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29 results on '"D��az, G. A."'

2. The Dynamics of Ions on Phased Radio-frequency Carpets in High Pressure Gases and Application for Barium Tagging in Xenon Gas Time Projection Chambers

Author

NEXT Collaboration, Jones, B. J. P., Raymond, A., Woodruff, K., Byrnes, N., Denisenko, A. A., Foss, F. W., Navarro, K., Nygren, D. R., Vuong, T. T., Adams, C., Almaz��n, H., ��lvarez, V., Aparicio, B., Aranburu, A. I., Arazi, L., Arnquist, I. J., Ayet, S., Azevedo, C. D. R., Bailey, K., Ballester, F., Benlloch-Rodr��guez, J. M., Borges, F. I. G. M., Bounasser, S., C��rcel, S., Carri��n, J. V., Cebri��n, S., Church, E., Conde, C. A. N., Contreras, T., Coss��o, F. P., D��az, G., D��az, J., Dickel, T., Escada, J., Esteve, R., Fahs, A., Felkai, R., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Freixa, Z, Generowicz, J., Goldschmidt, A., G��mez-Cadenas, J. J., Gonz��lez, R., Gonz��lez-D��az, D., Guenette, R., Guti��rrez, R. M., Haefner, J., Hafidi, K., Hauptman, J., Henriques, C. A. O., Hernando~Morata, J. A., Herrero-G��mez, P., Herrero, V., Ho, J., Ifergan, Y., Kekic, M., Labarga, L., Laing, A., Lebrun, P., Gutierrez, D. Lopez, L��pez-March, N., Losada, M., Mano, R. D. P., Mart��n-Albo, J., Mart��nez, A., Mart��nez-Lema, G., Mart��nez-Vara, M., McDonald, A. D., Meziani, Z. E., Mistry, K., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Vidal, J. Mu��oz, Novella, P., Oblak, E., Odriozola-Gimeno, M., Palmeiro, B., Para, A., P��rez, J., Querol, M., Redwine, A. B., Renner, J., Ripoll, L., Rivilla, I., Garc��a, Y. Rodr��guez, Rodr��guez, J., Rogero, C., Rogers, L., Romeo, B., Romo-Luque, C., Santos, F. P., Santos, J. M. F. dos, Sim��n, A., Sorel, M., Stanford, C., Teixeira, J. M. R., Thapa, P., Toledo, J. F., Torrent, J., Us��n, A., Veloso, J. F. C. A., Webb, R., Weiss-Babai, R., White, J. T., and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods for modeling RF ion transport at densities where dynamics are strongly influenced by buffer gas collisions. An analytic description of levitating and sweeping forces from phased arrays is obtained, then thermodynamic and kinetic principles are used to calculate ion loss rates in the presence of collisions. This methodology is validated against detailed microscopic SIMION simulations. We then explore a parameter space of special interest for neutrinoless double beta decay experiments: transport of barium ions in xenon at pressures from 1 to 10 bar. Our computations account for molecular ion formation and pressure dependent mobility as well as finite temperature effects. We discuss the challenges associated with achieving suitable operating conditions, which lie beyond the capabilities of existing devices, using presently available or near-future manufacturing techniques., 26 pages, 16 figures v2: author list update and pre-journal submission adjustments

Published
2021

3. Nucleon binding energy and transverse momentum imbalance in neutrino-nucleus reactions

Author

Cai, T., Lu, X. -G., Harewood, L. A., Wret, C., Akbar, F., Andrade, D. A., Ascencio, M. V., Bellantoni, L., Bercellie, A., Betancourt, M., Bodek, A., Bonilla, J. L., Bravar, A., Budd, H., Caceres, G., Carneiro, M. F., Coplowe, D., da Motta, H., Dar, Zubair Ahmad, D��az, G. A., Felix, J., Fields, L., Filkins, A., Fine, R., Gago, A. M., Gallagher, H., Ghosh, A., Gran, R., Harris, D. A., Henry, S., Jena, S., Jena, D., Kleykamp, J., Kordosky, M., Last, D., Le, T., Lozano, A., Maher, E., Manly, S., Mann, W. A., Mauger, C., McFarland, K. S., Messerly, B., Miller, J., Morf��n, J. G., Naples, D., Nelson, J. K., Nguyen, C., Norrick, A., Nuruzzaman, Olivier, A., Paolone, V., Perdue, G. N., Ram��rez, M. A., Ransome, R. D., Ruterbories, D., Schellman, H., Salinas, C. J. Solano, Su, H., Sultana, M., Syrotenko, V. S., Valencia, E., Wark, D., Weber, A., Wospakrik, M., Yaeggy, B., and Zazueta, L.

Subjects
Physics, Proton, 010308 nuclear & particles physics, Binding energy, Momentum transfer, FOS: Physical sciences, Computer Science::Digital Libraries, 01 natural sciences, High Energy Physics - Experiment, 3. Good health, Momentum, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Neutrino, 010306 general physics, Nucleon, Fermi gas, Energy (signal processing)
Abstract

We have measured new observables based on the final state kinematic imbalances in the mesonless production of $\nu_\mu+A\rightarrow\mu^-+p+X$ in the $\text{MINER}\nu\text{A}$ tracker. Components of the muon-proton momentum imbalances parallel ($\delta p_\mathrm{Ty}$) and perpendicular($\delta p_\mathrm{Tx}$) to the momentum transfer in the transverse plane are found to be sensitive to the nuclear effects such as Fermi motion, binding energy and non-QE contributions. The QE peak location in $\delta p_\mathrm{Ty}$ is particularly sensitive to the binding energy. Differential cross sections are compared to predictions from different neutrino interaction models. The Fermi gas models presented in this study cannot simultaneously describe features such as QE peak location, width and the non-QE events contributing to the signal process. Correcting the GENIE's binding energy implementation according to theory causes better agreement with data. Hints of proton left-right asymmetry are observed in $\delta p_\mathrm{Tx}$. Better modeling of the binding energy can reduce bias in neutrino energy reconstruction and these observables can be applied in current and future experiments to better constrain nuclear effects., Comment: 14 pages, 12 figures; Added data release file in .root format

Published
2020
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4. Double-Differential Inclusive Charged-Current $��_��$ Cross Sections on Hydrocarbon in MINERvA at $\langle E_�� \rangle \sim$ 3.5 GeV

Author

Filkins, A., Ruterbories, D., Liu, Y., Dar, Z. Ahmad, Akbar, F., Altinok, O., Andrade, D. A., Ascencio, M. V., Bashyal, A., Bercellie, A., Betancourt, M., Bodek, A., Bonilla, J. L., Bravar, A., Budd, H., Caceres, G., Cai, T., Carneiro, M. F., da Motta, H., Dytman, S. A., D��az, G. A., Felix, J., Fields, L., Fine, R., Gago, A. M., Gallagher, H., Ghosh, A., Gran, R., Harris, D. A., Henry, S., Jena, S., Jena, D., Kleykamp, J., Kordosky, M., Last, D., Le, T., LeClerc, J., Lozano, A., Lu, X. -G., Maher, E., Manly, S., Mann, W. A., Mauger, C., McFarland, K. S., McGowan, A. M., Messerly, B., Miller, J., Morf��n, J. G., Nelson, J. K., Nguyen, C., Norrick, A., Olivier, A., Paolone, V., Perdue, G. N., Ram��rez, M. A., Ransome, R. D., Ray, H., Schellman, H., Salinas, C. J. Solano, Su, H., Sultana, M., Syrotenko, V. S., Valencia, E., Wospakrik, M., Wret, C., Yaeggy, B., and Zazueta, L.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment
Abstract

MINERvA reports inclusive charged-current cross sections for muon neutrinos on hydrocarbon in the NuMI beamline. We measured the double-differential cross section in terms of the longitudinal and transverse muon momenta, as well as the single-differential cross sections in those variables. The data used in this analysis correspond to an exposure of $3.34 \times 10^{20}$ protons on target with a peak neutrino energy of approximately 3.5 GeV. Measurements are compared to the GENIE, NuWro and GiBUU neutrino cross-section predictions, as well as a version of GENIE modified to produce better agreement with prior exclusive MINERvA measurements. None of the models or variants were able to successfully reproduce the data across the entire phase space, which includes areas dominated by each interaction channel., 20 pages, 16 figures

Published
2020
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5. Measurement of $\bar��_��$ charged-current single $��^{-}$ production on hydrocarbon in the few-GeV region using MINERvA

Author

Le, T., Akbar, F., Aliaga, L., Andrade, D. A., Ascencio, M. V., Bashyal, A., Bercellie, A., Betancourt, M., Bodek, A., Bonilla, J. L., Bravar, A., Budd, H., Caceres, G., Cai, T., Carneiro, M. F., Coplowe, D., Dytman, S. A., D��az, G. A., Felix, 5 J., Fields, L., Filkins, A., Fine, R., Fiza, N., Gago, A. M., Gallagher, H., Ghosh, A., Gran, R., Harris, D. A., Henry, S., Jena, S., Kleykamp, J., Kordosky, M., Last, D., Lu, X. -G., Maher, E., Manly, S., Mann, W. A., Mauger, C., McFarland, K. S., McGowan, A. M., Messerly, B., Miller, J., Morf��n, J. G., Naples, D., Nelson, J. K., Nguyen, C., Norrick, A., Nuruzzaman, Olivier, A., Paolone, V., Perdue, G. N., Ram��rez, M. A., Ransome, R. D., Ray, H., Rimal, D., Ruterbories, D., Schellman, H., Sobczyk, J. T., Salinas, C. J. Solano, Su, H., Sultana, M., Syrotenko, V. S., Valencia, E., Wospakrik, M., Yaeggy, B., and Zazueta, L.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract

The antineutrino scattering channel $\bar��_�� \,\text{CH} \rightarrow ��^{+} \,��^{-} \,X$(nucleon(s)) is analyzed in the incident energy range 1.5 to 10 GeV using the MINERvA detector at Fermilab. Differential cross sections are reported as functions of $��^{+}$ momentum and production angle, $��^{-}$ kinetic energy and production angle, and antineutrino energy and squared four-momentum transfer. Distribution shapes are generally reproduced by simulations based on the GENIE, NuWro, and GiBUU event generators, however GENIE (GiBUU) overestimates (underestimates) the cross-section normalizations by 8% (10%). Comparisons of data with the GENIE-based reference simulation probe conventional treatments of cross sections and pion intranuclear rescattering. The distribution of non-track vertex energy is used to decompose the signal sample into reaction categories, and cross sections are determined for the exclusive reactions $��^{+} ��^{-} n$ and $ ��^+ ��^{-} p$. A similar treatment applied to the published MINERvA sample $\bar��_�� \,\text{CH} \rightarrow ��^{+} \,��^{0} \,X$(nucleon(s)) has determined the $��^{+} ��^{0} n$ cross section, and the latter is used with $��(��^{-} n)$ and $��(��^{-} p)$ to carry out an isospin decomposition of $\bar��_��$-induced CC($��$). The ratio of magnitudes and relative phase for isospin amplitudes $A_{3}$ and $A_{1}$ thereby obtained are: $R^{\bar��} = 0.99 \pm 0.19$ and $��^{\bar��} = 93^{\circ} \pm 7^{\circ}$. Our results are in agreement with bubble chamber measurements made four decades ago., 22 pages, 17 figures

Published
2019
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6. Measurement of $��_��$ charged-current single $��^{0}$ production on hydrocarbon in the few-GeV region using MINERvA

Author

Altinok, O., Le, T., Aliaga, L., Bellantoni, L., Bercellie, A., Betancourt, M., Bodek, A., Bravar, A., Budd, H., Vera, G. F. R. Caceres, Cai, T., Carneiro, M. F., da Motta, H., Dytman, S. A., D��az, G. A., Felix, J., Fields, L., Fine, R., Gago, A. M., Galindo, R., Gallagher, H., Ghosh, A., Gran, R., Han, J. Y., Harris, D. A., Kleykamp, J., Kordosky, M., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., Caicedo, D. A. Martinez, McFarland, K. S., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morf��n, J. G., Naples, D., Nelson, J. K., Norrick, A., Nuruzzaman, Paolone, V., Patrick, C. E., Perdue, G. N., Ramirez, M. A., Ransome, R. D., Ray, H., Ren, L., Rimal, D., Rodrigues, P. A., Ruterbories, D., Schellman, H., Sobczyk, J. T., Salinas, C. J. Solano, Sultana, M., Falero, S. S��nchez, Valencia, E., Wolcott, J., and Yaeggy, B.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment
Abstract

The semi-exclusive channel $��_��+\textrm{CH}\rightarrow��^{-}��^{0}+\textrm{nucleon(s)}$ is analyzed using MINERvA exposed to the low-energy NuMI $��_��$ beam with spectral peak at $E_�� \simeq 3$ GeV. Differential cross sections for muon momentum and production angle, $��^{0}$ kinetic energy and production angle, and for squared four-momentum transfer are reported, and the cross section $��(E_��)$ is obtained over the range 1.5 GeV $\leq E_��, 19 pages, 22 figures

Published
2017
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7. Measurements of the Inclusive Neutrino and Antineutrino Charged Current Cross Sections in MINERvA Using the Low-$��$ Flux Method

Author

MINERvA Collaboration, DeVan, J., Ren, L., Aliaga, L., Altinok, O., Bellantoni, L., Bercellie, A., Betancourt, M., Bodek, A., Budd, H., Cai, T., Carneiro, M. F., da Motta, H., Devan, J., Dytman, S. A., D��az, G. A., Eberly, B., Endress, E., Felix, J., Fields, L., Fine, R., Gago, A. M., Galindo, R., Gallagher, H., Ghosh, A., Gran, R., Harris, D. A., Higuera, A., Hurtado, K., Kleykamp, J., Kordosky, M., Le, T., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., Caicedo, D. A. Martinez, McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morf��n, J. G., Mousseau, J., Naples, D., Nelson, J. K., Norrick, A., Nuruzzaman, Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Ramirez, M. A., Ransome, R. D., Ray, H., Rimal, D., Rodrigues, P. A., Ruterbories, D., Schellman, H., Salinas, C. J. Solano, Sultana, M., Falero, S. S��nchez, Tice, B. G., Valencia, E., Wolcott, J., Wospakrik, M., and Zhang, D.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract

The total cross sections are important ingredients for the current and future neutrino oscillation experiments. We present measurements of the total charged-current neutrino and antineutrino cross sections on scintillator (CH) in the NuMI low-energy beamline using an {\em in situ} prediction of the shape of the flux as a function of neutrino energy from 2--50 GeV. This flux prediction takes advantage of the fact that neutrino and antineutrino interactions with low nuclear recoil energy ($��$) have a nearly constant cross section as a function of incident neutrino energy. This measurement is the lowest energy application of the low-$��$ flux technique, the first time it has been used in the NuMI antineutrino beam configuration, and demonstrates that the technique is applicable to future neutrino beams operating at multi-GeV energies. The cross section measurements presented are the most precise measurements to date below 5 GeV., 8 pages, 6 figures, and 12 supplemental tables of fluxes, cross sections, breakdowns of their uncertainties, and their covariance matrices

Published
2016
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8. Measurement of $K^{+}$ production in charged-current $��_��$ interactions

Author

Marshall, C. M., Aliaga, L., Altinok, O., Bellantoni, L., Bercellie, A., Betancourt, M., Bodek, A., Bravar, A., Budd, H., Cai, T., Carneiro, M. F., Chvojka, J., da Motta, H., Devan, J., Dytman, S. A., D��az, G. A., Eberly, B., Endress, E., Felix, J., Fields, L., Filkins, A., Fine, R., Gago, A. M., Galindo, R., Gallagher, H., Ghosh, A., Golan, T., Gran, R., Griswold, S., Harris, D. A., Higuera, A., Hurtado, K., Kiveni, M., Kleykamp, J., Kordosky, M., Le, T., Maher, E., Majoros, I., Manly, S., Mann, W. A., Caicedo, D. A. Martinez, McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morf��n, J. G., Mousseau, J., Naples, D., Nelson, J. K., Norrick, A., Nuruzzaman, Osta, J., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ramirez, M. A., Ransome, R. D., Ray, H., Ren, L., Rimal, D., Rodrigues, P. A., Rosenberg, M., Ruterbories, D., Schellman, H., Schmitz, D. W., Shadler, L. A., Simon, C., Salinas, C. J. Solano, Falero, S. S��nchez, Tice, B. G., Valencia, E., Walton, T., Wang, Z., Watkins, P., Wiley, K., Wolcott, J., Wospakrik, M., and Zhang, D.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det)
Abstract

Production of K^{+} mesons in charged-current ��_�� interactions on plastic scintillator (CH) is measured using MINERvA exposed to the low-energy NuMI beam at Fermilab. Timing information is used to isolate a sample of 885 charged-current events containing a stopping K^{+} which decays at rest. The differential cross section in K^{+} kinetic energy, d��/dT_{K}, is observed to be relatively flat between 0 and 500 MeV. Its shape is in good agreement with the prediction by the \textsc{genie} neutrino event generator when final-state interactions are included, however the data rate is lower than the prediction by 15\%., added ancillary files with cross-section, statistical uncertainty covariance matrix and systematic uncertainty covariance matrix decomposed into flux and non-flux components

Published
2016
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9. Single neutral pion production by charged-current $\bar��_��$ interactions on hydrocarbon at $\langle E_��\rangle = $ 3.6 GeV

Author

Le, T., Palomino, J. L., Aliaga, L., Altinok, O., Bercellie, A., Bodek, A., Bravar, A., Brooks, W. K., Butkevich, A., Caicedo, D. A. Martinez, Carneiro, M. F., Christy, M. E., Chvojka, J., da Motta, H., Devan, J., Dytman, S. A., D��az, G. A., Eberly, B., Felix, J., Fields, L., Fine, R., Gago, A. M., Gallagher, H., Gran, R., Harris, D. A., Higuera, A., Hurtado, K., Kordosky, M., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., McFarland, K. S., McGivern, C. L., McGowan, A. M., Miller, J., Morf��n, J. G., Mousseau, J., Nelson, J. K., Norrick, A., Osta, J., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ramirez, M. A., Ransome, R. D., Ray, H., Ren, L., Rodrigues, P. A., Ruterbories, D., Schellman, H., Schmitz, D. W., Sobczyk, J. T., Salinas, C. J. Solano, Tagg, N., Tice, B. G., Valencia, E., Walton, T., Wolcott, J., Yepes-Ramirez, H., Zavala, G., Zhang, D., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Single neutral pion production via muon antineutrino charged-current interactions in plastic scintillator (CH) is studied using the \minerva detector exposed to the NuMI low-energy, wideband antineutrino beam at Fermilab. Measurement of this process constrains models of neutral pion production in nuclei, which is important because the neutral-current analog is a background for $\bar��_e$ appearance oscillation experiments. The differential cross sections for $��^0$ momentum and production angle, for events with a single observed $��^0$ and no charged pions, are presented and compared to model predictions. These results comprise the first measurement of the $��^0$ kinematics for this process., 6 pages, 5 figures, submitted to Physics Letters B

Published
2015
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10. Measurement of Ratios of $��_��$ Charged-Current Cross Sections on C, Fe, and Pb to CH at Neutrino Energies 2-20 GeV

Author

Tice, B. G., Datta, M., Mousseau, J., Aliaga, L., Altinok, O., Sazo, M. G. Barrios, Betancourt, M., Bodek, A., Bravar, A., Brooks, W. K., Budd, H., Bustamante, M. J., Butkevich, A., Caicedo, D. A. Martinez, Castromonte, C. M., Christy, M. E., Chvojka, J., da Motta, H., Devan, J., Dytman, S. A., D��az, G. A., Eberly, B., Felix, J., Fields, L., Fiorentini, G. A., Gago, A. M., Gallagher, H., Gran, R., Harris, D. A., Higuera, A., Hurtado, K., Jerkins, M., Kafka, T., Kordosky, M., Kulagin, S. A., Le, T., Maggi, G., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., Mari, C. Martin, McFarland, K. S., McGivern, C. L., McGowan, A. M., Miller, J., Mislivec, A., Morf��n, J. G., Muhlbeier, T., Naples, D., Nelson, J. K., Norrick, A., Osta, J., Palomino, J. L., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ransome, R. D., Ray, H., Ren, L., Rodrigues, P. A., Savage, D. G., Schellman, H., Schmitz, D. W., Simon, C., Snider, F. D., Salinas, C. J. Solano, Tagg, N., Valencia, E., Vel��squez, J. P., Walton, T., Wolcott, J., Zavala, G., Zhang, D., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract

We present measurements of $��_��$ charged-current cross section ratios on carbon, iron, and lead relative to a scintillator (CH) using the fine-grained MINERvA detector exposed to the NuMI neutrino beam at Fermilab. The measurements utilize events of energies $2=8~GeV$, which have a reconstructed $��^{-}$ scattering angle less than $17^\circ$ to extract ratios of inclusive total cross sections as a function of neutrino energy $E_��$ and flux-integrated differential cross sections with respect to the Bjorken scaling variable $x$. These results provide the first high-statistics direct measurements of nuclear effects in neutrino scattering using different targets in the same neutrino beam. Measured cross section ratios exhibit a relative depletion at low $x$ and enhancement at large $x$. Both become more pronounced as the nucleon number of the target nucleus increases. The data are not reproduced by GENIE, a conventional neutrino-nucleus scattering simulation, or by the alternative models for the nuclear dependence of inelastic scattering that are considered., 6 pages, 2 figures, 7 pages of supplemental material. Published in Physical Review Letters June 13, 2014

Published
2014
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11. Measurement of Coherent Production of $��^\pm$ in Neutrino and Anti-Neutrino Beams on Carbon from $E_��$ of $1.5$ to $20$ GeV

Author

Higuera, A., Mislivec, A., Aliaga, L., Altinok, O., Bercellie, A., Betancourt, M., Bodek, A., Bravar, A., Brooks, W. K., Budd, H., Butkevich, A., Carneiro, M. F., Castromonte, C. M., Christy, M. E., Chvojka, J., da Motta, H., Devan, J., Dytman, S. A., D��az, G. A., Eberly, B., Felix, J., Fields, L., Fine, R., Fiorentini, G. A., Gallagher, H., Gomez, A., Gran, R., Harris, D. A., Hurtado, K., Kleykamp, J., Kordosky, M., Le, T., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., Caicedo, D. A. Martinez, McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Morf��n, J. G., Mousseau, J., Muhlbeier, T., Naples, D., Nelson, J. K., Norrick, A., Osta, J., Palomino, J. L., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Ransome, R. D., Ray, H., Ren, L., Rodrigues, P. A., Ruterbories, D., Schellman, H., Schmitz, D. W., Snider, F. D., Salinas, C. J. Solano, Tagg, N., Tice, B. G., Valencia, E., Walton, T., Wolcott, J., Wospakrik, M., Zavala, G., Zhang, D., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Nuclear Theory, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Neutrino-induced coherent charged pion production on nuclei, $\stackrel{(-)}��_��A\to��^\pm��^\mp A$ is a rare, inelastic interaction in which a small squared four-momentum $| t|$ is transferred to the recoil nucleus leaving it intact in the reaction. In the scintillator tracker of MINERvA, we remove events with evidence of particles from nuclear breakup and reconstruct $| t|$ from the final state pion and muon. We select low $| t|$ events to isolate a sample rich in coherent candidates. By selecting low $| t|$ events we produce a model-independent measurement of the differential cross section for coherent scattering of neutrinos and anti-neutrinos on carbon. We find poor agreement with the predicted kinematics in neutrino generators used by current oscillation experiments., 13 pages, 4 figures. v3->v4 corrections to several inline formulas and fixes to citations. v2->v3 revision includes minor corrections to text and tables, the final ArgoNeuT result in Figure 3, and ancillary files with the tables in CSV format. v1->v2 revision added comparisons to NEUT generator and updated estimate of the diffractive-like process on protons

Published
2014
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12. Charged Pion Production in $��_��$ Interactions on Hydrocarbon at $\langle E_��\rangle$= 4.0 GeV

Author

Eberly, B., Aliaga, L., Altinok, O., Sazo, M. G. Barrios, Bellantoni, L., Betancourt, M., Bodek, A., Bravar, A., Budd, H., Bustamante, M. J., Butkevich, A., Caicedo, D. A. Martinez, Carneiro, M. F., Christy, M. E., Chvojka, J., da Motta, H., Datta, M., Devan, J., Dytman, S. A., D��az, G. A., Felix, J., Fields, L., Fine, R., Fiorentini, G. A., Gago, A. M., Galindo, R., Gallagher, H., Golan, T., Gran, R., Harris, D. A., Higuera, A., Hurtado, K., Kafka, T., Kleykamp, J., Kordosky, M., Le, T., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morf��n, J. G., Mousseau, J., Muhlbeier, T., Naples, D., Nelson, J. K., Norrick, A., Osta, J., Palomino, J. L., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ramirez, M. A., Ransome, R. D., Ray, H., Ren, L., Rodrigues, P. A., Ruterbories, D., Salazar, G., Schellman, H., Schmitz, D. W., Simon, C., Sobczyk, J. T., Salinas, C. J. Solano, Tagg, N., Tice, B. G., Valencia, E., Walton, T., Wolcott, J., Wospakrik, M., Zavala, G., Zegarra, A., Zhang, D., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Physics::Accelerator Physics, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, Computer Science::Other
Abstract

Charged pion production via charged current $��_��$ interactions on plastic (CH) is studied using the MINERvA detector exposed to the NuMI wideband neutrino beam at Fermilab. Events with hadronic invariant mass W $, 23 pages, 13 figures. Submitted to Physical Review D

Published
2014
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13. Measurement of muon plus proton final states in $��_��$ Interactions on Hydrocarbon at $\langle$$E_��$$\rangle$ = 4.2 GeV

Author

Walton, T., Betancourt, M., Aliaga, L., Altinok, O., Bodek, A., Bravar, A., Budd, H., Bustamante, M. J., Butkevich, A., Caicedo, D. A. Martinez, Carneiro, M. F., Castromonte, C. M., Christy, M. E., Chvojka, J., da Motta, H., Datta, M., Devan, J., Dytman, S. A., D��az, G. A., Eberly, B., Felix, J., Fields, L., Fine, R., Fiorentini, G. A., Gago, A. M., Gallagher, H., Gran, R., Harris, D. A., Higuera, A., Hurtado, K., Kleykamp, J., Kordosky, M., Kulagin, S. A., Le, T., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., Mari, C. Martin, McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morf��n, J. G., Mousseau, J., Muhlbeier, T., Naples, D., Nelson, J. K., Norrick, A., Osta, J., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ransome, R. D., Ray, H., Ren, L., Rodrigues, P. A., Ruterbories, D., Schellman, H., Schmitz, D. W., Simon, C., Snider, F. D., Sobczyk, J. T., Salinas, C. J. Solano, Tagg, N., Tice, B. G., Valencia, E., Wolcott, J., Wospakrik, M., Zavala, G., Zhang, D., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Nuclear Theory, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract

A study of charged-current muon neutrino scattering on hydrocarbon in which the final state includes a muon and a proton and no pions is presented. Although this signature has the topology of neutrino quasielastic scattering from neutrons, the event sample contains contributions from both quasielastic and inelastic processes where pions are absorbed in the nucleus. The analysis accepts events with muon production angles up to 70$^{\circ}$ and proton kinetic energies greater than 110 MeV. The extracted cross section, when based completely on hadronic kinematics, is well-described by a simple relativistic Fermi gas nuclear model including the neutrino event generator modeling for inelastic processes and particle transportation through the nucleus. This is in contrast to the quasielastic cross section based on muon kinematics, which is best described by an extended model that incorporates multi-nucleon correlations. This measurement guides the formulation of a complete description of neutrino-nucleus interactions that encompasses the hadronic as well as the leptonic aspects of this process., total 10 pages, 5 figures, 2 pages of supplemental materials. Published in Physical Review D (Rapid Communication) April 1, 2015

Published
2014
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14. Measurement of Muon Antineutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_�� ~ 3.5 GeV

Author

The MINERvA Collaboration, Fields, L., Chvojka, J., Aliaga, L., Altinok, O., Baldin, B., Baumbaugh, A., Bodek, A., Boehnlein, D., Boyd, S., Bradford, R., Brooks, W. K., Budd, H., Butkevich, A., Caicedo, D. A. Martinez, Castromonte, C. M., Christy, M. E., Chung, H., Clark, M., da Motta, H., Damiani, D. S., Danko, I., Datta, M., Day, M., DeMaat, R., Devan, J., Draeger, E., Dytman, S. A., D��az, G. A., Eberly, B., Edmondson, D. A., Felix, J., Fitzpatrick, T., Fiorentini, G. A., Gago, A. M., Gallagher, H., George, C. A., Gielata, J. A., Gingu, C., Gobbi, B., Gran, R., Grossman, N., Hanson, J., Harris, D. A., Heaton, J., Higuera, A., Howley, I. J., Hurtado, K., Jerkins, M., Kafka, T., Kaisen, J., Kanter, M. O., Keppel, C. E., Kilmer, J., Kordosky, M., Krajeski, A. H., Kulagin, S. A., Le, T., Lee, H., Leister, A. G., Locke, G., Maggi, G., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., McFarland, K. S., McGivern, C. L., McGowan, A. M., Mislivec, A., Morf��n, J. G., Mousseau, J., Naples, D., Nelson, J. K., Niculescu, G., Niculescu, I., Ochoa, N., O'Connor, C. D., Olsen, J., Osmanov, B., Osta, J., Palomino, J. L., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Pe��a, C., Rakotondravohitra, L., Ransome, R. D., Ray, H., Ren, L., Rodrigues, P. A., Rude, C., Sassin, K. E., Schellman, H., Schmitz, D. W., Schneider, R. M., Schulte, E. C., Simon, C., Snider, F. D., Snyder, M. C., Sobczyk, J. T., Salinas, C. J. Solano, Tagg, N., Tan, W., Tice, B. G., Tzanakos, G., Vel��squez, J. P., Walding, J., Walton, T., Wolcott, J., Wolthuis, B. A., Woodward, N., Zavala, G., Zeng, H. B., Zhang, D., Zhu, L. Y., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

We have isolated muon anti-neutrino charged-current quasi-elastic interactions occurring in the segmented scintillator tracking region of the MINERvA detector running in the NuMI neutrino beam at Fermilab. We measure the flux-averaged differential cross-section, d��/dQ^2, and compare to several theoretical models of quasi-elastic scattering. Good agreement is obtained with a model where the nucleon axial mass, M_A, is set to 0.99 GeV/c^2 but the nucleon vector form factors are modified to account for the observed enhancement, relative to the free nucleon case, of the cross-section for the exchange of transversely polarized photons in electron-nucleus scattering. Our data at higher Q^2 favor this interpretation over an alternative in which the axial mass is increased., 8 pages, 5 figures. Added correlation between neutrino and anti-neutrino results in ancillary text files (CSV)

Published
2013
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15. Measurement of Muon Neutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_�� ~ 3.5 GeV

Author

The MINERvA Collaboration, Fiorentini, G. A., Schmitz, D. W., Rodrigues, P. A., Aliaga, L., Altinok, O., Baldin, B., Baumbaugh, A., Bodek, A., Boehnlein, D., Boyd, S., Bradford, R., Brooks, W. K., Budd, H., Butkevich, A., Caicedo, D. A. Martinez, Castromonte, C. M., Christy, M. E., Chung, H., Chvojka, J., Clark, M., da Motta, H., Damiani, D. S., Danko, I., Datta, M., Day, M., DeMaat, R., Devan, J., Draeger, E., Dytman, S. A., D��az, G. A., Eberly, B., Edmondson, D. A., Felix, J., Fitzpatrick, T., Fields, L., Gago, A. M., Gallagher, H., George, C. A., Gielata, J. A., Gingu, C., Gobbi, B., Gran, R., Grossman, N., Hanson, J., Harris, D. A., Heaton, J., Higuera, A., Howley, I. J., Hurtado, K., Jerkins, M., Kafka, T., Kaisen, J., Kanter, M. O., Keppel, C. E., Kilmer, J., Kordosky, M., Krajeski, A. H., Kulagin, S. A., Le, T., Lee, H., Leister, A. G., Locke, G., Maggi, G., Maher, E., Manly, S., Mann, W. A., Marshall, C. M., McFarland, K. S., McGivern, C. L., McGowan, A. M., Mislivec, A., Morf��, J. G., Mousseau, J., Naples, D., Nelson, J. K., Niculescu, G., Niculescu, I., Ochoa, N., O'Connor, C. D., Olsen, J., Osmanov, B., Osta, J., Palomino, J. L., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Pe��a, C., Rakotondravohitra, L., Ransome, R. D., Ray, H., Ren, L., Rude, C., Sassin, K. E., Schellman, H., Schneider, R. M., Schulte, E. C., Simon, C., Snider, F. D., Snyder, M. C., Sobczyk, J. T., Salinas, C. J. Solano, Tagg, N., Tan, W., Tice, B. G., Tzanakos, G., Vel��squez, J. P., Walding, J., Walton, T., Wolcott, J., Wolthuis, B. A., Woodward, N., Zavala, G., Zeng, H. B., Zhang, D., Zhu, L. Y., and Ziemer, B. P.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract

We report a study of muon neutrino charged-current quasi-elastic events in the segmented scintillator inner tracker of the MINERvA experiment running in the NuMI neutrino beam at Fermilab. The events were selected by requiring a ��^- and low calorimetric recoil energy separated from the interaction vertex. We measure the flux-averaged differential cross-section, d��/dQ^2, and study the low energy particle content of the final state. Deviations are found between the measured d��/dQ^2 and the expectations of a model of independent nucleons in a relativistic Fermi gas. We also observe an excess of energy near the vertex consistent with multiple protons in the final state., 7 pages, 5 figures. Added correlation between neutrino and anti-neutrino result in ancillary files (CSV)

Published
2013
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21. Erratum

Author

Curr�s-Collazo, MC, primary, Chin, C, additional, D�az, G, additional, Stivers, C, additional, Bozzetti, L, additional, and Tran, LY, additional

Published
2000
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23. QEEG in a Public Health system

Author

Vald�s, P., primary, Vald�s, M., additional, Carballo, J. A., additional, Alvarez, A., additional, D�az, G. F., additional, Biscay, R., additional, P�rez, M. C., additional, Szava, S., additional, Viru�s, T., additional, and Quesada, M. E., additional

Published
1992
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24. Design, methods and demographic findings of the DEMINVALL survey: a population-based study of Dementia in Valladolid, Northwestern Spain.

Author

Tola-Arribas, Miguel Angel, Garea, Mar¡a Jos‚, Yugueros, Mar¡a Isabel, Ortega-Val¡n, Fernando, Cer¢n, Ana, Fern ndez-Malvido, Beatriz, Gonz lez-Touya, Marta, Jos‚, Antonio San, Botr n, Ana, Iglesis, Vanessa, and D¡az-G¢mez, B rbara

Subjects
DEMENTIA, COGNITION disorders, PUBLIC health
Abstract

Background: This article describes the rationale and design of a population-based survey of dementia in Valladolid northwestern Spain). The main aim of the study was to assess the epidemiology of dementia and its subtypes. Prevalence of anosognosia in dementia patients, nutritional status, diet characteristics, and determinants of non-diagnosed dementia in the community were studied. The main socio demographic, educational, and general health status characteristics of the study population are described. Methods: Cross-over and cohort, population-based study. A two-phase door-to-door study was performed. Both urban and rural environments were included. In phase 1 (February 2009 - February 2010) 28 trained physicians examined a population of 2,989 subjects (age: ≥ 65 years). The seven-minute screen neurocognitive battery was used. In phase 2 (May 2009 - May 2010) 4 neurologists, 1 geriatrician, and 3 neuropsychologists confirmed the diagnosis of dementia and subtype in patients screened positive by a structured neurological evaluation. Specific instruments to assess anosognosia, the nutritional status and diet characteristics were used. Of the initial sample,2,170 subjects were evaluated (57% female, mean age 76.5 ± 7.8, 5.2% institutionalized), whose characteristics are described. 227 persons were excluded for various reasons. Among those eligible were 592 non-responders. The attrition bias of non-responders was lower in rural areas. 241 screened positive (11.1%).Discussion: The survey will explore some clinical, social and health related life-style variables of dementia. The population size and the diversification of social and educational backgrounds will contribute to a better knowledge of dementia in our environment. [ABSTRACT FROM AUTHOR]

Published
2012
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28. X-ray diffraction and photoluminescence studies of zinc oxide films grown on silicon substrates by dc reactive magnetron sputtering

Author

Ju?rez-D?az, G., Solache-Carranco, H., R., G. Romero-Paredes, Pe?a-Sierra, R., Mart?nez-Ju?rez, J., Galeazzi, R., Esparza-Garc?a, A., Brise?o-Garc?a, M., and Henao, J. A.

Abstract

Thin polycrystalline ZnO films were grown on silicon substrates by dc reactive magnetron sputtering using zinc oxide targets. The quality of the ZnO layers was assessed by X-ray diffraction (XRD), atomic force microscopy, Raman scattering, and photoluminescence measurements. The XRD studies and Raman studies revealed that the ZnO films crystallize in the wurtzite structure. Room temperature photoluminescence spectra consisted of a narrow near-band-edge ultraviolet band and a broad defect-related green band with peak positions at 380 and 516 nm, respectively. The main goal of the work was to define the growth conditions to prepare zinc oxide films with adequate properties to be used in electroluminescent devices. The films exhibited the best surface appearance with a 40:1 argon/oxygen flow rate, a total pressure of 1.5?10?3mbar, and a substrate temperature of 230 ?C. The structural and luminescence properties improved noticeably with the thermal annealing processes at 800 ?C for 1 h.

Published
2008
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