486 research outputs found

    Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data

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    The longstanding discrepancy between bubble chamber measurements of νμ\nu_\mu-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 νμnμpπ0\nu_{\mu}n\rightarrow \mu^{-}p\pi^{0} and νμnμnπ+\nu_{\mu}n\rightarrow \mu^{-}n\pi^{+} 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

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    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 xF3xF_3 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

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    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

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    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

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    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%