First Evidence For Atmospheric Neutrino Induced Cascades With The Icecube Detector

Author : Michelangelo Vincent D'Agostino
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.60/5 ( download)

DOWNLOAD NOW!

Download or read book First Evidence for Atmospheric Neutrino-induced Cascades with the IceCube Detector written by Michelangelo Vincent D'Agostino and published by . This book was released on 2009 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Chang Hyon Ha
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.02/5 ( download)

DOWNLOAD NOW!

Download or read book Observation of Atmospheric Neutrino-induced Cascades in Icecube with Deepcore written by Chang Hyon Ha and published by . This book was released on 2011 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.66/5 ( download)

DOWNLOAD NOW!

Download or read book First Search for Extraterrestrial Neutrino-induced Cascades with IceCube written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the first search for extraterrestrial neutrino-induced cascades in IceCube. The analyzed data were collected in the year 2007 when 22 detector strings were installed and operated. We will discuss the analysis methods used to reconstruct cascades and to suppress backgrounds. Simulated neutrino signal events with a E-2 energy spectrum, which pass the background rejection criteria, are reconstructed with a resolution Delta(log E) ~;; 0.27 in the energy range from ~;; 20 TeV to a few PeV. We present the range of the diffuse flux of extra-terrestrial neutrinos in the cascade channel in IceCube within which we expect to be able to put a limit.

Author : Sebastian Panknin
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.24/5 ( download)

DOWNLOAD NOW!

Download or read book Search for Neutrino-induced Cascade Events in the IceCube Detector written by Sebastian Panknin and published by . This book was released on 2011 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.12/5 ( download)

DOWNLOAD NOW!

Download or read book Search for Correlations Between the Arrival Directions of IceCube Neutrino Events and Ultrahigh-energy Cosmic Rays Detected by the Pierre Auger Observatory and the Telescope Array written by and published by . This book was released on 2016 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured by the Pierre Auger Observatory and the Telescope Array. We first consider samples of cascade neutrino events and of high-energy neutrino-induced muon tracks, which provided evidence for a neutrino flux of astrophysical origin, and study their cross-correlation with the ultrahigh-energy cosmic ray (UHECR) samples as a function of angular separation. We also study their possible directional correlations using a likelihood method stacking the neutrino arrival directions and adopting different assumptions on the size of the UHECR magnetic deflections. Finally, we perform another likelihood analysis stacking the UHECR directions and using a sample of through-going muon tracks optimized for neutrino point-source searches with sub-degree angular resolution. No indications of correlations at discovery level are obtained for any of the searches performed. The smallest of the p-values comes from the search for correlation between UHECRs with IceCube high-energy cascades, a result that should continue to be monitored.

Author : Christian W. Fabjan
Publisher : Springer Nature
ISBN 13 : 3030353184
Total Pages : 1083 pages
Book Rating : 4.86/5 ( download)

DOWNLOAD NOW!

Download or read book Particle Physics Reference Library written by Christian W. Fabjan and published by Springer Nature. This book was released on 2020 with total page 1083 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.12/5 ( download)

DOWNLOAD NOW!

Download or read book First Neutrino Point-Source Results from the 22-STRING Icecube Detector written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present new results of searches for neutrino point sources in the northern sky, using data recorded in 2007-08 with 22 strings of the IceCube detector (approximately one-fourth of the planned total) and 275.7 days of livetime. The final sample of 5114 neutrino candidate events agrees well with the expected background of atmospheric muon neutrinos and a small component of atmospheric muons. No evidence of a point source is found, with the most significant excess of events in the sky at 2.2 [sigma] after accounting for all trials. The average upper limit over the northern sky for point sources of muon-neutrinos with E−2 spectrum is E2 [Phi]{sub {nu}{sub {mu}}}

Author : Claus Grupen
Publisher : Springer Science & Business Media
ISBN 13 : 3642132715
Total Pages : 1251 pages
Book Rating : 4.11/5 ( download)

DOWNLOAD NOW!

Download or read book Handbook of Particle Detection and Imaging written by Claus Grupen and published by Springer Science & Business Media. This book was released on 2012-01-08 with total page 1251 pages. Available in PDF, EPUB and Kindle. Book excerpt: The handbook centers on detection techniques in the field of particle physics, medical imaging and related subjects. It is structured into three parts. The first one is dealing with basic ideas of particle detectors, followed by applications of these devices in high energy physics and other fields. In the last part the large field of medical imaging using similar detection techniques is described. The different chapters of the book are written by world experts in their field. Clear instructions on the detection techniques and principles in terms of relevant operation parameters for scientists and graduate students are given.Detailed tables and diagrams will make this a very useful handbook for the application of these techniques in many different fields like physics, medicine, biology and other areas of natural science.

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.52/5 ( download)

DOWNLOAD NOW!

Download or read book A Study of Atmospheric Neutrino Oscillation Using the IceCube DeepCore Detector written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IceCube detector at the South Pole is a cubic-kilometer-scale neutrino detector designed to observe TeV-range charged particle secondaries from neutrino interactions, and thus do neutrino astronomy. As a main background to the search for astrophysical point sources of neutrinos, IceCube also observes muons and neutrinos from the atmospheric interactions of cosmic rays. By observing a spectrum of atmospheric neutrinos and comparing it to independent predictions of atmospheric fluxes with and without oscillations, IceCube can test various values of oscillation parameters. Neutrino oscillations have been observed experimentally for several decades; IceCube is the first experiment to extend this measurement to the 10-20 GeV energy range. An initial analysis has established that IceCube can see oscillations using the 79-string detector configuration ("IC79"), which was the first year of data that included the DeepCore detector. As a follow-up, this analysis uses a less restrictive event selection and thus a higher total event count, around 3,000 for one year of data. The fit is a Poisson likelihood fit of a two-dimensional rate histogram, using both oscillated length and observed energy. The arrival zenith angle of the muon is used as a proxy for oscillation length. The error contours are dominated by systematic effects more than by statistical limitations of the data. Major systematics include uncertainties in the atmospheric neutrino flux at high energies and uncertainties in the distribution of the cosmic ray muon background. This analysis was designed to produce limits on the mixing angle &theta23 that are competitive with other current experiments, although this is still uncertain as error analysis work is ongoing. Future work will further refine the event selection and systematic error analysis; the statistical methods and software used here are expected to become the IceCube oscillations standard. This thesis also includes background information about the history of neutrino physics, basics of oscillation formalism, and the IceCube DeepCore detector. A brief chapter is included on the search for a deficit in cosmic ray muons from the direction of the Moon, and the implications of that deficit for the pointing resolution of IceCube.

Author : Michael Vito Prikockis
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.95/5 ( download)

DOWNLOAD NOW!

Download or read book Analysis of Cascade Reconstruction in IceCube and DeepCore written by Michael Vito Prikockis and published by . This book was released on 2010 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IceCube collaboration utilizes a particle detector in Antarctica to en- hance understanding of the universe via neutrinos. These low mass particles interact with particles in ice to form leptons that exceed the speed of light in ice. This causes the radiation of a blue light cone, called Cherenkov radi- ation, often likened to the mach cone of a sonic boom. One event type, elec- tron neutrino-induced cascades, holds particular importance in IceCube's scientic goals as it represents 1=3 of the signal. By reconstructing simu- lated cascades via maximum likelihood methods, we explore the performance of a new implementation (Photorec) that uses tabulated detailed simulation of ice properties. Compared with the old implementation, we see compa- rable resolutions with great improvement to directionality. However, event reconstructions seem to be highly dependent on seed quality. An idea for better seeds is explored, and leads to an investigation of the likelihood space with 1,000,000 link Markov Chains. A three-fold conclusion is drawn from the analysis. First, the nite length of a cascade (in reality and simulation) should be taken into account in reconstruction. Second, our model of ice properties should be investigated for DeepCore regions of the detector. Fi- nally, spline ts (currently being worked on) should be introduced to the Photorec tables to limit interpolation errors and enable further study.