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ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.:/5 (186 download)
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations at Delta M Squared > 0.1 Electon Volt Squared written by and published by . This book was released on 2007 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 251 pages
Book Rating : 4.:/5 (873 download)
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations at Delta(m^2)]0.1 EV^2 written by and published by . This book was released on 2007 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evidence is compelling that neutrinos undergo flavor change as they propagate. In recent years, experiments have observed this phenomenon of neutrino oscillations using disparate neutrino sources: the sun, fission reactors, accelerators, and secondary cosmic rays. The standard model of particle physics needs only simple extensions - neutrino masses and mixing - to accommodate all neutrino oscillation results to date, save one. The 3.8[sigma]-significant {bar {nu}}{sub e} excess reported by the LSND collaboration is consistent with {bar {nu}}{sub {mu}} →{bar {nu}}{sub e} oscillations with a mass-squared splitting of [Delta]m2 ≈ 1 eV2. This signal, which has not been independently verified, is inconsistent with other oscillation evidence unless more daring standard model extensions (e.g. sterile neutrinos) are considered.
Author : Juan Pedro Ochoa-Ricoux
Publisher : Springer Science & Business Media
ISBN 13 : 1441979492
Total Pages : 300 pages
Book Rating : 4.4/5 (419 download)
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations in the MINOS Experiment written by Juan Pedro Ochoa-Ricoux and published by Springer Science & Business Media. This book was released on 2011-04-11 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The centerpiece of the thesis is the search for muon neutrino to electron neutrino oscillations which would indicate a non-zero mixing angle between the first and third neutrino generations (θ13), currently the “holy grail” of neutrino physics. The optimal extraction of the electron neutrino oscillation signal is based on the novel “library event matching” (LEM) method which Ochoa developed and implemented together with colleagues at Caltech and at Cambridge, which improves MINOS’ (Main Injector Neutrino Oscillator Search) reach for establishing an oscillation signal over any other method. LEM will now be the basis for MINOS’ final results, and will likely keep MINOS at the forefront of this field until it completes its data taking in 2011. Ochoa and his colleagues also developed the successful plan to run MINOS with a beam tuned for antineutrinos, to make a sensitive test of CPT symmetry by comparing the inter-generational mass splitting for neutrinos and antineutrinos. Ochoa’s in-depth, creative approach to the solution of a variety of complex experimental problems is an outstanding example for graduate students and longtime practitioners of experimental physics alike. Some of the most exciting results in this field to emerge in the near future may find their foundations in this thesis.
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ISBN 13 :
Total Pages : 269 pages
Book Rating : 4.:/5 (16 download)
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations at ?m2 > 0.1 EV2 written by and published by . This book was released on 2007 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evidence is compelling that neutrinos undergo flavor change as they propagate. In recent years, experiments have observed this phenomenon of neutrino oscillations using disparate neutrino sources: the sun, fission reactors, accelerators, and secondary cosmic rays. The standard model of particle physics needs only simple extensions - neutrino masses and mixing - to accommodate all neutrino oscillation results to date, save one. The 3.8?-significant $ar{v}$e excess reported by the LSND collaboration is consistent with $ar{v}$? →$ar{v}$e oscillations with a mass-squared splitting of ?m2 ̃1 eV2. This signal, which has not been independently verified, is inconsistent with other oscillation evidence unless more daring standard model extensions (e.g. sterile neutrinos) are considered.
Author :
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ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (873 download)
Download or read book A Search for Electron Neutrino Appearance at the Delta M**2 ~ 1- EV**2 Scale written by and published by . This book was released on 2007 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MiniBooNE Collaboration reports first results of a search for [upsilon]{sub e} appearance in a [upsilon]{sub {mu}} beam. With two largely independent analyses, we observe no significant excess of events above background for reconstructed neutrino energies above 475 MeV. The data are consistent with no oscillations within a two neutrino appearance-only oscillation model.
Author : Gregory William Sullivan
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (774 download)
Download or read book A Search for Muon-associated Neutrino Going to Electron-associated Neutrino Oscillations in a Wide-band Neutrino Beam written by Gregory William Sullivan and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a report on a search for $\nu\sb\mu \to \nu\sb{e}$ oscilliations using the E776 detector at Brookhaven National Laboratory. The detector consisted of a 226 metric ton electromagnetic calorimeter followed by a toroidal muon spectrometer and was located 1 km from the target at the AGS. 1.43 $\times$ 10$\sp{19}$ protons on target were collected in the wide band beam with a peak neutrino energy of 1.1 GeV. No evidence for neutrino oscillations was observed. The 90% confidence limits obtained are $\Delta{m}\sp2 \leq$ 0.13 $eV\sp2$ for large mixing angle, and sin$\sp2$ 2$\theta \leq$ 7.7 $\times$ 10$\sp{-3}$ in the limit of large $\Delta{m}\sp2$.
Author : Michael Procario
Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.:/5 (89 download)
Download or read book A Search for Oscillations of Muon Neutrinos to Electron Neutrinos written by Michael Procario and published by . This book was released on 1986 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (319 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Works
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (343 download)
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations in the Appearance Mode written by David Works and published by . This book was released on 1995 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael F. Gray
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (349 download)
Download or read book A Search for Neutrino Oscillations in the Muon Neutrino to Electron Neutrino Appearance Channel at LSND written by Michael F. Gray and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (16 download)
Download or read book Improved Search for Muon-neutrino to Electron-neutrino Oscillations in MINOS written by and published by . This book was released on 2011 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report the results of a search for?{sub e} appearance in?{sub {mu}} beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 x 102° protons on the NuMI target at Fermilab, they find that 2 sin2 (?23) sin2 (?13)
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ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (958 download)
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations in the MINOS Experiment written by and published by . This book was released on 2009 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: We perform a search for v[mu] → ve oscillations, a process which would manifest a nonzero value of the [theta]13 mixing angle, in the MINOS long-baseline neutrino oscillation experiment. The analysis consists of searching for an excess of ve charged-current candidate events over the predicted backgrounds, made mostly of neutral-current events with high electromagnetic content. A novel technique to select electron neutrino events is developed, which achieves an improved separation between the signal and the backgrounds, and which consequently yields a better reach in [theta]13. The backgrounds are predicted in the Far Detector from Near Detector measurements. An excess is observed in the Far Detector data over the predicted backgrounds, which is consistent with the background-only hypothesis at 1.2 standard deviations.
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ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (951 download)
Download or read book Measuring $\theta_$ Via Muon Neutrino to Electron Neutrino Oscillations in the MINOS Experiment written by and published by . This book was released on 2011 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the primary goals in neutrino physics at the present moment is to make a measurement of the neutrino oscillation parameter $\theta_$. This parameter, in addition to being unknown, could potentially allow for the introduction of CP violation into the lepton sector. The MINOS long-baseline neutrino oscillation experiment has the ability to make a measurement of this parameter, by looking for the oscillation of muon neutrinos to electron neutrinos between a Near and Far Detector over a distance of 735 km. This thesis discusses the development of an analysis framework to search for this oscillation mode. Two major improvements to pre-existing analysis techniques have been implemented by the author. First, a novel particle ID technique based on strip topology, known as the Library Event Matching (LEM) method, is optimized for use in MINOS. Second, a multiple bin likelihood method is developed to fit the data. These two improvements, when combined, increase MINOS' sensitivity to $\sin^2(2\theta_)$ by 27\% over previous analyses. This thesis sees a small excess over background in the Far Detector. A Frequentist interpretation of the data rules out $\theta_=0$ at 91\%. A Bayesian interpretation of the data is also presented, placing the most stringent upper boundary on the oscillation parameter to date, at $\sin^2(2\theta_)
Author : PANAYOTA CHRYSICOPOULOU
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (244 download)
Download or read book A SEARCH FOR NEUTRINO OSCILLATIONS IN A MUON NEUTRINO BEAM AT BROOKHAVEN NATIONAL LABORATORY (NEW YORK). written by PANAYOTA CHRYSICOPOULOU and published by . This book was released on 1989 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: deviations. If this result is interpreted as neutrino oscillations then in the $sin\sp22\theta- \delta m\sp2$ plane of oscillations for the $v\sb\mu\to v\sb{e}$ channel it allows values of $\delta m\sp2$ between 1 and 10 $eV\sp2$ and 1% for $sin\sp22\theta$. Other interpretations are also possible.
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ISBN 13 :
Total Pages : 592 pages
Book Rating : 4.0/5 ( download)
Download or read book High Energy Physics Index written by and published by . This book was released on 1991 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jocelyn R. Monroe
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.:/5 (316 download)
Download or read book A Combined Muon-neutrino and Electron-neutrino Oscillation Search at MiniBooNE. written by Jocelyn R. Monroe and published by . This book was released on 2006 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: MiniBooNE seeks to corroborate or refute the unconfirmed oscillation result from the LSND experiment. If correct, the result implies that a new kind of massive neutrino, with no weak interactions, participates in neutrino oscillations. MiniBooNE searches for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations with the Fermi National Accelerator Laboratory 8 GeV beam line, which produces a {nu}{sub {mu}} beam with an average energy of {approx} 0.8 GeV and an intrinsic {nu}{sub e} content of 0.4%. The neutrino detector is a 6.1 m radius sphere filled with CH{sub 2}, viewed by 1540 photo-multiplier tubes, and located 541 m downstream from the source. This work focuses on the estimation of systematic errors associated with the neutrino flux and neutrino interaction cross section predictions, and in particular, on constraining these uncertainties using in-situ MiniBooNE {nu}{sub {mu}} charged current quasielastic (CCQE) scattering data. A data set with {approx} 100,000 events is identified, with 91% CCQE purity. This data set is used to measure several parameters of the CCQE cross section: the axial mass, the Fermi momentum, the binding energy, and the functional dependence of the axial form factor on four-momentum transfer squared. Constraints on the {nu}{sub {mu}} and {nu}{sub e} fluxes are derived using the {nu}{sub {mu}} CCQE data set. A Monte Carlo study of a combined {nu}{sub {mu}} disappearance and {nu}{sub e} appearance oscillation fit is presented, which improves the {nu}{sub {mu}} {yields} {nu}{sub e} oscillation sensitivity of MiniBooNE with respect to a {nu}{sub e} appearance-only fit by 1.2-1.5{sigma}, depending on the value of {Delta}m{sup 2}.
Author : Ian E. Stockdale
Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (128 download)
Download or read book A Search for Neutrino Oscillations with Large Values of Delta-m-squared written by Ian E. Stockdale and published by . This book was released on 1984 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
