# IPA 2017

8-10 May 2017
Discovery Building
US/Central timezone
Home > Contribution List
Displaying 88 contributions out of 88
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
MicroBooNE is a liquid argon Time Projection Chamber (TPC) located in the Booster Neutrino Beam at Fermilab. One of its main goals is to study the >3σ excess observed at low energy (Eν ~ 200-600 MeV) by the MiniBooNE experiment, which was located in the same beam. Two independent analyses are ongoing in MicroBooNE to study this possible excess. One of them uses Deep Learning Convolutional ... More
Presented by Dr. Adrien HOURLIER on 9 May 2017 at 15:05
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
In eight years of operation, the Fermi Large Area Telescope (LAT) has detected a large sample of cosmic-ray protons. The LAT's wide field of view and full-sky coverage make it an excellent instrument for studying anisotropies in the arrival directions of protons at all angular scales. These capabilities enable the LAT to make a full-sky 2D measurement of cosmic-ray proton anisotropy complementary ... More
Presented by Matthew MEEHAN on 9 May 2017 at 16:30
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
In this talk, I will discuss leptonic unitarity violation at energy scale much lower than the electroweak scale in neutrino oscillation phenomena. The main features which distinguish it from high scale unitarity violation are preservation of lepton flavor universality and absence of zero-distance neutrino flavor transition. For concreteness, we work in the framework of 3 active plus N sterile neut ... More
Presented by Dr. Fong CHEE SHENG on 9 May 2017 at 15:20
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The origin of astrophysical neutrinos remains a mystery. The isotropic spacial distribution of the observed events implies that to detect point sources, both order-of-magnitude more statistics and more advanced search tools are needed. Here we introduce a maximum-likelihood method for search of point-like sources using event pairs. We show that when a decent angular resolution is available, this ... More
Presented by Ke FANG on 9 May 2017 at 17:30
Session: Multi-messenger
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
The Astrophysical Multimessenger Observatory Network (AMON) will perform realtime coincidence searches for multimessenger astrophysical transients from multiple high-energy observatory subthreshold data streams. The resulting coincidences will be distributed in realtime to followup observatories and other interested parties in the form of AMON alerts. In addition to realtime analyses, AMON perform ... More
Presented by Azadeh KEIVANI on 9 May 2017 at 16:45
Session: Neutrino Astronomy
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
The Non-Poissonian Template Fitting (NPTF) technique has been used to show that the excess of gamma rays observed by Fermi is likely due to a population of unresolved point sources rather than dark matter emission. The IceCube experiment has positively identified neutrinos of astrophysical origin, but as yet, no point sources have been resolved. We present an analysis that applies NPTF to IceCube ... More
Presented by Gabriel COLLIN on 9 May 2017 at 17:15
Session: Multi-messenger
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
It has been a mystery that with ten orders of magnitude difference in energy, high-energy neutrinos, ultrahigh-energy cosmic rays, and sub-TeV gamma rays all present comparable energy injection rate, hinting an unknown common origin. Here we show that black hole jets embedded in clusters of galaxies may work as sources of all three messengers. By numerically simulating the propagation of cosmic ra ... More
Presented by Ke FANG on 9 May 2017 at 16:30
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
We study the implications of the premise that any new, relativistic, highly energetic neutral particle that interacts with quarks and gluons would create cascade-like events in the IceCube (IC) detector which would be observationally indistinguishable from neutral current deep-inelastic (DIS) scattering events due to neutrinos. Consequently, one reason for deviations, breaks or excesses in th ... More
Presented by Prof. Rajesh GANDHI on 8 May 2017 at 14:48
Session: Plenaries
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
We report on the detection of coherent transition radiation from the electron beam sudden appearance. The Telescope Array Linear Accelerator (TA-LINAC) is constructed to calibrate the TA fluorescence detectors by directing a high-energy electron beam in to the air. This makes the TA-LINAC the perfect device to test future detection techniques, such as the radio detection method, to probe high-ener ... More
Presented by Krijn DE VRIES on 9 May 2017 at 17:42
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
Imaging air Cherenkov telescopes (IACTs) are detecting the Cherenkov light of gamma-ray and cosmic-ray induced showers in the atmosphere. This light may add valuable information to large volume cosmic ray and gamma ray detectors like HAWC or IceCube-Gen2. For IceCube IACTs could work as an efficient veto for atmospheric neutrinos in the Southern Hemisphere and could also be used in combination wit ... More
Presented by Jan AUFFENBERG on 9 May 2017 at 16:48
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
The Pierre Auger Collaboration has reported an excess in the number of muons of a few tens of percent over expectations computed using extrapolation of hadronic interaction models tuned to accommodate LHC data, I'll present an explanation for the muon excess assuming the formation of a deconfined quark matter (fireball) state in central collisions of ultrarelativistic cosmic rays with air nuclei. ... More
Presented by Luis ANCHORDOQUI on 9 May 2017 at 14:48
Session: Gamma Rays
Track: Gamma Rays - Convenor: Reshmi Mukherjee, Columbia
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 100 GeV – 100 TeV gamma rays and cosmic rays. Located at an elevation of 4100 m on the Sierra Negra volcano in Mexico, HAWC observes extensive air showers from gamma rays via their production of Cherenkov light within an array of water tanks. Through its detection of high-energy gamma ... More
Presented by Dr. J. Patrick HARDING on 9 May 2017 at 14:30
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
The IceCube detection of High Energy Starting Events (HESE) and the upward muon track events (6 year data) are presently hard to explain with the single power-law astophysical flux for energies above 30TeV. We investigate the possibility that a significant component of the additional neutrino flux originates due to the decay of a very heavy dark matter particle via several possible channels ... More
Presented by Prof. INA SARCEVIC on 8 May 2017 at 14:30
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
The origin of diffuse radio emission in galaxy clusters remains an open question in astrophysics. This emission indicates the presence of cluster-wide magnetic fields and high energy cosmic ray (CR) electrons. I will discuss how the properties of the observed radio emission in clusters are shaped by different CR transport processes, namely CR streaming. I present simple numerical simulations of th ... More
Presented by Joshua WIENER on 9 May 2017 at 14:30
Session: Plenaries
Track: Non-Thermal Sources in the Universe- Kohta Murase, Penn State
Starburst galaxies and galaxy clusters/groups serve as the storage rooms of cosmic rays. It was theoretically predicted that such cosmic-ray reservoirs are promising sources of neutrinos and gamma rays. The models are indeed consistent with the high-energy neutrino data measured by IceCube, and that they could give a convergence picture of neutrinos, gamma rays and ultrahigh-energy cosmic rays. We ... More
Presented by Dr. Kohta MURASE on 10 May 2017 at 09:30
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
The Micro-X sounding rocket uses a Transition Edge Sensor (TES) array to make X-ray observations. The improved energy resolution of TESs compared to traditional space-based X-ray detectors brings new precision to both supernova observations and the X-ray search for sterile neutrino dark matter. Current X-ray observations disagree over the potential presence of a 3.5 keV X-ray line consistent with ... More
Presented by Antonia HUBBARD on 8 May 2017 at 15:42
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
The DarkSide program for the direct detection of WIMP dark matter is a phased program, set at Laboratori Nazionali del Gran Sasso in Italy. TheDarkSide-50 detector is a two-phase argon TPC installed at the center of two nested veto detectors, a 30-tonne liquid scintillator neutron veto and a 1,000-tonne water Cherenkov muon veto.  While operating in 2014 with a fill of argon extracted from the ... More
Presented by Prof. Andrew RENSHAW on 8 May 2017 at 17:24
Session: Neutrino Properties
Track: Non-Accelerator-Based Neutrino
The IceCube Neutrino Observary instruments about 1 km^3 of deep, glacial ice below the geographic South Pole with 5160 digital optical modules (DOMs) to register the Cherenkov light of passing charged particles. The DeepCore subdetector, a more densely instrumented region located in the clearest section of ice, provides sensitivity to neutrinos in the range of 5-100 GeV. Using the DeepCore detect ... More
Presented by Martin RONGEN on 8 May 2017 at 14:30
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The sources of IceCube detected high energy neutrinos are unknown. During the processes of high energy neutrino production, there should be accompanying gamma-ray emission from neutral pion decay or secondary charged particle emission. Even in the processes that gamma-ray emission is dominated by accelerated electrons, there could be a relation between gamma-ray and neutrino emission. Therefore, w ... More
Presented by Dr. Zhuo LI on 8 May 2017 at 15:45
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
Direct dark matter searches are promising techniques to identify the nature of dark matter particles. A variety of experiments have been developed over the past decades, aiming to detect Weakly Interactive Massive Particles (WIMPs) via their scattering in a detector medium. Exploiting directionality would also give a proof of the galactic origin of dark matter making it possible to have a clear an ... More
Presented by Prof. Ali Murat GULER on 8 May 2017 at 17:42
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
We are entering a new era of neutrino astronomy with the recent IceCube discovery of high-energy astrophysical neutrinos. Important questions, such as what their sources are, arise with these events. The flavor composition of these neutrinos has been identified as a rich observable, containing information about the production processes and neutrino properties. So far, only $\nu_\mu$ charged cur ... More
Presented by Shirley LI on 8 May 2017 at 15:00
Session: Neutrino Properties
Track: Non-Accelerator-Based Neutrino
IceCube, a neutrino detector located at the South Pole, is an ideal testing ground for the hypothetical 1 eV sterile neutrino, which is motivated by the short-baseline neutrino anomalies. In a normal ordering 3+1 sterile neutrino scheme, the decay of the heaviest neutrino mass eigenstate to lighter eigenstates is unconstrained. In this talk, we will show how such a decay could modify the results o ... More
Presented by Dr. Carlos ARGUELLES on 8 May 2017 at 15:15
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The IceCube analyses that identify the astrophysical neutrino flux from the southern hemisphere must reject muons and neutrinos from the atmosphere. To do this, the analyses use the outer regions of the detector to identify and reject penetrating muon tracks produced by cosmic ray interactions with the atmosphere. In doing so they can remove atmospheric neutrinos and muons. By using the outer regi ... More
Presented by Kyle JERO on 9 May 2017 at 16:45
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
The Daya Bay experiment has utilized eight functionally identical underground detectors to sample reactor antineutrino fluxes from three pairs of nuclear reactors in South China, accruing the largest reactor antineutrino sample to date. This talk will summarize Daya Bay’s most recent result, which presents observations of correlations between reactor core fuel evolution and changes in the detect ... More
Presented by Dr. Bryce LITTLEJOHN on 8 May 2017 at 16:30
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
A primary challenge in neutrino astronomy is to distinguish neutrinos produced by astrophysical sources from muons and neutrinos produced in our atmosphere. Atmospheric neutrinos can be rejected if traces of their parent air showers are detected, such as penetrating muons observed by the outermost sensors in a neutrino telescope. Alternatively, air showers could be detected at the surface, either ... More
Presented by Prof. Tyce DEYOUNG on 9 May 2017 at 15:42
Session: Plenaries
Track: Results from LIGO- Barry Barish, Caltech
The recent observation in LIGO of gravitational waves from Black Hole binary mergers represents the beginning of a new way to study the universe. Prospects for detecting other gravitational wave sources and prospects for multi-messenger astronomy will be discussed.
Presented by Prof. Barry BARISH on 8 May 2017 at 09:00
Session: Plenaries
The High Altitude Water Cherenkov (HAWC) Observatory is an all-sky surveying instrument that covers 2/3 of the sky in 24 hours. It is located in Sierra Negra, Mexico at an elevation of 4,100 m, and was inaugurated in March 2015. In addition to providing continuous sky coverage for transient events with a >95% duty cycle, HAWC is also well suited to measure extended and large-scale structures ... More
Presented by Michelle HUI on 10 May 2017 at 11:00
Session: Gamma Rays
Track: Gamma Rays - Convenor: Reshmi Mukherjee, Columbia
Ultra-high-energy cosmic rays and high-energy astrophysical neutrinos are routinely detected, but their sources remain unknown. Gamma-ray bursts (GRBs) have long been considered attractive candidate sources. Recently, the lack of neutrinos detected in coincidence with known GRBs has motivated revisions of the multi-messenger emission mechanism --- gamma rays, cosmic rays, neutrinos --- from with ... More
Presented by Dr. Mauricio BUSTAMANTE on 9 May 2017 at 14:48
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
IceCube has observed a diffuse flux, for which we now need to determine the origin - which could possibly be a combination of galactic and extra-galactic sources. A number of authors have suggested that our galaxy can account for the whole IceCube flux. However, we know that our galaxy is not unique and that there must be other similar galaxies in the rest of the Universe producing neutrinos at a ... More
Presented by Ms. Natasha ATKINS on 8 May 2017 at 15:30
Session: Plenaries
Track: IACT: present & future- Jamie Holder, Delaware
The current generation of imaging atmospheric Cherenkov telescope arrays have been operating for over a decade, and have succeeded in measuring the high energy emission from almost 200 sources. These observations probe the mechanisms of particle acceleration in a wide variety of extreme environments, and over a huge range of spatial scales - from pulsar magnetospheres to the jets of active ga ... More
Presented by Dr. Jamie HOLDER on 8 May 2017 at 11:30
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
The origin of the observed extraterrestrial neutrinos is still unknown, and their arrival directions are compatible with an isotropic distribution. This observation, together with dedicated studies of Galactic plane correlations, suggest a predominantly extragalactic origin. Dark matter-neutrino interactions, which have been extensively studied in cosmology, would thus lead to a slight suppression ... More
Presented by Dr. Aaron VINCENT on 8 May 2017 at 15:06
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
The KASCADE-Grande experiment has significantly contributed to the current knowledge about the energy spectrum and composition of cosmic rays for energies between the knee and the ankle. Meanwhile, post-LHC versions of the hadronic interaction models are available and used to interpret the entire data set of KASCADE-Grande. In addition, a new, combined analysis of both arrays, KASCADE and Grande, ... More
Presented by Dr. Andreas HAUNGS on 9 May 2017 at 17:06
Session: Plenaries
on 9 May 2017 at 09:00
Session: Plenaries
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
Data taken in the MINOS+ configuration have been combined with the already-significant MINOS data set to provide a fertile ground to look for sterile neutrinos in the Fermilab NuMI beam using two detectors separated by a baseline of 734km. The new results, which include half the total MINOS+ exposure and cover a very large range of parameter space, will be presented.
Presented by Adam SCHRECKENBERGER on 8 May 2017 at 16:45
Session: Plenaries
Session: Plenaries
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
Diffusive shock acceleration (DSA) at supernova remnant (SNR) shock fronts is thought to accelerate galactic cosmic rays (CRs) to energies below the knee, while an extragalactic origin is presumed for CRs with energies beyond the ankle. CRs with energies between 3 × 1015 and 1018 eV, which we dub the "shin," have an unknown origin. It has been proposed that DSA at galactic wind termination shocks ... More
Presented by Mr. Chad BUSTARD on 9 May 2017 at 15:06
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The IceCube neutrino discovery was punctuated by three showers with $E_\nu$ ~ 1-2 PeV. Interest is intense in possible fluxes at higher energies, though a marked lack of $E_\nu$ ~ 6 PeV Glashow resonance events implies a spectrum that is soft and/or cutoff below ~few PeV. However, IceCube recently reported a through-going track event depositing 2.6 $\pm$ 0.3 PeV. A muon depositing so much energy c ... More
Presented by Dr. Ranjan LAHA on 8 May 2017 at 16:30
Session: Plenaries
Track: Multi-Messenger Particle Astrophysics- Walter Winter, Zeuthen
I illustrate different techniques used in multi-messenger particle astrophysics relevant for the identification of the origin of the observed high-energy neutrinos, and their major challenges. These techniques range from generic approaches (such as the relationship between the diffuse gamma-ray and neutrino backgrounds if produced in the same interaction chain), over the secondary production in ... More
Presented by Dr. Walter WINTER on 10 May 2017 at 10:00
Session: Gamma Rays
Track: Gamma Rays - Convenor: Reshmi Mukherjee, Columbia
We show that the quasar outflows can naturally account for the missing component of the extragalactic gamma-ray background (EGB) below ~ 1 GeV through neutral pion production in interactions between protons accelerated by the forward outflow shock and interstellar protons. We adopt outflow parameters that best fit the most recent Fermi-LAT data on the EGB and derive a cumulative neutrino backgroun ... More
Presented by Xiawei WANG on 9 May 2017 at 15:24
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The IceCube neutrino observatory relies on the ability to reconstruct the energies of muon events for a wide range of analyses, including all astrophysical diffuse analyses. Current methods use the mean energy loss rate of the events with good results found after effectively truncating the largest losses. Here we discuss a new energy reconstruction method which uses topological information of the ... More
Presented by Sally ROBERTSON on 9 May 2017 at 17:00
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
Located at the South Pole Station in Antarctica, the IceCube Neutrino Observatory is the world's largest neutrino telescope. In the clearest part of the ice sits a more densely instrumented section, DeepCore, that is able to measure neutrinos from 5-80 GeV. Using DeepCore, neutrino oscillations can be observed via $\nu_{\mu}$ disappearance. This talk will highlight the new and greatly improved atm ... More
Presented by Joao Pedro A M DE ANDRE on 8 May 2017 at 15:00
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
Recent measurements of the Geminga and B0656+14 pulsars by the gamma-ray telescope HAWC (along with earlier measurements by Milagro) indicate that these objects generate significant fluxes of very high-energy electrons. From the measured gamma-ray intensity and spectrum of these pulsars, one can calculate and constrain their expected contributions to the local cosmic-ray positron spectrum. Among m ... More
Presented by Prof. Dan HOOPER on 9 May 2017 at 15:24
Session: Plenaries
Track: Neutrino Astronomy of Transient Signals- Anna Franckowiak, DESY
The recent discovery of high-energy astrophysical neutrinos has opened a new window to the Universe. However, the sources of those neutrinos are still unknown. Many of the plausible candidates are of transient nature, such as gamma-ray bursts, supernovae, tidal disruption events and flares of active galactic nuclei. Combining neutrino data with electromagnetic (EM) measurements in a multimessenger ... More
Presented by Anna FRANCKOWIAK on 10 May 2017 at 12:00
Session: Plenaries
Track: Science potential of IceCube-Gen2- Marek Kowalski, Zeuthen
I will discuss science and status of the IceCube-Gen2 project.
Presented by Mr. Marek KOWALSKI on 9 May 2017 at 10:00
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
A comparison of neutrino oscillation measurements with those of anti-neutrino oscillation measurements may give information on CP violation in the lepton sector. In this talk, we present the latest results from T2K obtained using both neutrino and anti-neutrino data, which exclude CP conservation at the 90% CL.
Presented by Thomas KUTTER on 8 May 2017 at 17:15
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
A proper understanding of neutrino cross sections is crucial for the precise determination of the neutrino oscillation parameters. The T2K near detectors allow for a range of cross-section measurements on various target materials, often in an energy regime with few previous measurements. This talk will detail some of the recent cross-section results from T2K.
Presented by Tianlu YUAN on 8 May 2017 at 17:30
Session: Plenaries
Track: Neutrinos from Supernovae- John Beacom, Ohio State
What is required to develop the full potential of neutrino astronomy? Robust detections, spanning a variety of energies and sources. Interdisciplinary work to define theoretical predictions. And careful comparisons of experiment and theory to develop new conclusions about astrophysical sources and neutrinos themselves. Supernova neutrinos must be part of this program. I will describe the expe ... More
Presented by Prof. John BEACOM on 9 May 2017 at 11:00
Session: Neutrino Properties
Track: Non-Accelerator-Based Neutrino
We revisit the atmospheric neutrino flux at high energies where the decay of charmed hadrons produced in cosmic ray airshowers is expected to dominate the flux. The forward production of charmed hadrons can potentially increase the predicted flux but it is relatively uncertain due to lack of forward coverage from modern colliders. Using archival data, IceCube atmospheric neutrino flux measurements ... More
Presented by Logan WILLE on 8 May 2017 at 15:30
Session: Plenaries
Track: Optical surveys and particle astrophysics: prospects in the LSST era- Keith Bechtol, LSST
Steady advances in telescope and camera technology have allowed us to explore the night sky deeper, wider, and faster with each new generation of instruments. The next major experiment in this endeavor is the Large Synoptic Survey Telescope (LSST), now under construction in Chile, with first light scheduled in 2020. LSST will catalog more stars and galaxies than all previous astronomical surveys c ... More
Presented by Keith BECHTOL on 10 May 2017 at 11:30
Session: Multi-messenger
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
The Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) has been recently selected by NASA for an in-depth probe mission concept study in preparation for the next decadal survey. POEMMA will combine the well-developed Orbiting Wide-field Light collectors (OWL) concept with the recently proposed CHerenkov from Astrophysical Neutrino Telescope (CHANT) concept to form a multi-messenger pro ... More
Presented by John KRIZMANIC on 9 May 2017 at 17:15
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
PROSPECT is a reactor antineutrino experiment consisting of a segmented 6Li-loaded liquid scintillator antineutrino detector designed to probe short-baseline neutrino oscillations and precisely measure the reactor antineutrino spectrum. The experiment will be located at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Lab. The three ton detector will be located 7-12 m from the compact, h ... More
Presented by Dr. Pranava SURUKUCHI on 9 May 2017 at 14:35
Session: Plenaries
Track: The Fermilab Neutrino Program- Nigel Lockyer, Fermilab
Particle Physics is one of the most basic of curiosity driven sciences. Collecting the global community together worldwide to begin the process of having a truly worldwide plan for large particle physics facilities is underway. The field of Particle Physics has always been international as evidenced by Tevatron collider at Fermilab, the Large Hadron Collider at CERN and the bottom quark “factory ... More
Presented by Dr. Nigel LOCKYER on 8 May 2017 at 10:00
Session: Plenaries
on 9 May 2017 at 09:30
Session: Plenaries
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
As the leading high energy neutrino background to the diffuse astrophysical neutrino flux, the flux of neutrinos produced in the PeV energy range by cosmic ray interactions in the atmosphere is of particular interest. The prompt atmospheric neutrino flux is evaluated in three frameworks: next to leading order QCD, kT factorization including low-x resummation, and in the dipole model. A comparison ... More
Presented by Prof. Mary Hall RENO on 8 May 2017 at 14:30
Session: Neutrino Astronomy
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
We evaluate the prospects for detecting the neutrino emission from sources in the Galactic plane assuming that the highest energy photons originate from the decay of pions, which yields a straightforward prediction for the neutrino flux from the decay of the associated production of charged pions. Four promising sources are identified based on having a large flux and a flat spectrum. We subsequent ... More
Presented by Ali KHEIRANDISH on 8 May 2017 at 14:45
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
Ground-based radio arrays offer a promising future for the detection of high energy neutrinos, including the prospect of reducing the energy threshold of the radio detection technique to a level necessary to overlap with the high-energy range probed by IceCube ($\sim$10-100~PeV). Contemporary ground-based radio arrays, such as ARIANNA and ARA, are designed primarily to detect coherent radio Cheren ... More
Presented by Eric OBERLA on 9 May 2017 at 17:45
Session: Multi-messenger
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
The existence of a high-energy diffuse astrophysical neutrino flux has recently been confirmed by the IceCube Neutrino Observatory, but in the absence of any high-confidence counterparts the nature of the sources of these high-energy neutrinos is still unknown. Several candidate neutrino source populations, such as Gamma-ray Bursts and Blazar Flares predict a prompt gamma-ray emission along with t ... More
Presented by Mr. James DELAUNAY on 9 May 2017 at 17:00
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
Recent results from the NOvA long-baseline neutrino oscillation experiment are beginning to constrain the parameters of the standard model neutrino properties. Intriguing results using the full data set combining measurements have provided some intriguing results that will be closely watched as data taking continues.
Presented by Leon MUALEM on 8 May 2017 at 17:00
Session: Plenaries
Track: High-Energy Cosmic Rays - Valerio Verzi, INFN Roma
Ultra-High Energy Cosmic Rays are charged particles of energies above 10^18 eV that originate outside of the Galaxy. Their very small flux is detected by the two giant experiments, the Pierre Auger Observatory and Telescope Array, which extend over areas of 3000 km^2 in the southern hemisphere and 700 km^2 in northern one, respectively. I will review the observational results reported by thes ... More
Presented by Dr. Valerio VERZI on 10 May 2017 at 09:00
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
ANTARES, the largest underwater neutrino telescope, has been continuously operating since 2007 in the Mediterranean Sea. The transparency of the water allows for a very good angular resolution in the reconstruction of neutrino events of all flavors. This results in unprecedented sensitivity for neutrino source searches in the Southern Sky at TeV energies, so that already valuable constraints can b ... More
Presented by Dr. Antoine KOUCHNER on 8 May 2017 at 16:45
Session: Plenaries
Track: Results from Fermi - Marco Ajello, Clemson
a
Presented by Dr. Marco AJELLO on 8 May 2017 at 09:30
Session: Plenaries
Track: IceCube results- Chad Finley, Stockholm
With one cubic kilometer of instrumented ice beneath the South Pole, IceCube enables the study of a wide range of phenomena including neutrino astronomy, dark matter searches, neutrino oscillations, and cosmic ray physics. Four years ago IceCube announced the first observations of the long-anticipated flux of high energy neutrinos from deep space. The neutrino energies are up to 100 million time ... More
Presented by Chad FINLEY on 8 May 2017 at 11:00
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
DM-Ice is a phased experimental program using low-background NaI(Tl) crystals with the aim to unambiguously test the claim of dark matter detection by the DAMA experiment. DM-Ice17, consisting of 17 kg of NaI(Tl), has been continuously operating at a depth of 2457 m in the South Pole ice since December 2010. COSINE-100 is a joint collaboration between the DM-Ice and KIMS groups to search for dark ... More
Presented by Jay Hyun JO on 8 May 2017 at 17:06
Session: Plenaries
on 9 May 2017 at 11:30
Session: Neutrino Astronomy
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
The IceCube Neutrino Observatory has observed a diffuse astrophysical neutrino flux, consistent with equal mixture of neutrino flavors. Regardless of the production mechanism at the source, an appreciable amount of tau neutrinos is expected via mixing over astronomical distances. Identification of tau neutrinos is essential for the precise measurement of the astrophysical neutrino flavor content, ... More
Presented by Dr. Donglian XU on 9 May 2017 at 16:30
Session: Neutrino Astronomy
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
Fast radio bursts (FRBs) are bright millisecond-duration radio transients with high dispersion measures, suggesting extragalactic origin. Since their first discovery in 2007, FRBs have been observed at more than a dozen unique locations, with one source producing many repeated bursts. This repeating burst is the only FRB to which the distance has been measured. Many emission models have been propo ... More
Presented by Sam FAHEY on 8 May 2017 at 17:45
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The origin of high-energy astrophysical neutrinos measured by the IceCube Neutrino Observatory remains a mystery despite extensive searches for multimessenger correlations. In particular, no point sources have been identified so far. However a likely source for diffuse neutrino emission are cosmic-ray interactions in the galactic plane. Due to the excellent pointing of their track-like signature, ... More
Presented by Christian HAACK on 8 May 2017 at 17:15
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
Search for heavy dark matter decay with IceCube Many heavy (m>100TeV) dark matter models predict the dark matter particle to decay into standard model particles, including neutrinos. These neutrinos would produce a unique signal, both in terms of their energy and angular distributions, in the IceCube detector. This talk describes the search for such a signal using two years of high energy cascad ... More
Presented by Hrvoje DUJMOVIC on 8 May 2017 at 15:24
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
Using a sample of neutrino-induced muon track events, IceCube has confirmed the high-energy diffuse astrophysical neutrinos flux, first found in a sample of high energy starting events. In order to identify the sources of this diffuse flux, these muon-neutrino events are ideal because of their excellent angular resolution. Here we present a search for point-like neutrino sources based on the same ... More
Presented by Mr. René REIMANN on 8 May 2017 at 17:30
Session: Gamma Rays
Track: Gamma Rays - Convenor: Reshmi Mukherjee, Columbia
The era of precision cosmology has revealed that ~80% of the total amount of matter in the universe is dark matter. One promising candidate, motivated by both particle physics and astrophysics, is the Weakly Interacting Massive Particle (WIMP). WIMPs are predicted to couple to the Standard Model via annihilation or decay. The annihilation or decay products of particular interest are neutrinos and ... More
Presented by Dr. Regina CAPUTO on 9 May 2017 at 15:06
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP
The IceCube neutrino observatory has observed a flux of high-energy astrophysical neutrinos using both track events from muon neutrino interactions and cascade events from interactions of all neutrino flavors. Searches for astrophysical neutrino sources have focused on track events due to the significantly better angular resolution of track reconstructions. To date, no such sources have been con ... More
Presented by Mike RICHMAN on 8 May 2017 at 17:00
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
In this talk I will discuss the production of high-energy neutrinos from interactions of cosmic rays with the solar atmosphere. Production of solar atmospheric neutrinos has been previously considered in the literature both as a potential source of high-energy neutrinos and as an irreducible background for dark matter searches. In our new calculation we estimate the uncertainties that arise from t ... More
Presented by Dr. Carlos ARGUELLES on 8 May 2017 at 16:48
Session: Dark Matter
Track: Dark Matter - Convenor: Carsten Rott, SKKU
Sterile neutrinos at the eV scale have long been studied in the context of anomalies in short baseline neutrino experiments. Their cosmology can be made compatible with our understanding of the early Universe provided the sterile neutrino sector enjoys a nontrivial dynamics with exotic interactions, possibly providing a link to the Dark Matter (DM) puzzle. Interactions between DM and neutrinos hav ... More
Presented by Dr. Francesco CAPOZZI on 8 May 2017 at 16:30
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
Recent short baseline results have indicated anomalies consistent with ~1 eV2 sterile neutrinos. However, these results are in tension with other null searches, including that of IceCube. This talk will present the most recent global fit results, including IceCube, discuss the source of the tension, in particular the MiniBooNE neutrino result, and present directions of future attack on the probl ... More
Presented by Janet CONRAD on 8 May 2017 at 15:45
Session: Neutrino Properties
Track: Non-Accelerator-Based Neutrino
CUORE (Cryogenic Underground Observatory for Rare Events) is an array of 988 TeO2 bolometers arranged in 19 towers with a total active mass of 742 kg located at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The primary purpose of CUORE is to search for the neutrinoless double beta decay of 130Te, which if observed, would establish the Majorana nature of neutrinos as well as providing in ... More
Presented by Laura GLADSTONE on 9 May 2017 at 15:35
Session: Plenaries
Track: Status of Sterile Neutrinos- Patrick Huber, Virginia Tech
N/A
Presented by Prof. Patrick HUBER on 9 May 2017 at 12:00
Session: Plenaries
Track: Invited plenary
The current status of supersymmetric models of dark matter is reviewed. Prior to Run I at the LHC, there were great expectations for the discovery of supersymmetry at the LHC and dark matter in direct detection experiments. Unfortunately, there was no sign of supersymmetry in Run I (or Run II so far), nor any direct detection signal. I concentrate on models of supersymmetry inspired by Grand ... More
Presented by Prof. Keith OLIVE on 8 May 2017 at 12:00
Session: Cosmic Rays
Track: Cosmic Rays - Convenor: Andreas Haungs, KIT
Telescope Array (TA) is the largest cosmic ray detector in the Norther hemisphere, which measures primary particles in 4 PeV to 100 EeV range. TA is a hybrid detector. The main TA detector consists of 507 plastic scintillation counters on a 1.2km square grid, overlooked by 3 fluorescence detector stations. By May 2017, TA will have collected 9 years of data above 1 EeV. Results of this contrib ... More
Presented by Dr. Dmitri IVANOV on 9 May 2017 at 17:24
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
The measurement of the Neutrino Mass Ordering (NMO), i.e. the ordering of the neutrino mass eigenstates, is one of the major goals of many future neutrino experiments. One strategy is to measure matter effects in the oscillation pattern of atmospheric neutrinos as proposed for the PINGU extension of the IceCube Neutrino Observatory. Already, the currently running IceCube/DeepCore detector can expl ... More
Presented by Martin LEUERMANN on 8 May 2017 at 14:45
Session: Neutrino Properties
Track: Non-Accelerator-Based Neutrino
The determination of the Majorana nature of the neutrino is the chief goal of the proposed next generation of neutrinoless double-beta decay (0νββ) experiments. By achieving a sensitivity on the rate of 0νββ in 136Xe of 1.9 × 1025 years, the predecessor to nEXO, EXO-200, has demonstrated the feasibility of using 136Xe for potentially observing neutrinoless double-beta decay. Building on the ... More
Presented by Dr. Jacob DAUGHHETEE on 9 May 2017 at 14:50
Session: Multi-messenger
Track: Multi-Messenger - Convenor: Elisa Resconi, TUM
The Sun must shine brightly in GeV—TeV gamma rays and neutrinos.  These particles are produced by the interactions of cosmic rays with solar matter and radiation.  Additional fluxes may be caused by the annihilation of dark matter in the solar core, perhaps with the eventual particles produced outside of the Sun through the decay of metastable mediators.  Importantly, a new generation of expe ... More
Presented by Mr. Bei ZHOU on 9 May 2017 at 17:30
Session: Neutrino Properties
Track: Accelerator-Based Neutrinos - Convenor: Jennifer Thomas, University College London
The CHIPS detector (10 kt ) will be deployed in a flooded mine pit in the path of the NuMI beam in 2018. The detector design has been informed from two years of prototype work where a small detector was deployed in the Wentworth 2E pit, N. Minnesota. Detector plane and readout design has largely been fixed. The goal of the experiment is to demonstrate a low cost solution for very large water C ... More
Presented by Prof. Jennifer THOMAS on 9 May 2017 at 14:30
Session: Gamma Rays
Track: Gamma Rays - Convenor: Reshmi Mukherjee, Columbia
Neutrino astronomy is an emerging area of study in high-energy astrophysics, and astrophysical neutrinos are natural cousins of very high energy (VHE; E > 100 GeV) gamma rays. The VERITAS gamma-ray observatory has an active program of follow-up observations in the directions of high-energy neutrinos detected by IceCube which are potentially astrophysical, including prompt alerts, and the planned C ... More
Presented by Brian HUMENSKY on 9 May 2017 at 15:42
Session: Neutrino Astronomy
Track: Neutrino Astronomy - Convenor: Gisela Anton, FAU / ECAP