter, the missing ~25% of the mass-energy content of the universe, is sought in new ways, using effective field theory operators to extend the search to higher-mass Weakly Interacting Massive Particles (WIMPs), spin-dependent interaction...
Chris Tunnell
(University of Oxford)
7/31/17, 1:45 PM
Dark Matter
Presentation
XENON1T is the current experiment of the XENON dark matter search program based on dual-phase (liquid-gas) xenon time projection chambers (TPCs) of increasing target mass and decreasing background. The experiment was constructed and assembled over the past 3 years at the INFN Laboratori Nazionali del Gran Sasso (LNGS). The XENON1T detector is the first multi-ton scale liquid xenon (LXe) TPC...
Prof.
Kaixuan Ni
(UC San Diego)
7/31/17, 2:00 PM
Dark Matter
Presentation
With XENON1T leading the search for dark matter, the XENON collaboration has started to plan an upgrade of the detector for the next phase, referred to as XENONnT. The XENONnT experiment will utilize the already built and functioning XENON1T infrastructures, such as the cryogenic system, Kr distillation system, and Xe storage and recovery system, with the time projection chamber (TPC) as the...
Maria Elena Monzani
(SLAC National Accelerator Laboratory)
7/31/17, 2:15 PM
Dark Matter
Presentation
The nature and origin of Dark Matter are among the most compelling mysteries of contemporary science. For over three decades, physicists have been trying to detect Dark Matter particles via collisions on target nuclei, with little success.
The LZ collaboration is designing a massive Dark Matter detector, to be installed at the 4850 level of the Sanford Underground Research Facility in Lead,...
Dr
Amy Cottle
(Fermi National Accelerator Laboratory)
7/31/17, 2:30 PM
Dark Matter
Presentation
The LUX-ZEPLIN experiment will use a seven tonne dual-phase xenon TPC for the direct detection of dark matter. Understanding and mitigating background signals are crucial in its aim to push to an unprecedented sensitivity for WIMPs. I will describe the methods used to assess these, including simulations that characterise the electron and nuclear recoil responses in the detector from both...
Daniel Bowring
(Fermilab)
7/31/17, 2:45 PM
Dark Matter
Presentation
The ADMX experiment is now taking data that is sensitive for the first time to a possible QCD axion with couplings to photons that can provide a solution to the strong-CP problem and account for a sizable amount of the dark matter of the universe.
Mr
Abhishek Mohapatra
(The Ohio State University)
7/31/17, 3:00 PM
Dark Matter
Presentation
The number of nonrelativistic axions can be changed by inelastic reactions that produce relativistic axions or photons. Any even number of nonrelativistic axions can scatter inelastically into two relativistic axions. Any odd number of axions can annihilate into two photons.
This reaction produces a monochromatic radio-frequency signal at an odd-integer harmonic of the fundamental frequency...
Prof.
Can Kilic
(University of Texas at Austin)
8/1/17, 10:45 AM
Dark Matter
Presentation
I will present a mechanism where the dark matter abundance arises from asymmetries generated in the early universe, even though the distribution of dark matter may appear symmetric today. This mechanism can be realized in the framework of of flavored dark matter, among others. I will discuss the experimental signatures of this setup, as well as generic phenomenological features of the flavored...
Jason Kumar
(University of Hawaii)
8/1/17, 11:00 AM
Dark Matter
Presentation
For models in which dark matter annihilation is Sommerfeld-enhanced, the annihilation cross section increases at low relative velocities.
Dwarf spheroidal galaxies (dSphs) have low characteristic dark matter particle velocities and are thus ideal candidates to study such models.
In this paper we model the dark matter phase space of dSphs as isotropic and spherically-symmetric, and...
Ms
Katarzyna Frankiewicz
(National Centre for Nuclear Research)
8/1/17, 11:15 AM
Dark Matter
Presentation
Indirect searches for dark matter using data collected with the Super-Kamiokande detector in years 1996-2016 were performed. The excess of neutrinos from possible dark matter sources such as Sun, Earth and Galactic Center, compared to the expected atmospheric neutrino background was searched. Event samples including both electron and muon neutrinos covering a wide range of energies were used,...
Dr
J. Patrick Harding
(Los Alamos National Laboratory)
8/1/17, 11:30 AM
Dark Matter
Presentation
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 0.5 TeV - 100 TeV gamma-rays and cosmic-rays. The HAWC observatory performed an indirect search for dark matter via GeV-TeV photons resulting from dark matter annihilation and decay considering various sources, including dwarf spheroidal galaxies (dSphs), the M31 galaxy, and the...
Joshua Berger
(University of Wisconsin-Madison)
8/1/17, 11:45 AM
Dark Matter
Presentation
We construct a thermal dark matter model with the dark matter annihilations mediated by a resonance to explain the positron excess observed by PAMELA, Fermi-LAT and AMS-02 and to satisfy other experimental constraints. Based on a spontaneous breaking global symmetry of SU(3)/SU(2)xU(1), we provide a natural explanation for why the resonance mass is very close to twice of the dark matter mass....
Tao Ren
(UC Riverside)
8/1/17, 12:00 PM
Dark Matter
Presentation
Self-interacting dark matter (SIDM) is a simple and well motivated scenario that demonstrates great potential to solve small scale issues. One recent example is the diversity problem due to the failure of the lambda cold dark matter (LambdaCDM) paradigm to explain the diverse behavior in observed rotation curves, especially for dwarf galaxies. To address this issue in SIDM paradigm, we follow...
Dr
Chen Zhou
(University of Wisconsin-Madison)
8/1/17, 1:30 PM
Dark Matter
Presentation
A search for new physics phenomena is presented using events with missing transverse momentum and a Standard Model Higgs boson decaying into two photons. This search is based on 13 TeV proton-proton collision data collected by the ATLAS detector at the LHC in 2015 and 2016, corresponding to an integrated luminosity of 36.1 $fb^{−1}$. No significant excess over the Standard Model expectation is...
Mr
Efe Yigitbasi
(Boston University)
8/1/17, 1:45 PM
Dark Matter
Presentation
Several extensions of standard model predict dark matter production in association with a Higgs boson. In this talk the results of a search for such models in final states with large missing transverse momentum and a Higgs boson decaying to $b\bar{b}$ will be presented. The search is performed with the ATLAS detector using 36 fb-1 of pp collisions at a center-of-mass energy of 13 TeV at the...
Mr
Yicheng Guo
(University of Michigan; University of Science and Technology of China)
8/1/17, 2:00 PM
Dark Matter
Presentation
A search for dark matter particles produced in association with a hadronically decaying W or Z boson with the ATLAS experiment at the LHC is reported. The search uses data corresponding to an integrated luminosity of 36.1/fb in proton-proton collisions at a centre-of-mass energy (√s) of 13 TeV. No significant excess over the Standard Model prediction is observed. The search results are...
Dr
Tomonari Miyashita
(California Institute of Technology)
8/1/17, 2:15 PM
Dark Matter
Presentation
We report on a search for single-photon events in 53 $fb^{-1} of $e^+e^- $ collision data collected with the BaBar
detector at the PEP-II $B$-factory. We look for events with a single high-energy photon and a large
missing momentum and energy, consistent with production of a spin-1 particle $A’$ through the
process $e^+e^- \to \gamma A’$, $A’ \to invisible$. Such particles, referred to...
Bertrand Echenard
(Caltech)
8/1/17, 2:30 PM
Dark Matter
Presentation
Many models of New Physics postulate the existence new gauge bosons mediating interactions between “dark sectors” and the Standard Model. We present a search for a dark boson Z' coupling only to the second and third generation of leptons in the reaction e+e- -> mu+mu-Z', Z' -> mu+mu- with the full BABAR dataset. No significant signal is observed and limits improving upon bounds derived from...
Cristiana Principato
(University of Virginia)
8/1/17, 2:45 PM
Dark Matter
Presentation
We present the status of the a dark matter search using a dataset collected with an upward-going muon trigger at NOvA.
Weakly Interactive Massive Particles are a theoretical potential non-baryonic form of Dark Matter.
The nature of Dark Matter is one of the most interesting open
questions in modern physics. Evidence for DM existence comes from cosmological observations but the discovery...
Prof.
Howard Baer
(University of Oklahoma)
8/1/17, 3:00 PM
Dark Matter
Presentation
The LHC did not discover new particles beyond the Standard Model Higgs boson at 7 and 8 TeV, or in the first data samples at 13 TeV. However, the complementary nature of physics with e+e- collisions still offers many interesting scenarios in which new particles can be discovered at the ILC. These scenarios take advantage of the capability of e+e- collisions to observe particles with missing...