493 research outputs found
Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data
The longstanding discrepancy between bubble chamber measurements of
-induced single pion production channels has led to large
uncertainties in pion production cross section parameters for many years. We
extend the reanalysis of pion production data in deuterium bubble chambers
where this discrepancy is solved (Wilkinson et al., PRD 90 (2014) 112017) to
include the and channels, and use the resulting data to fit the parameters of
the GENIE (Rein-Sehgal) pion production model. We find a set of parameters that
can describe the bubble chamber data better than the GENIE default parameters,
and provide updated central values and reduced uncertainties for use in
neutrino oscillation and cross section analyses which use the GENIE model. We
find that GENIE's non-resonant background prediction has to be significantly
reduced to fit the data, which may help to explain the recent discrepancies
between simulation and data observed by the MINERvA coherent pion and NOvA
oscillation analyses.Comment: v3: Updated to match published versio
A Small Target Neutrino Deep-Inelastic Scattering Experiment at the First Muon Collider
Several different scenarios for neutrino scattering experiments using a
neutrino beam from the muon collider complex are discussed. The physics reach
of a neutrino experiment at the front end of a muon collider is shown to extend
far beyond that of current neutrino experiments, since the high intensity
neutrino beams one would see at the muon collider allow for a large flexibility
in choosing neutrino targets. Measurements of quark spin, A-dependence of the
structure function and neutral current chiral couplings to quarks are
outlined.Comment: 7 pages, 2 figures, to appear in the proceedings of the Workshop on
Physics at the First Muon Collider and at the Front End of a Muon Collider,
November 1997, Fermila
The 31-Tone Tuning System of Nicola Vicentino and the Toroidal Tonnetz: An Annotated Bibliography
Nicola Vicentino’s treatise L’antica musica ridotta alla moderna prattica (1555), from here on L’antica musica, argues that contrapuntal practices based on modes derived from the diatonic tetrachord are insufficient to express the variety of emotions possible in vocal text settings, and that composers should be inspired by the other Ancient Greek genera as described by Boethius, the chromatic and enharmonic tetrachords. To employ these alternative genera, Vicentino devised an ingenious system that extended quarter-comma mean tone temperament to a thirty-one-tone system that can be neatly approximated by a division of the octave into thirty-one equal parts
Quasi-Elastic Scattering in MINERvA
Determination of the quasi-elastic scattering cross-section over a broad
range of neutrino energies, nuclear targets and Q^2 is a primary goal of the
MINERvA experiment. We present preliminary comparisons of data and simulation
in a sample rich in anti-{\nu}_{\mu}+p\rightarrow{\mu}+n events from
approximately one eighth of the total anti-{\nu} events collected by MINERvA to
date. We discuss future plans for quasi-elastic analyses in MINERvA.Comment: submitted to the proceedings of NuInt11, The Seventh International
Workshop on Neutrino-Nucleus Interactions in the Few GeV Region, Dehradun,
India, March 201
Neutrino-electron elastic scattering for flux determination at the DUNE oscillation experiment
We study the feasibility of using neutrino-electron elastic scattering to
measure the neutrino flux in the DUNE neutrino oscillation experiment. The
neutrino-electron scattering cross section is precisely known, and the
kinematics of the reaction allow determination of the incoming neutrino energy
by precise measurement of the energy and angle of the recoiling electron. For
several possible near detectors, we perform an analysis of their ability to
measure neutrino flux in the presence of backgrounds and uncertainties. With
realistic assumptions about detector masses, we find that a liquid argon
detector, even with limitations due to angular resolution, is able to perform
better than less dense detectors with more precise event-by-event neutrino
energy measurements. We find that the absolute flux normalization uncertainty
can be reduced from ~8% to ~2%, and the uncertainty on the flux shape can be
reduced by ~20-30%
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