37 research outputs found
Measurement of Neutrino-Nucleon Neutral Current Elastic Scattering in MiniBooNE
Using a high-statistics sample of neutral current elastic neutrino
interactions, MiniBooNE measured the flux-averaged neutral current elastic
differential cross-section on mineral oil (). Using the latter, a
test of MC with different values of the axial vector mass has been
performed. Also, a possibility of using a sample of neutral current elastic
proton-enriched events above Cherenkov threshold to measure the ratio is discussed. This ratio is sensitive to the strange
quark contribution to the nucleon spin, .Comment: 6 pages, 4 figures, 2 tables, Proceedings of the 6th International
Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region (NuInt09
Global three-parameter model for neutrino oscillations using Lorentz violation
A model of neutrino oscillations is presented that has only three degrees of
freedom and is consistent with existing data. The model is a subset of the
renormalizable sector of the Standard-Model Extension (SME), and it offers an
alternative to the standard three-neutrino massive model. All classes of
neutrino data are described, including solar, reactor, atmospheric, and LSND
oscillations. The disappearance of solar neutrinos is obtained without
matter-enhanced oscillations. Quantitative predictions are offered for the
ongoing MiniBooNE experiment and for the future experiments OscSNS, NOvA, and
T2K.Comment: 12 pages REVTe
T-1025 IU SciBath-768 detector tests in MI-12
This is a memorandum of understanding between the Fermi National Accelerator Laboratory (Fermilab) and the experimenters of Department of Physics and Center for Exploration of Energy and Matter, Indiana University, who have committed to participate in detector tests to be carried out during the 2012 Fermilab Neutrino program. The memorandum is intended solely for the purpose of recording expectations for budget estimates and work allocations for Fermilab, the funding agencies and the participating institutions. it reflects an arrangement that currently is satisfactory to the parties; however, it is recognized and anticipated that changing circumstances of the evolving research program will necessitate revisions. The parties agree to modify this memorandum to reflect such required adjustments. Actual contractual obligations will be set forth in separate documents. The experimenters propsoe to test their prototype 'SciBat-768' detector in the MI-12 building for 3 months (February-April) in Spring 2012. The major goal of this effort is to measure or limit the flux of beam-induced neutrons in a far-off-axis (> 45{sup o}) location of the Booster Neutrino Beamline (BNB). This flux is of interest for a proposed coherent neutral-current neutrino-argon elastic scattering experiment. A second goal is to collect more test data for the SciBath-768 to enable better understanding and calibration of the device. The SciBath-768 detector successfully ran for 3 months in the MINOS Underground Area in Fall 2011 as testbeam experiment T-1014 and is currently running above ground in the MINOS service building. For the run proposed here, the experiments are requesting: space in MI-12 in which to run the SciBath detector during February-April 2012 while the BNB is operating; technical support to help with moving the equipment on site; access to power, internet, and accelerator signals; and a small office space from which to run and monitor the experiment
Dark sectors 2016 Workshop: community report
This report, based on the Dark Sectors workshop at SLAC in April 2016,
summarizes the scientific importance of searches for dark sector dark matter
and forces at masses beneath the weak-scale, the status of this broad
international field, the important milestones motivating future exploration,
and promising experimental opportunities to reach these milestones over the
next 5-10 years
US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report
This white paper summarizes the workshop "U.S. Cosmic Visions: New Ideas in
Dark Matter" held at University of Maryland on March 23-25, 2017.Comment: 102 pages + reference
The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe
The preponderance of matter over antimatter in the early Universe, the
dynamics of the supernova bursts that produced the heavy elements necessary for
life and whether protons eventually decay --- these mysteries at the forefront
of particle physics and astrophysics are key to understanding the early
evolution of our Universe, its current state and its eventual fate. The
Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed
plan for a world-class experiment dedicated to addressing these questions. LBNE
is conceived around three central components: (1) a new, high-intensity
neutrino source generated from a megawatt-class proton accelerator at Fermi
National Accelerator Laboratory, (2) a near neutrino detector just downstream
of the source, and (3) a massive liquid argon time-projection chamber deployed
as a far detector deep underground at the Sanford Underground Research
Facility. This facility, located at the site of the former Homestake Mine in
Lead, South Dakota, is approximately 1,300 km from the neutrino source at
Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino
charge-parity symmetry violation and mass ordering effects. This ambitious yet
cost-effective design incorporates scalability and flexibility and can
accommodate a variety of upgrades and contributions. With its exceptional
combination of experimental configuration, technical capabilities, and
potential for transformative discoveries, LBNE promises to be a vital facility
for the field of particle physics worldwide, providing physicists from around
the globe with opportunities to collaborate in a twenty to thirty year program
of exciting science. In this document we provide a comprehensive overview of
LBNE's scientific objectives, its place in the landscape of neutrino physics
worldwide, the technologies it will incorporate and the capabilities it will
possess.Comment: Major update of previous version. This is the reference document for
LBNE science program and current status. Chapters 1, 3, and 9 provide a
comprehensive overview of LBNE's scientific objectives, its place in the
landscape of neutrino physics worldwide, the technologies it will incorporate
and the capabilities it will possess. 288 pages, 116 figure
A measurement of the antiproton proton going to antilambda baryon lambda baryon and antiproton proon going to antisigma 0 lambda plus c.c. reactions at 1.726 GeV/c
The reactions and \bar pp\to\bar\Sigma\sp0\Lambda+c.c. were investigated at an average antiproton momentum of 1.726 0.001 GeV/c using the Low Energy Antiproton Ring (LEAR) at CERN. Total and differential cross sections, hyperon polarizations, and spin correlation coefficients were measured for these strangeness production reactions. Emphasis was placed on a comparison of the data from the reaction with that measured for the \bar pp\to\bar\Sigma\sp0\Lambda+c.c. reaction. A comparison of these complementary channels provides insight into the dynamics of strangeness production
CEvNS with a liquid argon scintillation detector
<p>This presentation was used for the Low-Radioactivity Underground Argon Workshop held at Pacific Northwest National Laboratory in Richland, Washington on March 19 - 20, 2018.</p
Physics Opportunities for the Fermilab Booster Replacement
This white paper presents opportunities afforded by the Fermilab Booster Replacement and its various options. Its goal is to inform the design process of the Booster Replacement about the accelerator needs of the various options, allowing the design to be versatile and enable, or leave the door open to, as many options as possible. The physics themes covered by the paper include searches for dark sectors and new opportunities with muons