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56 results on '"Garvey, G. T."'

1. MiniBooNE and MicroBooNE Joint Fit to a 3+1 Sterile Neutrino Scenario

Author: Aguilar-Arevalo, A. A., Brown, B. C., Conrad, J. M., Dharmapalan, R., Diaz, A., Djurcic, Z., Finley, D. A., Ford, R., Garvey, G. T., Gollapinni, S., Hourlier, A., Huang, E.C., Kamp, N. W., Karagiorgi, G., Katori, T., Kobilarcik, T., Lin, K., Louis, W. C., Mariani, C., Marsh, W., Mills, G. B., Mirabal-Martinez, J., Moore, C. D., Nelson, R. H., Nowak, J., Pavlovic, Z., Ray, H., Roe, B. P., Russell, A. D., Schneider, A., Shaevitz, M. H., Spitz, J., Stancu, I., Tayloe, R., Thornton, R. T., Tzanov, M., Van de Water, R. G., White, D. H., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: This letter presents the results from the MiniBooNE experiment within a full "3+1" scenario where one sterile neutrino is introduced to the three-active-neutrino picture. In addition to electron-neutrino appearance at short-baselines, this scenario also allows for disappearance of the muon-neutrino and electron-neutrino fluxes in the Booster Neutrino Beam, which is shared by the MicroBooNE experiment. We present the 3+1 fit to the MiniBooNE electron-(anti)neutrino and muon-(anti)neutrino data alone, and in combination with MicroBooNE electron-neutrino data. The best-fit parameters of the combined fit with the exclusive CCQE analysis (inclusive analysis) are $\Delta m^2 = 0.29 eV^2 (0.33 eV^2)$, $|U_{e4}|^2 = 0.016 (0.500)$, $|U_{\mu 4}|^2 = 0.500 (0.500)$, and $\sin^2(2\theta_{\mu e})=0.0316 (1.0)$. Comparing the no-oscillation scenario to the 3+1 model, the data prefer the 3+1 model with a $\Delta \chi^2/\text{dof} = 24.7 / 3 (17.3 / 3)$, a $4.3\sigma (3.4\sigma)$ preference assuming the asymptotic approximation given by Wilks' theorem., Comment: 10 pages, 4 figures, 2 table
Published: 2022

2. MiniBooNE Data Releases

Author: Aguilar-Arevalo, A. A., Brown, B. C., Conrad, J. M., Dharmapalan, R., Diaz, A., Djurcic, Z., Finley, D. A., Ford, R., Garvey, G. T., Gollapinni, S., Hourlier, A., Huang, E. -C., Kamp, N. W., Karagiorgi, G., Katori, T., Kobilarcik, T., Lin, K., Louis, W. C., Mariani, C., Marsh, W., Mills, G. B., Mirabal-Martinez, J., Moore, C. D., Nelson, R. H., Nowak, J., Parmaksiz, I., Pavlovic, Z., Ray, H., Roe, B. P., Russel, A. D., Schneider, A., Shaevitz, M. H., Siegel, H., Spitz, J., Stancu, I., Tayloe, R., Thornton, R. T., Tzanov, M., Van de Water, R. G., White, D. H., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: The MiniBooNE experiment has provided data releases for most publications. Occasionally it is necessary to move data release pages. This document provides a single point of reference that will be updated by the collaboration to point to the present location of the MiniBooNE data releases., 2 pages, 0 figures
Published: 2021

3. Updated MiniBooNE neutrino oscillation results with increased data and new background studies

Author: MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Brown, B. C., Conrad, J. M., Dharmapalan, R., Diaz, A., Djurcic, Z., Finley, D. A., Ford, R., Garvey, G. T., Gollapinni, S., Hourlier, A., Huang, E. C., Kamp, N. W., Karagiorgi, G., Katori, T., Kobilarcik, T., Lin, K., Louis, W. C., Mariani, C., Marsh, W., Mills, G. B., Mirabal-Martinez, J., Moore, C. D., Nelson, R. H., Nowak, J., Parmaksiz, I., Pavlovic, Z., Ray, H., Roe, B. P., Russell, A. D., Schneider, A., Shaevitz, M. H., Siegel, H., Spitz, J., Stancu, I., Tayloe, R., Thornton, R. T., Tzanov, M., Van de Water, R. G., White, D. H., and Zimmerman, E. D.
Subjects: Physics, Particle physics, Photon, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, MiniBooNE, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment (nucl-ex), 010306 general physics, Neutrino oscillation, Event (particle physics), Nuclear Experiment, Lepton
Abstract: The MiniBooNE experiment at Fermilab reports a total excess of $638.0 \pm 132.8$ electron-like events ($4.8 \sigma$) from a data sample corresponding to $18.75 \times 10^{20}$ protons-on-target in neutrino mode, which is a 46\% increase in the data sample with respect to previously published results, and $11.27 \times 10^{20}$ protons-on-target in antineutrino mode. The additional statistics allow several studies to address questions on the source of the excess. First, we provide two-dimensional plots in visible energy and cosine of the angle of the outgoing lepton, which can provide valuable input to models for the event excess. Second, we test whether the excess may arise from photons that enter the detector from external events or photons exiting the detector from $\pi^0$ decays in two model independent ways. Beam timing information shows that almost all of the excess is in time with neutrinos that interact in the detector. The radius distribution shows that the excess is distributed throughout the volume, while tighter cuts on the fiducal volume increase the significance of the excess. We conclude that models of the event excess based on entering and exiting photons are disfavored., Comment: 28 pages, 26 figures
Published: 2021

4. Design and construction of the MicroBooNE Cosmic Ray Tagger system

Author: MicroBooNE Collaboration, Adams, C., Alrashed, M., An, R., Anthony, J., Asaadi, J., Ashkenazi, A., Auger, M., Balasubramanian, S., Baller, B., Barnes, C., Barr, G., Bass, M., Bay, F., Bhat, A., Bhattacharya, K., Bishai, M., Blake, A., Bolton, T., Camilleri, L., Caratelli, D., Terrazas, I. Caro, Carr, R., Fernandez, R. Castillo, Cavanna, F., Cerati, G., Chen, Y., Church, E., Cianci, D., Cohen, E. O., Collin, G. H., Conrad, J. M., Convery, M., Cooper-Troendle, L., Crespo-Anadon, J. I., Del Tutto, M., Devitt, D., Diaz, A., Duffy, K., Dytman, S., Eberly, B., Ereditato, A., Sanchez, L. Escudero, Esquivel, J., Evans, J. J., Fadeeva, A. A., Fitzpatrick, R. S., Fleming, B. T., Franco, D., Furmanski, A. P., Garcia-Gamez, D., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Goodwin, O., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Guzowski, P., Hackenburg, A., Hamilton, P., Hen, O., Hewes, V, Hill, C., Horton-Smith, G. A., Hourlier, A., Huang, E. -C., James, C., de Vries, J. Jan, Jiang, L., Johnson, R. A., Joshi, J., Jostlein, H., Jwa, Y. -J., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Lepetic, I., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Marcocci, S., Mariani, C., Marshall, J., Martin-Albo, J., Caicedo, D. A. Martinez, Mastbaum, A., Meddage, V., Mettler, T., Mills, G. B., Mistry, K., Mogan, A., Moon, J., Mooney, M., Moore, C. D., Mousseau, J., Murphy, M., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Pandey, V., Paolone, V., Papadopoulou, A., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Piasetzky, E., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Rafique, A., Rochester, L., Ross-Lonergan, M., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sharankova, R., Sinclair, J., Smith, A., Snider, E. L., Soderberg, M., Soldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Sutton, K., Sword-Fehlberg, S., Szelc, A. M., Tagg, N., Tang, W., Terao, K., Thomson, M., Thornton, R. T., Toups, M., Tsai, Y. -T., Tufanli, S., Usher, T., Van De Pontseele, W., Van de Water, R. G., Viren, B., Weber, M., Wei, H., Wickremasinghe, D. A., Wierman, K., Williams, Z., Wolbers, S., Wongjirad, T., Woodruff, K., Yang, T., Yarbrough, G., Yates, L. E., Zeller, G. P., Zennamo, J., and Zhang, C.
Subjects: Physics, Scintillation, COSMIC cancer database, Time projection chamber, Muon, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Detector, FOS: Physical sciences, Cosmic ray, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Fermilab, Neutrino, Instrumentation, Mathematical Physics
Abstract: © 2019 IOP Publishing Ltd and Sissa Medialab. The MicroBooNE detector utilizes a liquid argon time projection chamber (LArTPC) with an 85 t active mass to study neutrino interactions along the Booster Neutrino Beam (BNB) at Fermilab. With a deployment location near ground level, the detector records many cosmic muon tracks in each beam-related detector trigger that can be misidentified as signals of interest. To reduce these cosmogenic backgrounds, we have designed and constructed a TPC-external Cosmic Ray Tagger (CRT) . This sub-system was developed by the Laboratory for High Energy Physics (LHEP), Albert Einstein center for fundamental physics, University of Bern. The system utilizes plastic scintillation modules to provide precise time and position information for TPC-traversing particles. Successful matching of TPC tracks and CRT data will allow us to reduce cosmogenic background and better characterize the light collection system and LArTPC data using cosmic muons. In this paper we describe the design and installation of the MicroBooNE CRT system and provide an overview of a series of tests done to verify the proper operation of the system and its components during installation, commissioning, and physics data-taking.
Published: 2019

5. Dark matter search in nucleon, pion, and electron channels from a proton beam dump with MiniBooNE

Author: DM Collaboration, Aguilar-Arevalo, A. A., Backfish, M., Bashyal, A., Batell, B., Brown, B. C., Carr, R., Chatterjee, A., Cooper, R. L., deNiverville, P., Dharmapalan, R., Djurcic, Z., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Green, J. A., Huang, E. -C., Huelsnitz, W., Astiz, I. L. de Icaza, Karagiorgi, G., Katori, T., Ketchum, W., Kobilarcik, T., Liu, Q., Louis, W. C., Marsh, W., Moore, C. D., Mills, G. B., Mirabal, J., Nienaber, P., Pavlovic, Z., Perevalov, D., Ray, H., Roe, B. P., Shaevitz, M. H., Shahsavarani, S., Stancu, I., Tayloe, R., Taylor, C., Thornton, R. T., Van de Water, R. G., Wester, W., White, D. H., and Yu, J.
Subjects: Elastic scattering, Physics, 010308 nuclear & particles physics, Dark matter, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, law.invention, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Pion, High Energy Physics - Phenomenology (hep-ph), law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Beam dump, Neutrino, 010306 general physics, Neutrino oscillation
Abstract: A search for sub-GeV dark matter produced from collisions of the Fermilab 8 GeV Booster protons with a steel beam dump was performed by the MiniBooNE-DM Collaboration using data from $1.86 \times 10^{20}$ protons on target in a dedicated run. The MiniBooNE detector, consisting of 818 tons of mineral oil and located 490 meters downstream of the beam dump, is sensitive to a variety of dark matter initiated scattering reactions. Three dark matter interactions are considered for this analysis: elastic scattering off nucleons, inelastic neutral pion production, and elastic scattering off electrons. Multiple data sets were used to constrain flux and systematic errors, and time-of-flight information was employed to increase sensitivity to higher dark matter masses. No excess from the background predictions was observed, and 90$\%$ confidence level limits were set on the vector portal and leptophobic dark matter models. New parameter space is excluded in the vector portal dark matter model with a dark matter mass between 5 and 50$\,\mathrm{MeV}\,c^{-2}$. The reduced neutrino flux allowed to test if the MiniBooNE neutrino excess scales with the production of neutrinos. No excess of neutrino oscillation events were measured ruling out models that scale solely by number of protons on target independent of beam configuration at 4.6$\sigma$., Comment: 19 pages, 25 figures, Data release: http://www-boone.fnal.gov/for_physicists/data_release/dark_matter_prd/ v2 Updated to published version
Published: 2018

6. Michel electron reconstruction using cosmic-ray data from the MicroBooNE LArTPC

Author: MicroBooNE Collaboration, Acciarri, R., Adams, C., An, R., Anthony, J., Asaadi, J., Auger, M., Bagby, L., Balasubramanian, S., Baller, B., Barnes, C., Barr, G., Bass, M., Bay, F., Bishai, M., Blake, A., Bolton, T., Bugel, L., Camilleri, L., Caratelli, D., Carls, B., Fernandez, R. Castillo, Cavanna, F., Chen, H., Church, E., Cianci, D., Cohen, E., Collin, G. H., Conrad, J. M., Convery, M., Crespo-Anadon, J. I., Del Tutto, M., Devitt, D., Dytman, S., Eberly, B., Ereditato, A., Sanchez, L. Escudero, Esquivel, J., Fleming, B. T., Foreman, W., Furmanski, A. P., Garcia-Gamez, D., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Graf, N., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Hackenburg, A., Hamilton, P., Hen, O., Hewes, V, Hill, C., Ho, J., Horton-Smith, G., Huang, E. -C., James, C., de Vries, J. Jan, Jen, C. -M., Jiang, L., Johnson, R. A., Joshi, J., Jostlein, H., Kaleko, D., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Laube, A., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Mariani, C., Marshall, J., Caicedo, D. A. Martinez, Meddage, V., Miceli, T., Mills, G. B., Moon, J., Mooney, M., Moore, C. D., Mousseau, J., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Paolone, V., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Piasetzky, E., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Rafique, A., Rochester, L., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sinclair, J., Snider, E. L., Soderberg, M., Soldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Sutton, K. A., Szelc, A. M., Tagg, N., Terao, K., Thomson, M., Toups, M., Tsai, Y. -T., Tufanli, S., Usher, T., Van de Water, R. G., Viren, B., Weber, M., Wickremasinghe, D. A., Wolbers, S., Wongjirad, T., Woodruff, K., Yang, T., Yates, L., Zeller, G. P., Zennamo, J., Zhang, C., Moon, Jarrett S., Conrad, Janet Marie, Hen, Or, and Yates, Lauren Elizabeth
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Time projection chambers, FOS: Physical sciences, Cosmic ray, Electron, Neutrino detectors, Noble liquid detectors (scintillation, ionization, double-phase), Performance of High Energy Physics Detectors, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Noble liquid detectors (scintillation, Ionization, ionization, 0103 physical sciences, Fermilab, 010306 general physics, Instrumentation, Mathematical Physics, Physics, Range (particle radiation), Time projection chamber, Muon, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), double-phase), High Energy Physics::Experiment, Neutrino
Abstract: The MicroBooNE liquid argon time projection chamber (LArTPC) has been taking data at Fermilab since 2015 collecting, in addition to neutrino beam, cosmic-ray muons. Results are presented on the reconstruction of Michel electrons produced by the decay at rest of cosmic-ray muons. Michel electrons are abundantly produced in the TPC, and given their well known energy spectrum can be used to study MicroBooNE's detector response to low-energy electrons (electrons with energies up to ∼ 50 MeV). We describe the fully-automated algorithm developed to reconstruct Michel electrons, with which a sample of ∼ 14,000 Michel electron candidates is obtained. Most of this article is dedicated to studying the impact of radiative photons produced by Michel electrons on the accuracy and resolution of their energy measurement. In this energy range, ionization and bremsstrahlung photon production contribute similarly to electron energy loss in argon, leading to a complex electron topology in the TPC. By profiling the performance of the reconstruction algorithm on simulation we show that the ability to identify and include energy deposited by radiative photons leads to a significant improvement in the energy measurement of low-energy electrons. The fractional energy resolution we measure improves from over 30% to ∼ 20% when we attempt to include radiative photons in the reconstruction. These studies are relevant to a large number of analyses which aim to study neutrinos by measuring electrons produced by ν e interactions over a broad energy range. Keywords: Michel electrons, LArTPC, MicroBooNE
Published: 2018

7. Comparison of νμ-Ar multiplicity distributions observed by MicroBooNE to GENIE model predictions

Author: Adams, C., An, R., Anthony, J., Asaadi, J., Auger, M., Balasubramanian, S., Baller, B., Barnes, C., Barr, G., Bass, M., Bay, F., Bhat, A., Bhattacharya, K., Bishai, M., Blake, A., Bolton, T., Camilleri, L., Caratelli, D., Fernandez, R. Castillo, Cavanna, F., Cerati, G., Chen, H., Chen, Y., Church, E., Cianci, D., Cohen, E., Collin, G. H., Conrad, J. M., Convery, M., Cooper-Troendle, L., Crespo-Anadon, J. I., Del Tutto, M., Devitt, D., Diaz, A., Dytman, S., Eberly, B., Ereditato, A., Sanchez, L. Escudero, Esquivel, J., Evans, J. J, Fadeeva, A. A., Fleming, B. T., Foreman, W., Furmanski, A. P., Garcia-Gamez, D., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Guzowski, P., Hackenburg, A., Hamilton, P., Hen, O., Hewes, V, Hill, C., Ho, J., Horton-Smith, G. A., Hourlier, A., Huang, E. -C., James, C., de Vries, J. Jan, Jiang, L., Johnson, R. A., Joshi, J., Jostlein, H., Jwa, Y. -J., Kaleko, D., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Marcocci, S., Mariani, C., Marshall, J., Caicedo, D. A. Martinez, Mastbaum, A., Meddage, V., Mettler, T., Miceli, T., Mills, G. B., Mogan, A., Moon, J., Mooney, M., Moore, C. D., Mousseau, J., Murphy, M., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Pandey, V., Paolone, V., Papadopoulou, A., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Piasetzky, E., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Rafique, A., Rochester, L., Ross-Lonergan, M., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sinclair, J., Smith, A., Snider, E. L., Soderberg, M., Soldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Sutton, K., Sword-Fehlberg, S., Szelc, A. M., Tagg, N., Tang, W., Terao, K., Thomson, M., Toups, M., Tsai, Y. -T., Tufanli, S., Usher, T., Van De Pontseele, W., Van de Water, R. G., Viren, B., Weber, M., Wei, H., Wickremasinghe, D. A., Wierman, K., Williams, Z., Wolbers, S., Wongjirad, T., Woodruff, K., Yang, T., Yarbrough, G., Yates, L. E., Zeller, G. P., Zennamo, J., and Zhang, C.
Subjects: High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Physics::Accelerator Physics, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det)
Abstract: We measure a large set of observables in inclusive charged current muon neutrino scattering on argon with the MicroBooNE liquid argon time projection chamber operating at Fermilab. We evaluate three neutrino interaction models based on the widely used GENIE event generator using these observables. The measurement uses a data set consisting of neutrino interactions with a final state muon candidate fully contained within the MicroBooNE detector. These data were collected in 2016 with the Fermilab Booster Neutrino Beam, which has an average neutrino energy of 800 MeV, using an exposure corresponding to 5E19 protons-on-target. The analysis employs fully automatic event selection and charged particle track reconstruction and uses a data-driven technique to separate neutrino interactions from cosmic ray background events. We find that GENIE models consistently describe the shapes of a large number of kinematic distributions for fixed observed multiplicity., 31 pages, 39 figures, 10 tables
Published: 2018
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8. The Pandora multi-algorithm approach to automated pattern recognition of cosmic-ray muon and neutrino events in the MicroBooNE detector

Author: MicroBooNE Collaboration, Acciarri, R., Adams, C., An, R., Anthony, J., Asaadi, J., Auger, M., Bagby, L., Balasubramanian, S., Baller, B., Barnes, C., Barr, G., Bass, M., Bay, F., Bishai, M., Blake, A., Bolton, T., Camilleri, L., Caratelli, D., Carls, B., Fernandez, R. Castillo, Cavanna, F., Chen, H., Church, E., Cianci, D., Cohen, E., Collin, G. H., Conrad, J. M., Convery, M., Crespo-Anadon, J. I., Del Tutto, M., Devitt, D., Dytman, S., Eberly, B., Ereditato, A., Sanchez, L. Escudero, Esquivel, J., Fadeeva, A. A., Fleming, B. T., Foreman, W., Furmanski, A. P., Garcia-Gomez, D., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Graf, N., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Hackenburg, A., Hamilton, P., Hen, O., Hewes, V, Hill, C., Ho, J., Horton-Smith, G., Hourlier, A., Huang, E. -C., James, C., de Vries, J. Jan, Jen, C. -M., Jiang, L., Johnson, R. A., Joshi, J., Jostlein, H., Kaleko, D., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Laube, A., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Mariani, C., Marshall, J., Caicedo, D. A. Martinez, Meddage, V., Miceli, T., Mills, G. B., Moon, J., Mooney, M., Moore, C. D., Mousseau, J., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Paolone, V., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Piasetzky, E., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Rafique, A., Rochester, L., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sinclair, J., Smith, A., Snider, E. L., Soderberg, M., Soldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Szelc, A. M., Tagg, N., Terao, K., Thomson, M., Toups, M., Tsai, Y. -T., Tufanli, S., Usher, T., Van De Pontseele, W., Van de Water, R. G., Viren, B., Weber, M., Wickremasinghe, D. A., Wolbers, S., Wongjirad, T., Woodruff, K., Yang, T., Yates, L., Zeller, G. P., Zennamo, J., and Zhang, C.
Subjects: High Energy Physics - Experiment (hep-ex), Physics - Data Analysis, Statistics and Probability, FOS: Physical sciences, Data Analysis, Statistics and Probability (physics.data-an), High Energy Physics - Experiment
Abstract: The development and operation of Liquid-Argon Time-Projection Chambers for neutrino physics has created a need for new approaches to pattern recognition in order to fully exploit the imaging capabilities offered by this technology. Whereas the human brain can excel at identifying features in the recorded events, it is a significant challenge to develop an automated, algorithmic solution. The Pandora Software Development Kit provides functionality to aid the design and implementation of pattern-recognition algorithms. It promotes the use of a multi-algorithm approach to pattern recognition, in which individual algorithms each address a specific task in a particular topology. Many tens of algorithms then carefully build up a picture of the event and, together, provide a robust automated pattern-recognition solution. This paper describes details of the chain of over one hundred Pandora algorithms and tools used to reconstruct cosmic-ray muon and neutrino events in the MicroBooNE detector. Metrics that assess the current pattern-recognition performance are presented for simulated MicroBooNE events, using a selection of final-state event topologies., Preprint to be submitted to The European Physical Journal C
Published: 2017

9. Noise Characterization and Filtering in the MicroBooNE Liquid Argon TPC

Author: MicroBooNE Collaboration, Acciarri, R., Adams, C., An, R., Anthony, J., Asaadi, J., Auger, M., Bagby, L., Balasubramanian, S., Baller, B., Barnes, C., Barr, G., Bass, M., Bay, F., Bishai, M., Blake, A., Bolton, T., Bullard, B., Camilleri, L., Caratelli, D., Carls, B., Fernandez, R. Castillo, Cavanna, F., Chen, H., Church, E., Cianci, D., Cohen, E., Convery, M., Crespo-Anadón, J. I., Geronimo, G. De, Del Tutto, M., Devitt, D., Dytman, S., Eberly, B., Ereditato, A., Escudero Sanchez, L., Esquivel, J., Fadeeva, A. A., Fleming, B. T., Foreman, W., Furmanski, A. P., Garcia-Gamez, D., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Graf, N., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Hackenburg, A., Hamilton, P., Hewes, J., Hill, C., Ho, J., Horton-Smith, G., Hourlier, A., Huang, E.-C., James, C., Jan de Vries, J., Jen, C.-M., Jiang, L., Johnson, R. A., Joshi, J., Jostlein, H., Kaleko, D., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Laube, A., Li, S., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Mariani, C., Marshall, J., Martinez Caicedo, D. A., Meddage, V., Miceli, T., Mills, G. B., Mooney, M., Moore, C. D., Mousseau, J., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Paolone, V., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Piasetzky, E., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Radeka, V., Rafique, A., Rescia, S., Rochester, L., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sinclair, J., Smith, A., Snider, E. L., Soderberg, M., Söldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Szelc, A. M., Tagg, N., Terao, K., Thomson, M., Thorn, C., Toups, M., Tsai, Y.-T., Tufanli, S., Usher, T., Van De Pontseele, W., Van de Water, R.G., Viren, B., Weber, M., Wickremasinghe, D. A., Wolbers, S., Woodruff, K., Yang, T., Yates, L., Yu, B., Zeller, G. P., Zennamo, J., Zhang, C., Collin, G. H., Conrad, Janet Marie, Hen, Or, Moon, Jarrett S., Wongjirad, Taritree, Massachusetts Institute of Technology. Department of Physics, Collin, G. H., Conrad, Janet Marie, Hen, Or, Moon, Jarrett S., and Wongjirad, Taritree
Subjects: Cryostat, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, 01 natural sciences, Signal, Noise (electronics), Front-end electronics for detector readout, Neutrino detectors, Noble liquid detectors (scintillation, ionization, double-phase), Time projection Chambers (TPC), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Optics, Noble liquid detectors (scintillation, Ionization, ionization, 0103 physical sciences, Waveform, 010306 general physics, Instrumentation, Mathematical Physics, Physics, Time projection chamber, 010308 nuclear & particles physics, business.industry, Detector, Sense (electronics), Instrumentation and Detectors (physics.ins-det), double-phase), business
Abstract: The low-noise operation of readout electronics in a liquid argon time projection chamber (LArTPC) is critical to properly extract the distribution of ionization charge deposited on the wire planes of the TPC, especially for the induction planes. This paper describes the characteristics and mitigation of the observed noise in the MicroBooNE detector. The MicroBooNE's single-phase LArTPC comprises two induction planes and one collection sense wire plane with a total of 8256 wires. Current induced on each TPC wire is amplified and shaped by custom low-power, low-noise ASICs immersed in the liquid argon. The digitization of the signal waveform occurs outside the cryostat. Using data from the first year of MicroBooNE operations, several excess noise sources in the TPC were identified and mitigated. The residual equivalent noise charge (ENC) after noise filtering varies with wire length and is found to be below 400 electrons for the longest wires (4.7 m). The response is consistent with the cold electronics design expectations and is found to be stable with time and uniform over the functioning channels. This noise level is significantly lower than previous experiments utilizing warm front-end electronics., Comment: 36 pages, 20 figures
Published: 2017

10. Convolutional neural networks applied to neutrino events in a liquid argon time projection chamber

Author: MicroBooNE Collaboration, Acciarri, R., Adams, C., An, R., Asaadi, J., Auger, M., Bagby, L., Baller, B., Barr, G., Bass, M., Bay, F., Bishai, M., Blake, A., Bolton, T., Bugel, L., Camilleri, L., Caratelli, D., Carls, B., Fernandez, R. Castillo, Cavanna, F., Chen, H., Church, E., Cianci, D., Collin, G. H., Conrad, J. M., Convery, M., Crespo-Anadón, J. I., Del Tutto, M., Devitt, D., Dytman, S., Eberly, B., Ereditato, A., Sanchez, L. Escudero, Esquivel, J., Fleming, B. T., Foreman, W., Furmanski, A. P., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Graf, N., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Hackenburg, A., Hamilton, P., Hen, O., Hewes, V, Hill, C., Ho, J., Horton-Smith, G., James, C., de Vries, J. Jan, Jen, C. -M., Jiang, L., Johnson, R. A., Jones, B. J. P., Joshi, J., Jostlein, H., Kaleko, D., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Laube, A., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Mariani, C., Marshall, J., Caicedo, D. A. Martinez, Meddage, V., Miceli, T., Mills, G. B., Moon, J., Mooney, M., Moore, C. D., Mousseau, J., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Paolone, V., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Rafique, A., Rochester, L., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sinclair, J., Snider, E. L., Soderberg, M., Söldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Szelc, A. M., Tagg, N., Terao, K., Thomson, M., Toups, M., Tsai, Y. -T., Tufanli, S., Usher, T., Van de Water, R. G., Viren, B., Weber, M., Weston, J., Wickremasinghe, D. A., Wolbers, S., Wongjirad, T., Woodruff, K., Yang, T., Zeller, G. P., Zennamo, J., Zhang, C., Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Bugel, Leonard G., Conrad, Janet Marie, Hen, Or, Jones, Benjamin James Poyner, and Wongjirad, Taritree
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Time projection chambers, FOS: Physical sciences, Cosmic ray, 01 natural sciences, Convolutional neural network, Particle identification, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle identification methods, 0103 physical sciences, 010306 general physics, Instrumentation, Mathematical Physics, Physics, Time projection chamber, 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), Computational physics, Image filtering, Particle, Analysis and statistical methods, Neutrino, Event (particle physics)
Abstract: We present several studies of convolutional neural networks applied to data coming from the MicroBooNE detector, a liquid argon time projection chamber (LArTPC). The algorithms studied include the classification of single particle images, the localization of single particle and neutrino interactions in an image, and the detection of a simulated neutrino event overlaid with cosmic ray backgrounds taken from real detector data. These studies demonstrate the potential of convolutional neural networks for particle identification or event detection on simulated neutrino interactions. We also address technical issues that arise when applying this technique to data from a large LArTPC at or near ground level.
Published: 2017

11. Measurement of cosmic-ray reconstruction efficiencies in the MicroBooNE LArTPC using a small external cosmic-ray counter

Author: MicroBooNE Collaboration, Acciarri, R., Adams, C., An, R., Anthony, J., Asaadi, J., Auger, M., Bagby, L., Balasubramanian, S., Baller, B., Barnes, C., Barr, G., Bass, M., Bay, F., Bishai, M., Blake, A., Bolton, T., Camilleri, L., Caratelli, D., Carls, B., Fernandez, R. Castillo, Cavanna, F., Chen, H., Church, E., Cianci, D., Cohen, E., Collin, G. H., Conrad, J. M., Convery, M., Crespo-Anadon, J. I., Del Tutto, M., Devitt, D., Dytman, S., Eberly, B., Ereditato, A., Sanchez, L. Escudero, Esquivel, J., Fadeeva, A. A., Fleming, B. T., Foreman, W., Furmanski, A. P., Garcia-Gamez, D., Garvey, G. T., Genty, V., Goeldi, D., Gollapinni, S., Graf, N., Gramellini, E., Greenlee, H., Grosso, R., Guenette, R., Hackenburg, A., Hamilton, P., Hen, O., Hewes, V, Hill, C., Ho, J., Horton-Smith, G., Hourlier, A., Huang, E. -C., James, C., de Vries, J. Jan, Jen, C. -M., Jiang, L., Johnson, R. A., Joshi, J., Jostlein, H., Kaleko, D., Kalousis, L. N., Karagiorgi, G., Ketchum, W., Kirby, B., Kirby, M., Kobilarcik, T., Kreslo, I., Lange, G., Laube, A., Li, Y., Lister, A., Littlejohn, B. R., Lockwitz, S., Lorca, D., Louis, W. C., Luethi, M., Lundberg, B., Luo, X., Marchionni, A., Mariani, C., Marshall, J., Caicedo, D. A. Martinez, Meddage, V., Miceli, T., Mills, G. B., Moon, J., Mooney, M., Moore, C. D., Mousseau, J., Murrells, R., Naples, D., Nienaber, P., Nowak, J., Palamara, O., Paolone, V., Papavassiliou, V., Pate, S. F., Pavlovic, Z., Pelkey, R., Piasetzky, E., Porzio, D., Pulliam, G., Qian, X., Raaf, J. L., Rafique, A., Rochester, L., von Rohr, C. Rudolf, Russell, B., Schmitz, D. W., Schukraft, A., Seligman, W., Shaevitz, M. H., Sinclair, J., Smith, A., Snider, E. L., Soderberg, M., Soldner-Rembold, S., Soleti, S. R., Spentzouris, P., Spitz, J., John, J. St., Strauss, T., Szelc, A. M., Tagg, N., Terao, K., Thomson, M., Toups, M., Tsai, Y. -T., Tufanli, S., Usher, T., Van De Pontseele, W., Van de Water, R. G., Viren, B., Weber, M., Wickremasinghe, D. A., Wolbers, S., Wongjirad, T., Woodruff, K., Yang, T., Yates, L., Zeller, G. P., Zennamo, J., and Zhang, C.
Subjects: Particle physics, Physics::Instrumentation and Detectors, Time projection chambers, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Data reduction methods, Neutrino detectors, Performance of High Energy Physics Detectors, FOS: Physical sciences, Cosmic ray, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Stack (abstract data type), 0103 physical sciences, Fermilab, 010306 general physics, Neutrino oscillation, Instrumentation, Mathematical Physics, Physics, Muon, Time projection chamber, 010308 nuclear & particles physics, Detector, High Energy Physics::Experiment
Abstract: The MicroBooNE detector is a liquid argon time projection chamber at Fermilab designed to study short-baseline neutrino oscillations and neutrino-argon interaction cross-section. Due to its location near the surface, a good understanding of cosmic muons as a source of backgrounds is of fundamental importance for the experiment. We present a method of using an external 0.5 m (L) x 0.5 m (W) muon counter stack, installed above the main detector, to determine the cosmic-ray reconstruction efficiency in MicroBooNE. Data are acquired with this external muon counter stack placed in three different positions, corresponding to cosmic rays intersecting different parts of the detector. The data reconstruction efficiency of tracks in the detector is found to be $\epsilon_{\mathrm{data}}=(97.1\pm0.1~(\mathrm{stat}) \pm 1.4~(\mathrm{sys}))\%$, in good agreement with the Monte Carlo reconstruction efficiency $\epsilon_{\mathrm{MC}} = (97.4\pm0.1)\%$. This analysis represents a small-scale demonstration of the method that can be used with future data coming from a recently installed cosmic-ray tagger system, which will be able to tag $\approx80\%$ of the cosmic rays passing through the MicroBooNE detector., Comment: 19 pages, 12 figures
Published: 2017

12. Status Report for the 21th J-PARC PAC : Searching for a Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2)

Author: Harada, M., Hasegawa, S., Kasugai, Y., Meigo, S., Sakai, K., Sakamoto, S., Suzuya, K., Iwai, E., Maruyama, T., Monjushiro, S., Nishikawa, K., Taira, M., Niiyama, M., Ajimura, S., Hiraiwa, T., Nakano, T., Nomachi, M., Shima, T., Bezerra, T. J. C., Chauveau, E., Furuta, H., Suekane, F., Stancu, I., Yeh, M., Toki, W., Ray, H., Garvey, G. T., Mauger, C., Louis, W. C., Mills, G. B., Water, R., and Joshua Spitz
Subjects: High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract: The JSNS2 (J-PARC E56) experiment aims to search for sterile neutrinos at the J-PARC Materials and Life Sciences Experimental Facility (MLF).After the submission of a proposal to the J-PARC PAC, stage-1 approval was granted to the JSNS2 experiment. The approval followed a series of background measurements which were performed in 2014. Subsequent for stage-1 approval, the JSNS2 collaboration has made continuous efforts to write a Technical Design Report (TDR).This TDR will include two major items as discussed in the previous status report for the 20th J-PARC PAC: (1) A realistic detector location (2) Well understood and realistic detector performance using simulation studies, primarily in consideration of fast neutron rejection. Since August we have been in discussions with MLF staff regarding an appropriate detector location. We are also in the process of setting up a Monte Carlo (MC) simulation framework in order to study detector's performance in realistic conditions. In addition, we have pursued hardware R&D work for the liquid scintillator (LS) and to improve the dynamic range of the 10" photomultiplier tubes (PMTs). The LS R&D works includes Cherenkov studies inside the LS, and a Pulse Shape Discrimination (PSD) study with a test-beam, performed at Tohoku University. We also estimate the PSD performance of a full-sized detector using a detailed MC simulation. In this status report, we describe progress on this work.
Published: 2016

13. Status Report for the 20th J-PARC PAC : A Search for Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2)

Author: Harada, M., Hasegawa, S., Kasugai, Y., Meigo, S., Sakai, K., Sakamoto, S., Suzuya, K., Iwai, E., Maruyama, T., Monjushiro, S., Nishikawa, K., Taira, M., Niiyama, M., Ajimura, S., Hiraiwa, T., Nakano, T., Nomachi, M., Shima, T., Bezerra, T. J. C., Chauveau, E., Furuta, H., Suekane, F., Stancu, I., Yeh, M., Ray, H., Garvey, G. T., Mauger, C., Louis, W. C., Mills, G. B., Water, R., and Joshua Spitz
Subjects: High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Physics::Accelerator Physics, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract: On April 2015, the J-PARC E56 (JSNS2: J-PARC Sterile Neutrino Search using neutrinos from J-PARC Spallation Neutron Source) experiment officially obtained stage-1 approval from J-PARC. We have since started to perform liquid scintillator R&D for improving energy resolution and fast neutron rejection. Also, we are studying Avalanche Photo-Diodes (SiPM) inside the liquid scintillator. In addition to the R&D work, a background measurement for the proton beam bunch timing using a small liquid scintillator volume was planned, and the safety discussions for the measurement have been done. This report describes the status of the R&D work and the background measurements, in addition to the milestones required before stage-2 approval., 20th J-PARC PAC status report
Published: 2015

14. Proposal: A Search for Sterile Neutrino at J-PARC Materials and Life Science Experimental Facility

Author: Harada, M., Hasegawa, S., Kasugai, Y., Meigo, S., Sakai, K., Sakamoto, S., Suzuya, K., Iwai, E., Maruyama, T., Nishikawa, K., Ohta, R., Niiyama, M., Ajimura, S., Hiraiwa, T., Nakano, T., Nomachi, M., Shima, T., Bezerra, T. J. C., Chauveau, E., Enomoto, T., Furuta, H., Sakai, H., Suekane, F., Yeh, M., Garvey, G. T., William Louis, Mills, G. B., and Water, R.
Subjects: High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract: We propose a definite search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 3 GeV Rapid Cycling Synchrotron (RCS) and spallation neutron target, an intense neutrino beam from muon decay at rest (DAR) is available. Neutrinos come from \mu+ decay, and the oscillation to be searched for is (anti \nu \mu -> anti \nu e) which is detected by the inverse \beta decay interaction (anti \nu e + p -> e+ + n), followed by a gamma from neutron capture. The unique features of the proposed experiment, compared with the LSND and experiments using horn focused beams, are; (1) The pulsed beam with about 600 ns spill width from J-PARC RCS and muon long lifetime allow us to select neutrinos from \mu DAR only. (2) Due to nuclear absorption of \pi- and \mu-, neutrinos from \mu- decay are suppressed to about the $10^{-3}$ level. (3) Neutrino cross sections are well known. The inverse \beta decay cross section is known to be a few percent accuracy. (4) The neutrino energy can be calculated from positron energy by adding ~1.8 MeV. (5) The anti \nu \mu and \nu e fluxes have different and well defined spectra. This allows us to separate oscillated signals from those due to \mu- decay contamination. We propose to proceed with the oscillation search in steps since the region of \Delta m^2 to be searched can be anywhere between sub-eV^2 to several tens of eV^2. We start to examine the large \Delta m^2 region, which can be done with short baseline at first. At close distance to the MLF target gives a high neutrino flux, and allows us to use relatively small detector. If no definitive positive signal is found, a future option exists to cover small \Delta m^2 region. This needs a relatively long baseline and requires a large detector to compensate for the reduced neutrino flux.
Published: 2013

15. The OscSNS White Paper

Author: OscSNS Collaboration, Allen, R., Avignone, F. T., Boissevain, J., Efremenko, Y., Elnimr, M., Gabriel, T., Garcia, F. G., Garvey, G. T., Handler, T., Huelsnitz, W., Imlay, R., Kamyshkov, Y., Link, J. M., Louis, W. C., Mills, G. B., Mishra, S. R., Osmanov, B., Pavlovic, Z., Ray, H., Roe, B. P., Rosenfeld, C., Stancu, I., Svoboda, R., Tayloe, R., Van de Water, R., Wetstein, M. J., White, D. H., and Yeh, M.
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: There exists a need to address and resolve the growing evidence for short-baseline neutrino oscillations and the possible existence of sterile neutrinos. Such non-standard particles require a mass of $\sim 1$ eV/c$^2$, far above the mass scale associated with active neutrinos, and were first invoked to explain the LSND $\bar \nu_\mu \rightarrow \bar \nu_e$ appearance signal. More recently, the MiniBooNE experiment has reported a $2.8 \sigma$ excess of events in antineutrino mode consistent with neutrino oscillations and with the LSND antineutrino appearance signal. MiniBooNE also observed a $3.4 \sigma$ excess of events in their neutrino mode data. Lower than expected neutrino-induced event rates using calibrated radioactive sources and nuclear reactors can also be explained by the existence of sterile neutrinos. Fits to the world's neutrino and antineutrino data are consistent with sterile neutrinos at this $\sim 1$ eV/c$^2$ mass scale, although there is some tension between measurements from disappearance and appearance experiments. In addition to resolving this potential major extension of the Standard Model, the existence of sterile neutrinos will impact design and planning for all future neutrino experiments. It should be an extremely high priority to conclusively establish if such unexpected light sterile neutrinos exist. The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory, built to usher in a new era in neutron research, provides a unique opportunity for US science to perform a definitive world-class search for sterile neutrinos., Comment: This white paper is submitted as part of the SNOWMASS planning process
Published: 2013

16. Improved Search for $\bar ��_��\rightarrow \bar ��_e$ Oscillations in the MiniBooNE Experiment

Author: The MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Brown, B. C., Bugel, L., Cheng, G., Church, E. D., Conrad, J. M., Dharmapalan, R., Djurcic, Z., Finley, D. A., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Huelsnitz, W., Ignarra, C., Imlay, R., Johnson, R. A., Karagiorgi, G., Katori, T., Kobilarcik, T., Louis, W. C., Mariani, C., Marsh, W., Mills, G. B., Mirabal, J., Moore, C. D., Mousseau, J., Nienaber, P., Osmanov, B., Pavlovic, Z., Perevalov, D., Polly, C. C., Ray, H., Roe, B. P., Russell, A. D., Shaevitz, M. H., Spitz, J., Stancu, I., Tayloe, R., Van de Water, R. G., White, D. H., Wickremasinghe, D. A., Zeller, G. P., and Zimmerman, E. D.
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract: The MiniBooNE experiment at Fermilab reports results from an analysis of $\bar ��_e$ appearance data from $11.27 \times 10^{20}$ protons on target in antineutrino mode, an increase of approximately a factor of two over the previously reported results. An event excess of $78.4 \pm 28.5$ events ($2.8 ��$) is observed in the energy range $200, Submitted to PRL. Further information provided in arXiv:1207.4809
Published: 2013
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17. Low Mass WIMP Searches with a Neutrino Experiment: A Proposal for Further MiniBooNE Running

Author: Aguilar-Arevalo, A. A., Batell, B., Cooper, R., deNiverville, P., Dharmapalan, R., Djurcic, Z., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Habib, S., Huelsnitz, W., Jiang, C., Johnson, R. A., Ketchum, W., Kobilarcik, T., Louis, W. C., Marsh, W., McKeen, D., Mills, G. B., Mirabal, J., Moore, C. D., Nienaber, P., Pavlovic, Z., Perevalov, D., Polly, C. C., Pospelov, M., Ray, H., Ritz, A., Roe, B. P., Stancu, I., Van de Water, R. Tayloe R., and Wickremasinghe, D. A.
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, Cosmology and Nongalactic Astrophysics (astro-ph.CO), High Energy Physics - Phenomenology (hep-ph), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: A proposal submitted to the FNAL PAC is described to search for light sub-GeV WIMP dark matter at MiniBooNE. The possibility to steer the beam past the target and into an absorber leads to a significant reduction in neutrino background, allowing for a sensitive search for elastic scattering of WIMPs off nucleons or electrons in the detector. Dark matter models involving a vector mediator can be probed in a parameter region consistent with the required thermal relic density, and which overlaps the region in which these models can resolve the muon g-2 discrepancy. Estimates of signal significance are presented for various operational modes and parameter points. The experimental approach outlined for applying MiniBooNE to a light WIMP search may also be applicable to other neutrino facilities., 27 pages, 18 figures. Proposal submitted to the FNAL PAC Oct 15 2012
Published: 2012

18. Light Sterile Neutrinos: A White Paper

Author: Abazajian, K. N., Acero, M. A., Agarwalla, S. K., Aguilar-Arevalo, A. A., Albright, C. H., Antusch, S., Arguelles, C. A., Balantekin, A. B., Barenboim, G., Barger, V., Bernardini, P., Bezrukov, F., Bjaelde, O. E., Bogacz, S. A., Bowden, N. S., Boyarsky, A., Bravar, A., Bravo Berguno, D., Brice, S. J., Bross, A. D., Caccianiga, B., Cavanna, F., Chun, E. J., Cleveland, B. T., Collin, A. P., Coloma, P., Conrad, J. M., Cribier, M., Cucoanes, A. S., D Olivo, J. C., Das, Subinoy, Gouvea, A., Derbin, A. V., Dharmapalan, R., Diaz, J. S., Ding, X. J., Djurcic, Z., Donini, A., Duchesneau, D., Ejiri, H., Elliott, S. R., Ernst, D. J., Esmaili, A., Evans, J. J., Fernandez-Martinez, E., Figueroa-Feliciano, E., Fleming, B. T., Formaggio, J. A., Franco, D., Gaffiot, J., Gandhi, R., Gao, Y., Garvey, G. T., Gavrin, V. N., Ghoshal, P., Gibin, D., Giunti, C., Gninenko, S. N., Gorbachev, V. V., Gorbunov, D. S., Guenette, R., Guglielmi, A., Halzen, F., Hamann, J., Hannestad, S., Haxton, W., Heeger, K. M., Henning, R., Hernandez, P., Huber, P., Huelsnitz, W., Ianni, A., Ibragimova, T. V., Karadzhov, Y., Karagiorgi, G., Keefer, G., Kim, Y. D., Kopp, J., Kornoukhov, V. N., Kusenko, A., Kyberd, P., Paul Langacker, Lasserre, Th, Laveder, M., Letourneau, A., Lhuillier, D., Li, Y. F., Lindner, M., Link, J. M., Littlejohn, B. L., Lombardi, P., Long, K., Lopez-Pavon, J., Louis, W. C., Ludhova, L., Lykken, J. D., Machado, P. A. N., Maltoni, M., Mann, W. A., Marfatia, D., Mariani, C., Matveev, V. A., Mavromatos, N. E., Melchiorri, A., Meloni, D., Mena, O., Mention, G., Merle, A., Meroni, E., Mezzetto, M., Mills, G. B., Minic, D., Miramonti, L., Mohapatra, D., Mohapatra, R. N., Montanari, C., Mori, Y., Mueller, Th A., Mumm, H. P., Muratova, V., Nelson, A. E., Nico, J. S., Noah, E., Nowak, J., Smirnov, O. Yu, Obolensky, M., Pakvasa, S., Palamara, O., Pallavicini, M., Pascoli, S., Patrizii, L., Pavlovic, Z., Peres, O. L. G., Pessard, H., Pietropaolo, F., Pitt, M. L., Popovic, M., Pradler, J., Ranucci, G., Ray, H., Razzaque, S., Rebel, B., Robertson, R. G. H., Rodejohann, W., Rountree, S. D., Rubbia, C., Ruchayskiy, O., Sala, P. R., Scholberg, K., Schwetz, T., Shaevitz, M. H., Shaposhnikov, M., Shrock, R., Simone, S., Skorokhvatov, M., Sorel, M., Sousa, A., Spergel, D. N., Spitz, J., Stanco, L., Stancu, I., Suzuki, A., Takeuchi, T., Tamborra, I., Tang, J., Testera, G., Tian, X. C., Tonazzo, A., Tunnell, C. D., Water, R. G., Verde, L., Veretenkin, E. P., Vignoli, C., Vivier, M., Vogelaar, R. B., Wascko, M. O., Wilkerson, J. F., Winter, W., Wong, Y. Y. Y., Yanagida, T. T., Yasuda, O., Yeh, M., Yermia, F., Yokley, Z. W., Zeller, G. P., Zhan, L., Zhang, H., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Center for Neutrino Physics, Physics, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), Nuclear Theory, nucl-th, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], hep-ex, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, hep-ph, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], astro-ph.CO, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Particle Physics - Phenomenology
Abstract: This white paper addresses the hypothesis of light sterile neutrinos based on recent anomalies observed in neutrino experiments and the latest astrophysical data. This white paper addresses the hypothesis of light sterile neutrinos based on recent anomalies observed in neutrino experiments and the latest astrophysical data.
Published: 2012

19. Opportunities for Neutrino Physics at the Spallation Neutron Source: A White Paper

Author: Bolozdynya, A., Flavio Cavanna, Efremenko, Y., Garvey, G. T., Gudkov, V., Hatzikoutelis, A., Hix, W. R., Louis, W. C., Link, J. M., Markoff, D. M., Mills, G. B., Patton, K., Ray, H., Scholberg, K., Water, R. G., Virtue, C., White, D. H., Yen, S., and Yoo, J.
Subjects: High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Physics::Accelerator Physics, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory, Tennessee, provides an intense flux of neutrinos in the few tens-of-MeV range, with a sharply-pulsed timing structure that is beneficial for background rejection. In this document, the product of a workshop at the SNS in May 2012, we describe this free, high-quality stopped-pion neutrino source and outline various physics that could be done using it. We describe without prioritization some specific experimental configurations that could address these physics topics., Comment: White paper associated with the Workshop on Neutrinos at the Spallation Neutron Source, May 2012
Published: 2012
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20. Letter of Intent: A new investigation of numu to nue oscillations with improved sensitivity in an enhanced MiniBooNE experiment

Author: Aguilar-Arevalo, A. A., Brown, B. C., Bugel, L., Cooper, R., Conrad, J. M., Dharmapalan, R., Ford, R., Djurcic, Z., Garcia, F. G., Garvey, G. T., Grange, J., Habib, S., Huelsnitz, W., Imlay, R., Jiang, C., Karagiorgi, G., Louis, W. C., Johnson, R. A., Marsh, W., Mauger, C., Mills, G. B., Moore, C. D., Mousseau, J., Nienaber, P., Osmanov, B., Pavlovic, Z., Perevalov, D., Polly, C. C., Ray, H., Roe, B. P., Shaevitz, M. H., Tayloe, I. Stancu R., Tzanov, M., Van de Water, R., White, D. H., and Wickremasinghe, A.
Subjects: High Energy Physics - Experiment (hep-ex), Nuclear Theory, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: We propose adding 300 mg/l PPO to the existing MiniBooNE detector mineral oil to increase the scintillation response. This will allow the detection of associated neutrons and increase sensitivity to final-state nucleons in neutrino interactions. This increased capability will enable an independent test of whether the current excess seen in the MiniBooNE oscillation search is signal or background. In addition it will enable other neutrino interaction measurements to be made including a search for the strange-quark contribution to the nucleon spin Delta s and a low-energy measurement of charged-current quasielastic scattering., Comment: 27 pages, 12 figures, Letter of intent submitted to Fermilab for consideration, 10/12
Published: 2012
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21. A Combined $��_��\to ��_e$ and $\bar��_��\to \bar��_e$ Oscillation Analysis of the MiniBooNE Excesses

Author: MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Brown, B. C., Bugel, L., Cheng, G., Church, E. D., Conrad, J. M., Dharmapalan, R., Djurcic, Z., Finley, D. A., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Huelsnitz, W., Ignarra, C., Imlay, R., Johnson, R. A., Karagiorgi, G., Katori, T., Kobilarcik, T., Louis, W. C., Mariani, C., Marsh, W., Mills, G. B., Mirabal, J., Moore, C. D., Mousseau, J., Nienaber, P., Osmanov, B., Pavlovic, Z., Perevalov, D., Polly, C. C., Ray, H., Roe, B. P., Russell, A. D., Shaevitz, M. H., Spitz, J., Stancu, I., Tayloe, R., Van de Water, R. G., White, D. H., Wickremasinghe, D. A., Zeller, G. P., and Zimmerman, E. D.
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract: The MiniBooNE experiment at Fermilab reports results from an analysis of the combined $��_e$ and $\bar ��_e$ appearance data from $6.46 \times 10^{20}$ protons on target in neutrino mode and $11.27 \times 10^{20}$ protons on target in antineutrino mode. A total excess of $240.3 \pm 34.5 \pm 52.6$ events ($3.8 ��$) is observed from combining the two data sets in the energy range $200, Minor wording and figure changes and added references
Published: 2012
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22. Search for 'anomalies' from neutrino and anti-neutrino oscillations at Delta_m^2 ~ 1eV^2 with muon spectrometers and large LAr-TPC imaging detectors

Author: Antonello, M., Bagliani, D., Baibussinov, B., Bilokon, H., Boffelli, F., Bonesini, M., Calligarich, E., Canci, N., Centro, S., Cesana, A., Cieslik, K., Cline, D. B., Cocco, A. G., Dequal, D., Dermenev, A., Dolfini, R., Gerone, M., Dussoni, S., Farnese, C., Fava, A., Ferrari, A., Fiorillo, G., Garvey, G. T., Gatti, F., Gibin, D., Gninenko, S., Guber, F., Guglielmi, A., Haranczyk, M., Holeczek, J., Ivashkin, A., Kirsanov, M., Kisiel, J., Kochanek, I., Kurepin, A., Łagoda, J., Lucchini, G., Louis, W. C., Mania, S., Mannocchi, G., Marchini, S., Matveev, V., Menegolli, A., Meng, G., Mills, G. B., Montanari, C., Nicoletto, M., Otwinowski, S., Palczewski, T. J., Passardi, G., Perfetto, F., Picchi, P., Pietropaolo, F., Płoński, P., Rappoldi, A., Raselli, G. L., Rossella, M., Rubbia, C., Sala, P., Scaramelli, A., Segreto, E., Stefan, D., Stepaniak, J., Sulej, R., Suvorova, O., Terrani, M., Tlisov, D., Water, R. G., Gian Carlo Trinchero, Turcato, M., Varanini, F., Ventura, S., Vignoli, C., Wang, H. G., Yang, X., Zani, A., Zaremba, K., Benettoni, M., Bernardini, P., Bertolin, A., Bozza, C., Brugnera, R., Cecchetti, A., Cecchini, S., Collazuol, G., Creti, P., Dal Corso, F., Mitri, I., Robertis, G., Serio, M., Degli Esposti, L., Di Ferdinando, D., Dore, U., Dusini, S., Fabbricatore, P., Fanin, C., Fini, R. A., Fiore, G., Garfagnini, A., Giacomelli, G., Giacomelli, R., Grelli, G., Guandalini, C., Guerzoni, M., Kose, U., Laurenti, G., Laveder, M., Lippi, I., Loddo, F., Longhin, A., Loverre, P., Mancarella, G., Mandrioli, G., Margiotta, A., Marsella, G., Mauri, N., Medinaceli, E., Mengucci, A., Mezzetto, M., Michinelli, R., Muciaccia, M. T., Orecchini, D., Paoloni, A., Pastore, A., Patrizii, L., Pozzato, M., Rescigno, R., Rosa, G., Simone, S., Sioli, M., Sirri, G., Spurio, M., Stanco, L., Stellacci, S., Surdo, A., Tenti, M., Togo, V., Ventura, M., and Zago, M.
Subjects: High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Detectors and Experimental Techniques, Nuclear Experiment, High Energy Physics - Experiment
Abstract: This proposal describes an experimental search for sterile neutrinos beyond the Standard Model with a new CERN-SPS neutrino beam. The experiment is based on two identical LAr-TPC's followed by magnetized spectrometers, observing the electron and muon neutrino events at 1600 and 300 m from the proton target. This project will exploit the ICARUS T600, moved from LNGS to the CERN "Far" position. An additional 1/4 of the T600 detector will be constructed and located in the "Near" position. Two spectrometers will be placed downstream of the two LAr-TPC detectors to greatly complement the physics capabilities. Spectrometers will exploit a classical dipole magnetic field with iron slabs, and a new concept air-magnet, to perform charge identification and muon momentum measurements in a wide energy range over a large transverse area. In the two positions, the radial and energy spectra of the nu_e beam are practically identical. Comparing the two detectors, in absence of oscillations, all cross sections and experimental biases cancel out, and the two experimentally observed event distributions must be identical. Any difference of the event distributions at the locations of the two detectors might be attributed to the possible existence of {\nu}-oscillations, presumably due to additional neutrinos with a mixing angle sin^2(2theta_new) and a larger mass difference Delta_m^2_new. The superior quality of the LAr imaging TPC, in particular its unique electron-pi_zero discrimination allows full rejection of backgrounds and offers a lossless nu_e detection capability. The determination of the muon charge with the spectrometers allows the full separation of nu_mu from anti-nu_mu and therefore controlling systematics from muon mis-identification largely at high momenta., Comment: Experiment proposal
Published: 2012
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23. Dual baseline search for muon antineutrino disappearance at 0.1 eV^2 < ��m^2 < 100 eV^2

Author: MiniBooNE Collaboration, SciBooNE Collaboration, Cheng, G., Huelsnitz, W., Aguilar-Arevalo, A. A., Alcaraz-Aunion, J. L., Brice, S. J., Brown, B. C., Bugel, L., Catala-Perez, J., Church, E. D., Conrad, J. M., Dharmapalan, R., Djurcic, Z., Dore, U., Finley, D. A., Ford, R., Franke, A. J., Garcia, F. G., Garvey, G. T., Giganti, C., Gomez-Cadenas, J. J., Grange, J., Guzowski, P., Hanson, A., Hayato, Y., Hiraide, K., Ignarra, C., Imlay, R., Johnson, R. A., Jones, B. J. P., Jover-Manas, G., Karagiorgi, G., Katori, T., Kobayashi, Y. K., Kobilarcik, T., Kubo, H., Kurimoto, Y., Louis, W. C., Loverre, P. F., Ludovici, L., Mahn, K. B. M., Mariani, C., Marsh, W., Masuike, S., Matsuoka, K., McGary, V. T., Metcalf, W., Mills, G. B., Mirabal, J., Mitsuka, G., Miyachi, Y., Mizugashira, S., Moore, C. D., Mousseau, J., Nakajima, Y., Nakaya, T., Napora, R., Nienaber, P., Orme, D., Osmanov, B., Otani, M., Pavlovic, Z., Perevalov, D., Polly, C. C., Ray, H., Roe, B. P., Russell, A. D., Sanchez, F., Shaevitz, M. H., Shibata, T. -A., Sorel, M., Spitz, J., Stancu, I., Stefanski, R. J., Takei, H., Tanaka, H. -K., Tanaka, M., Tayloe, R., Taylor, I. J., Tesarek, R. J., Uchida, Y., Van de Water, R. G., Walding, J. J., Wascko, M. O., White, D. H., White, H. B., Wickremasinghe, D. A., Yokoyama, M., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment
Abstract: The MiniBooNE and SciBooNE collaborations report the results of a joint search for short baseline disappearance of \bar{��_��} at Fermilab's Booster Neutrino Beamline. The MiniBooNE Cherenkov detector and the SciBooNE tracking detector observe antineutrinos from the same beam, therefore the combined analysis of their datasets serves to partially constrain some of the flux and cross section uncertainties. Uncertainties in the ��_�� background were constrained by neutrino flux and cross section measurements performed in both detectors. A likelihood ratio method was used to set a 90% confidence level upper limit on \bar{��_��} disappearance that dramatically improves upon prior limits in the ��m^2=0.1-100 eV^2 region., 15 pages, 27 figures
Published: 2012
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24. Dual baseline search for muon neutrino disappearance at 0.5 eV^2 < ��m^2 < 40 eV^2

Author: MiniBooNE, Collaborations, SciBooNE, Mahn, K. B. M., Nakajima, Y., Aguilar-Arevalo, A. A., Alcaraz-Aunion, J. L., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Catala-Perez, J., Cheng, G., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Dharmapalan, R., Djurcic, Z., Dore, U., Finley, D. A., Fleming, B. T., Ford, R., Franke, A. J., Garcia, F. G., Garvey, G. T., Giganti, C., Gomez-Cadenas, J. J., Grange, J., Green, C., Green, J. A., Guzowski, P., Hanson, A., Hart, T. L., Hawker, E., Hayato, Y., Hiraide, K., Huelsnitz, W., Imlay, R., Johnson, R. A., Jones, B. J. P., Jover-Manas, G., Karagiorgi, G., Kasper, P., Katori, T., Kobayashi, Y. K., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Kubo, H., Kurimoto, Y., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Loverre, P. F., Ludovici, L., Mariani, C., Marsh, W., Masuike, S., Matsuoka, K., Mauger, C., McGary, V. T., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Mitsuka, G., Miyachi, Y., Mizugashira, S., Monroe, J., Moore, C. D., Mousseau, J., Nakaya, T., Napora, R., Nelson, R. H., Nienaber, P., Nowak, J. A., Orme, D., Osmanov, B., Otani, M., Ouedraogo, S., Patterson, R. B., Pavlovic, Z., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sanchez, F., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shibata, T. -A., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Spitz, J., Stancu, I., Stefanski, R. J., Sung, M., Takei, H., Tanaka, H. A., Tanaka, H. -K., Tanaka, M., Tayloe, R., Taylor, I. J., Tesarek, R. J., Tzanov, M., Uchida, Y., Van de Water, R., Walding, J. J., Wascko, M. O., White, D. H., White, H. B., Wilking, M. J., Yokoyama, M., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract: The SciBooNE and MiniBooNE collaborations report the results of a ��_��disappearance search in the ��m^2 region of 0.5-40 eV^2. The neutrino rate as measured by the SciBooNE tracking detectors is used to constrain the rate at the MiniBooNE Cherenkov detector in the first joint analysis of data from both collaborations. Two separate analyses of the combined data samples set 90% confidence level (CL) limits on ��_��disappearance in the 0.5-40 eV^2 ��m^2 region, with an improvement over previous experimental constraints between 10 and 30 eV^2., 10 pages, 9 figures. Re-submitted to Phys. Rev. D
Published: 2011
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25. Corrections to the HARP-CDP Analysis of the LSND Neutrino Oscillation Backgrounds

Author: Garvey, G. T., William Louis, Mills, G. B., and White, D. H.
Subjects: High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: Several mistakes have been found in recent papers that purport to reanalyze the backgrounds to the LSND neutrino oscillation signal. Once these mistakes are corrected, then it is determined that the background estimates in the papers are close to (if not lower than) the LSND background estimate., Comment: 1 page, 0 figures
Published: 2011
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26. First Measurement of the Muon Neutrino Charged Current Quasielastic Double Differential Cross Section

Author: MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Green, C., Green, J. A., Hart, T. L., Hawker, E., Imlay, R., Johnson, R. A., Karagiorgi, G., Kasper, P., Katori, T., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Mahn, K. B. M., Marsh, W., Mauger, C., McGary, V. T., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Mousseau, J., Nelson, R. H., Nienaber, P., Nowak, J. A., Osmanov, B., Ouedraogo, S., Patterson, R. B., Pavlovic, Z., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Spitz, J., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., Van de Water, R. G., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Research Groups and Centres\Physics\Low Temperature Physics, Faculty of Science\Physics, FOS: Physical sciences, High Energy Physics - Experiment
Abstract: A high-statistics sample of charged-current muon neutrino scattering events collected with the MiniBooNE experiment is analyzed to extract the first measurement of the double differential cross section (d(2)sigma/dT(mu)dcos theta(mu)) for charged-current quasielastic (CCQE) scattering on carbon. This result features minimal model dependence and provides the most complete information on this process to date. With the assumption of CCQE scattering, the absolute cross section as a function of neutrino energy (sigma[E-nu]) and the single differential cross section (d sigma/dQ(2)) are extracted to facilitate comparison with previous measurements. These quantities may be used to characterize an effective axial-vector form factor of the nucleon and to improve the modeling of low-energy neutrino interactions on nuclear targets. The results are relevant for experiments searching for neutrino oscillations., This work was conducted with support from Fermilab, the U.S. Department of Energy, and the National Science Foundation.
Published: 2010

27. Measurement of Neutrino-Induced Charged-Current Charged Pion Production Cross Sections on Mineral Oil at E$_��\sim 1~\textrm{GeV}$

Author: Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Dharmapalan, R., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Green, C., Green, J. A., Hart, T. L., Hawker, E., Imlay, R., Johnson, R. A., Karagiorgi, G., Kasper, P., Katori, T., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Mahn, K. B. M., Marsh, W., Mauger, C., McGary, V. T., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Mousseau, J., Nelson, R. H., Nienaber, P., Nowak, J. A., Osmanov, B., Ouedraogo, S., Patterson, R. B., Pavlovic, Z., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Spitz, J., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., Van de Water, R. G., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment
Abstract: Using a high-statistics, high-purity sample of $��_��$-induced charged current, charged pion events in mineral oil (CH$_2$), MiniBooNE reports a collection of interaction cross sections for this process. This includes measurements of the CC$��^+$ cross section as a function of neutrino energy, as well as flux-averaged single- and double-differential cross sections of the energy and direction of both the final-state muon and pion. In addition, each of the single-differential cross sections are extracted as a function of neutrino energy to decouple the shape of the MiniBooNE energy spectrum from the results. In many cases, these cross sections are the first time such quantities have been measured on a nuclear target and in the 1 GeV energy range., 29 pages and 28 figures
Published: 2010
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28. Measurement of $��_��$-induced charged-current neutral pion production cross sections on mineral oil at $E_��\in0.5-2.0$ GeV

Author: Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Dharmapalan, R., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Garcia, F. G., Garvey, G. T., Grange, J., Green, C., Green, J. A., Hart, T. L., Hawker, E., Imlay, R., Johnson, R. A., Karagiorgi, G., Kasper, P., Katori, T., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Mahn, K. B. M., Marsh, W., Mauger, C., McGary, V. T., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Mousseau, J., Nelson, R. H., Nienaber, P., Nowak, J. A., Osmanov, B., Ouedraogo, S., Patterson, R. B., Pavlovic, Z., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Spitz, J., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., VandeWater, R. G., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract: Using a custom 3 ��erenkov-ring fitter, we report cross sections for $��_��$-induced charged-current single $��^0$ production on mineral oil (\chtwo) from a sample of 5810 candidate events with 57% signal purity over an energy range of $0.5-2.0$GeV. This includes measurements of the absolute total cross section as a function of neutrino energy, and flux-averaged differential cross sections measured in terms of $Q^2$, $��^-$ kinematics, and $��^0$ kinematics. The sample yields a flux-averaged total cross section of $(9.2\pm0.3_{stat.}\pm1.5_{syst.})\times10^{-39}$cm$^2$/CH$_2$ at mean neutrino energy of 0.965GeV., 21 pages, 14 figures, and 11 tables
Published: 2010
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29. Measurement of ��_��and \bar��_��induced neutral current single $��^0$ production cross sections on mineral oil at E_��O(1 GeV)

Author: The MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Garcia, F. G., Garvey, G. T., Gonzales, J., Grange, J., Green, C., Green, J. A., Hart, T. L., Hawker, E., Imlay, R., Johnson, R. A., Karagiorgi, G., Kasper, P., Katori, T., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Mahn, K. B. M., Marsh, W., Mauger, C., McGary, V. T., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Mousseau, J., Nelson, R. H., Nienaber, P., Nowak, J. A., Osmanov, B., Ouedraogo, S., Patterson, R. B., Pavlovic, Z., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Spitz, J., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., Van de Water, R. G., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract: MiniBooNE reports the first absolute cross sections for neutral current single ��^0 production on CH_2 induced by neutrino and antineutrino interactions measured from the largest sets of NC ��^0 events collected to date. The principal result consists of differential cross sections measured as functions of ��^0 momentum and ��^0 angle averaged over the neutrino flux at MiniBooNE. We find total cross sections of (4.76+/-0.05_{stat}+/-0.76_{sys})*10^{-40} cm^2/nucleon at a mean energy of =808 MeV and (1.48+/-0.05_{stat}+/-0.23_{sys})*10^{-40} cm^2/nucleon at a mean energy of =664 MeV for ��_��and \bar��_��induced production, respectively. In addition, we have included measurements of the neutrino and antineutrino total cross sections for incoherent exclusive NC 1��^0 production corrected for the effects of final state interactions to compare to prior results., 13 pages, 12 figures, 4 tables
Published: 2009
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30. Measurement of the ��_��charged current ��^+ to quasi-elastic cross section ratio on mineral oil in a 0.8 GeV neutrino beam

Author: Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Buge, L., Cao, J., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Garcia, F. G., Garvey, G. T., Green, C., Green, J. A., Hart, T. L., Hawker, E., Imlay, R., Johnson, R. A., Karagiorgi, G., Kasper, P., Katori, T., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Mahn, K. B. M., Marsh, W., McGary, V. T., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Nelson, R. H., Nienaber, P., Nowak, J. A., Osmanov, B., Ouedraogo, S., Patterson, R. B., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Spitz, J., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., Van de Water, R., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), Nuclear Theory, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Using high statistics samples of charged current $��_��$ interactions, MiniBooNE reports a measurement of the single charged pion production to quasi-elastic cross section ratio on mineral oil (CH$_2$), both with and without corrections for hadron re-interactions in the target nucleus. The result is provided as a function of neutrino energy in the range 0.4 GeV $< E_��, 4 pages, 2 figures
Published: 2009
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31. First Measurement of $��_��$ and $��_e$ Events in an Off-Axis Horn-Focused Neutrino Beam

Author: Adamson, P., Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Bishai, M., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Choudhary, B. C., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Gallagher, H. R., Garcia, F. G., Garvey, G. T., Green, C., Green, J. A., Harris, D., Hart, T. L., Hawker, E., Hylen, J., Imlay, R., Johnson, R. A., Karagiorgi, G., Kasper, P., Katori, T., Kobilarcik, T., Kopp, S., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Loiacono, L., Louis, W. C., Marchionni, A., Mahn, K. B. M., Marsh, W., McGregor, G., Messier, M. D., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Nelson, J. K., Nelson, R. H., Nguyen, V. T., Nienaber, P., Nowak, J. A., Ouedraogo, S., Patterson, R. B., Pavlovic, Z., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smart, W., Smith, D., Sodeberg, M., Sorel, M., Spentzouris, P., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., Vahle, P., Van de Water, R., Viren, B., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Yumiceva, F. X., Zeller, G. P., Zimmerman, E. D., and Zwaska, R.
Subjects: High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Physics::Accelerator Physics, FOS: Physical sciences, High Energy Physics::Experiment
Abstract: We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle ($6.3^{\circ}$) with respect to the NuMI beam axis. Samples of charged current quasi-elastic $��_��$ and $��_e$ interactions are analyzed and found to be in agreement with expectation. This provides a direct verification of the expected pion and kaon contributions to the neutrino flux and validates the modeling of the NuMI off-axis beam., 4 pages, 5 figures, Submitted to Phys. Rev. Lett
Published: 2008
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32. First Observation of Coherent $��^0$ Production in Neutrino Nucleus Interactions with $E_��

Author: The MiniBooNE Collaboration, Aguilar-Arevalo, A. A., Anderson, C. E., Bazarko, A. O., Brice, S. J., Brown, B. C., Bugel, L., Cao, J., Coney, L., Conrad, J. M., Cox, D. C., Curioni, A., Djurcic, Z., Finley, D. A., Fleming, B. T., Ford, R., Garcia, F. G., Garvey, G. T., Green, C., Green, J. A., Hart, T. L., Hawker, E., Imlay, R., Johnson, R. A., Karagiori, G., Kasper, P., Katori, T., Kobilarcik, T., Kourbanis, I., Koutsoliotas, S., Laird, E. M., Linden, S. K., Link, J. M., Liu, Y., Louis, W. C., Mahn, K. B. M., Marsh, W., Martin, P. S., McGregor, G., Metcalf, W., Meyers, P. D., Mills, F., Mills, G. B., Monroe, J., Moore, C. D., Nelson, R. H., Nguyen, V. T., Nienaber, P., Nowak, J. A., Ouedraogo, S., Patterson, R. B., Perevalov, D., Polly, C. C., Prebys, E., Raaf, J. L., Ray, H., Roe, B. P., Russell, A. D., Sandberg, V., Schirato, R., Schmitz, D., Shaevitz, M. H., Shoemaker, F. C., Smith, D., Soderberg, M., Sorel, M., Spentzouris, P., Stancu, I., Stefanski, R. J., Sung, M., Tanaka, H. A., Tayloe, R., Tzanov, M., Van de Water, R., Wascko, M. O., White, D. H., Wilking, M. J., Yang, H. J., Zeller, G. P., and Zimmerman, E. D.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract: The MiniBooNE experiment at Fermilab has amassed the largest sample to date of $��^0$s produced in neutral current (NC) neutrino-nucleus interactions at low energy. This paper reports a measurement of the momentum distribution of $��^0$s produced in mineral oil (CH$_2$) and the first observation of coherent $��^0$ production below 2 GeV. In the forward direction, the yield of events observed above the expectation for resonant production is attributed primarily to coherent production off carbon, but may also include a small contribution from diffractive production on hydrogen. Integrated over the MiniBooNE neutrino flux, the sum of the NC coherent and diffractive modes is found to be (19.5 $\pm$1.1 (stat) $\pm$2.5 (sys))% of all exclusive NC $��^0$ production at MiniBooNE. These measurements are of immediate utility because they quantify an important background to MiniBooNE's search for $��_�� \to ��_e$ oscillations., Submitted to Phys. Lett. B
Published: 2008
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33. Tests of Lorentz violation in muon antineutrino to electron antineutrino oscillations

Author: Auerbach, L. B., Burman, R. L., Caldwell, D. O., Church, E. D., Cochran, A. K., Donahue, J. B., Fazely, A. R., Garvey, G. T., Gunasingha, R., Imlay, R. L., Katori, T., Louis, W. C., McIlhany, K. L., Metcalf, W. J., Mills, G. B., Sandberg, V. D., Smith, D., Stancu, I., Strossman, W. H., Tayloe, R., Sung, M., Vernon, W., White, D. H., and Yellin, S.
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A recently developed Standard-Model Extension (SME) formalism for neutrino oscillations that includes Lorentz and CPT violation is used to analyze the sidereal time variation of the neutrino event excess measured by the Liquid Scintillator Neutrino Detector (LSND) experiment. The LSND experiment, performed at Los Alamos National Laboratory, observed an excess, consistent with neutrino oscillations, of ${\bar\nu}_e$ in a beam of ${\bar\nu}_\mu$. It is determined that the LSND oscillation signal is consistent with no sidereal variation. However, there are several combinations of SME coefficients that describe the LSND data; both with and without sidereal variations. The scale of Lorentz and CPT violation extracted from the LSND data is of order $10^{-19}$ GeV for the SME coefficients $a_L$ and $E \times c_L$. This solution for Lorentz and CPT violating neutrino oscillations may be tested by other short baseline neutrino oscillation experiments, such as the MiniBooNE experiment., Comment: 10 pages, 10 figures, 2 tables, uses revtex4 replaced with version to be published in Physical Review D, 11 pages, 11 figures, 2 tables, uses revtex4
Published: 2005

34. A Proposal for a Near Detector Experiment on the Booster Neutrino Beamline: FINeSSE: Fermilab Intense Neutrino Scattering Scintillator Experiment

Author: The FINeSSE Collaboration, Brice, S., Bugel, L., Conrad, J. M., Doskow, J., Finley, D., Fleming, B. T., Garvey, G. T., Green, C., Horowitz, C., Imlay, R., Katori, T., Link, J. M., Louis, W. C., Lu, L., McGregor, G., Metcalf, W., Meyer, H. O., Ockerse, P., Papavassiliou, V., Peng, J. C., Shaevitz, M., Stefanski, R., Sung, M., Tayloe, R., Van de Water, R., Visser, G., Wang, L., Wascko, M. O., and Zeller, G. P.
Subjects: High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Nuclear Theory, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Understanding the quark and gluon substructure of the nucleon has been a prime goal of both nuclear and particle physics for more than thirty years and has led to much of the progress in strong interaction physics. Still the flavor dependence of the nucleon's spin is a significant fundamental question that is not understood. Experiments measuring the spin content of the nucleon have reported conflicting results on the amount of nucleon spin carried by strange quarks. Quasi-elastic neutrino scattering, observed using a novel detection technique, provides a theoretically clean measure of this quantity. The optimum neutrino beam energy needed to measure the strange spin of the nucleon is 1 GeV. This is also an ideal energy to search for neutrino oscillations at high $\Delta m^2$ in an astrophysically interesting region. Models of the r-process in supernovae which include high-mass sterile neutrinos may explain the abundance of neutron-rich heavy metals in the universe. These high-mass sterile neutrinos are outside the sensitivity region of any previous neutrino oscillation experiments. The Booster neutrino beamline at Fermilab provides the world's highest intensity neutrino beam in the 0.5-1.0 GeV energy range, a range ideal for both of these measurements. A small detector located upstream of the MiniBooNE detector, 100 m from the recently commissioned Booster neutrino source, could definitively measure the strange quark contribution to the nucleon spin. This detector, in conjunction with the MiniBooNE detector, could also investigate $\nu_{\mu}$ disappearance in a currently unexplored, cosmologically interesting region., Comment: 219 pages
Published: 2004
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35. J/Psi Polarization in 800-GeV p-Cu Interactions

Author: Chang, T. H., Beddo, M. E., Brown, C. N., Carey, T. A., Cooper, W. E., Gagliardi, C. A., Garvey, G. T., Geesaman, D. F., Hawker, E. A., He, X. C., Isenhower, L. D., Kaplan, D. M., Kaufman, S. B., Koetke, D. D., Kyle, G. S., McGaughey, P. L., Lee, W. M., Leitch, M. J., Moss, J. M., Mueller, B. A., Papavassiliou, V., Peng, J. C., Petitt, G., Reimer, P. E., Sadler, M. E., Sondheim, W. E., Stankus, P. W., Towell, R. S., Tribble, R. E., Vasiliev, M. A., Webb, J. C., Willis, J. L., and Young, G. R.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: We present measurements of the polarization of the $ J/\psi $ produced in 800-GeV proton interactions with a copper target. Polarization of the $ J/\psi $ is sensitive to the $ c \bar{c} $ production and hadronization processes. A longitudinal polarization is observed at large $ x_{F} $, while at small $ x_{F} $ the state is produced essentially unpolarized or slightly transversely polarized. No significant variation of the polarization is observed versus $ p_{T} $., Comment: 4 pages, 3 figures
Published: 2003

36. Search for $��^0 \to ��_��\bar��_��$ Decay in LSND

Author: Auerbach, L. B., Burman, R. L., Caldwell, D. O., Church, E. D., Cochran, A. K., Donahue, J. B., Fazely, A. R., Garvey, G. T., Gunasingha, R. M., Imlay, R. L., Kahrimanis, G., Louis, W. C., Majkic, R., Malik, A., McIlhany, K. L., Metcalf, W. J., Mills, G. B., Rupnik, D., Sandberg, V. D., Smith, D., Somodi, R. F., Stancu, I., Strossman, W. D., Sung, M., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., White, D. H., Yellin, S., and Yi, H.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment
Abstract: We observe a net beam-excess of $8.7 \pm 6.3$ (stat) $\pm 2.4$ (syst) events, above 160 MeV, resulting from the charged-current reaction of $��_��$ and/or $\bar��_��$ on C and H in the LSND detector. No beam related muon background is expected in this energy regime. Within an analysis framework of $��^0 \to ��_��\bar��_��$, we set a direct upper limit for this branching ratio of $��(��^0 \to ��_��\bar��_��) / ��(��^0 \to all) < 1.6 \times 10^{-6}$ at 90% confidence level., 4 pages, 4 figures
Published: 2003
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37. Absolute Drell-Yan Dimuon Cross Sections in 800 GeV/c pp and pd Collisions

Author: Collaboration, FNAL E866/NuSea, Webb, J. C., Awes, T. C., Brooks, M. L., Brown, C. N., Bush, J. D., Carey, T. A., Chang, T. H., Cooper, W. E., Gagliardi, C. A., Garvey, G. T., Geesaman, D. F., Hawker, E. A., He, X. C., Isenhower, L. D., Kaplan, D. M., Kaufman, S. B., Koetke, D. D., Lee, D. M., Lee, W. M., Leitch, M. J., Makins, N., McGaughey, P. L., Moss, J. M., Mueller, B. A., Nord, P. M., Papavassiliou, V., Park, B. K., Peng, J. C., Petitt, G., Reimer, P. E., Sadler, M. E., Sondheim, W. E., Stankus, P. W., Thompson, T. N., Towell, R. S., Tribble, R. E., Vasiliev, M. A., Willis, J. L., Wise, D. K., and Young, G. R.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics - Experiment
Abstract: The Fermilab E866/NuSea Collaboration has measured the Drell-Yan dimuon cross sections in 800 GeV/$c$ $pp$ and $pd$ collisions. This represents the first measurement of the Drell-Yan cross section in $pp$ collisions over a broad kinematic region and the most extensive study to date of the Drell-Yan cross section in $pd$ collisions. The results indicate that recent global parton distribution fits provide a good description of the light antiquark sea in the nucleon over the Bjorken-$x$ range $0.03 \lesssim x < 0.15$, but overestimate the valence quark distributions as $x \to 1$., submitted to Phys. Rev. Lett
Published: 2003
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38. Measurement of electron-neutrino electron elastic scattering

Author: LSND Collaboration, Auerbach, L. B., Burman, R. L., Caldwell, D. O., Church, E. D., Donahue, J. B., Fazely, A., Garvey, G. T., Gunasingha, R. M., Imlay, R., Louis, W. C., Majkic, R., Malik, A., Metcalf, W., Mills, G. B., Sandberg, V., Smith, D., Stancu, I., Sung, M., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., White, D. H., and Yellin, S.
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, Magnetic moment, Neutral current, Charge current, High Energy Physics::Phenomenology, Center (category theory), FOS: Physical sciences, Electron, Standard Model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Electron neutrino
Abstract: The cross section for the elastic scattering reaction nu_e+e- -> nu_e+e- was measured by the Liquid Scintillator Neutrino Detector using a mu+ decay-at-rest nu_e beam at the Los Alamos Neutron Science Center. The standard model of electroweak physics predicts a large destructive interference between the charge current and neutral current channels for this reaction. The measured cross section, sigma_{nu_e e-}=[10.1 +- 1.1(stat.) +- 1.0(syst.)]x E_{nu_e} (MeV) x 10^{-45} cm^2, agrees well with standard model expectations. The measured value of the interference parameter, I=-1.01 +- 0.13(stat.) +- 0.12(syst.), is in good agreement with the standard model expectation of I^{SM}=-1.09. Limits are placed on neutrino flavor-changing neutral currents. An upper limit on the muon-neutrino magnetic moment of 6.8 x 10^{-10} mu_{Bohr} is obtained using the nu_mu and \bar{nu}_mu fluxes from pi+ and mu+ decay., 22 pages, 11 figures
Published: 2001

39. Measurements of Charged Current Reactions of $��_e$ on $^{12}C$

Author: LSND Collaboration, Auerbach, L. B., Burman, R. L., Caldwell, D. O., Church, E. D., Donahue, J. B., Fazely, A., Garvey, G. T., Gunasingha, R. M., Imlay, R., Louis, W. C., Majkic, R., Malik, A., Metcalf, W., Mills, G. B., Sandberg, V., Smith, D., Stancu, I., Sung, M., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., White, D. H., and Yellin, S.
Subjects: High Energy Physics - Experiment (hep-ex), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences
Abstract: Charged Current reactions of $��_e$ on $^{12}C$ have been studied using a $��^+$ decay-at-rest $��_e$ beam at the Los Alamos Neutron Science Center. The cross section for the exclusive reaction $^{12}C(��_e,e^-)^{12}N_{g.s.}$ was measured to be $(8.9\pm0.3\pm0.9)\times10^{-42}$ cm$^2$. The observed energy dependence of the cross section and angular distribution of the outgoing electron agree well with theoretical expectations. Measurements are also presented for inclusive transitions to $^{12}N$ excited states, $^{12}C(��_e,e^-)^{12}N^*$ and compared with theoretical expectations. The measured cross section, $(4.3\pm0.4\pm0.6)\times10^{-42}$ cm$^2$, is somewhat lower than previous measurements and than a continuum random phase approximation calculation. It is in better agreement with a recent shell model calculation., 34 pages, 18 figures, accepted to PRC, replaced with the accepted one
Published: 2001
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40. Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam

Author: Aguilar, A., Auerbach, L. B., Burman, R. L., Caldwell, D. O., Church, E. D., Cochran, A. K., Donahue, J. B., Fazely, A., Garvey, G. T., Gunasingha, R. M., Imlay, R., Louis, W. C., Majkic, R., Malik, A., Metcalf, W., Mills, G. B., Sandberg, V., Smith, D., Stancu, I., Sung, M., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., White, D. H., and Yellin, S.
Subjects: High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A search for muon anti-neutrino to electron anti-neutrino oscillations was conducted by the Liquid Scintillator Neutrino Detector at the Los Alamos Neutron Science Center using muon anti-neutrinos from positive muon decay at rest. A total excess of 87.9 +/- 22.4 +/- 6.0 events consistent with electron anti-neutrino plus proton scattering to positron plus neutron was observed above the expected background. This excess corresponds to an oscillation probability of (0.264 +/- 0.067 +/- 0.045), which is consistent with an earlier analysis. In conjunction with other known limits on neutrino oscillations, the LSND data suggest that neutrino oscillations occur in the 0.2-10 eV^2/c^4 Delta-m^2 range, indicating a neutrino mass greater than 0.4 eV/c^2., Comment: 71 pages,28 figures, 17 tables
Published: 2001
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41. Observation of Polarization in Bottomonium Production at sqrt(s)=38.8 GeV

Author: Brown, C. N., Awes, T. C., Beddo, M. E., Brooks, M. L., Bush, J. D., Carey, T. A., Chang, T. H., Cooper, W. E., Gagliardi, C. A., Garvey, G. T., Geesaman, D. F., Hawker, E. A., He, X. C., Isenhower, L. D., Kaplan, D. M., Kaufman, S. B., Koetke, D. D., Kyle, G., Lee, W. M., Leitch, M. J., Makins, N., McGaughey, P. L., Moss, J. M., Mueller, B. A., Nord, P. M., Papavassiliou, V., Park, B. K., Peng, J. C., Petitt, G., Reimer, P. E., Sadler, M. E., Stankus, P. W., Towell, R. S., Tribble, R. E., Vasiliev, M. A., Webb, J. C., and Young, G. R.
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: We present a measurement of the polarization observed for bottomonium states produced in p-Cu collisions at sqrt(s)=38.8 GeV. The angular distribution of the decay dimuons of the Upsilon(1S) state show no polarization at small xF and pT but significant positive transverse production polarization for either pT > 1.8 GeV/c or for xF > 0.35. The Upsilon(2S+3S) unresolved states show a large transverse production polarization at all values of xF and pT measured. These observations are compared with an NRQCD calculation that predicts a transverse polarization in bottomonium production arising from quark-antiquark fusion and gluon-gluon fusion diagrams., 4 pages, 4 figures
Published: 2000

42. Baryon Number Flow in High-Energy Collisions

Author: Garvey, G. T, Kopeliovich, B. Z., and Povh, B.
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract: It is not obvious which partons in the proton carry its baryon number (BN). We present arguments that BN is associated with a specific topology of gluonic fields, rather than with the valence quarks. The BN distribution is easily confused with the difference between the quark and antiquark distributions. We argue, however, that they have quite different x-dependences. The distribution of BN asymmetry distribution is nearly constant at small x while q(x)-\bar q(x) \propto \sqrt{x}. This constancy of BN produces energy independence of the \bar pp annihilation cross section at high energies. Recent measurement of the baryon asymmetry at small x at HERA confirms this expectation. The BN asymmetry at mid-rapidities in heavy ion collisions is substantially enhanced by multiple interactions, as has been observed in recent experiments at the SPS. The same gluonic mechanism of BN stopping increases the production rate for cascade hyperons in a good accord with data. We expect nearly the same as at SPS amount of BN stopped in higher energy collisions at RHIC and LHC, which is, however, spread ove larger rapidity intervals., The estimated baryon stopping at RHIC is corrected in the Summary
Published: 2000

43. Physics of High-Mass Dimuon Production at the 50-GeV Proton Synchrotron

Author: Peng, J. C., Garvey, G. T., Moss, J. M., Sawada, S., and Chiba, J.
Subjects: High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Phenomenology, Nuclear Theory, Physics::Accelerator Physics, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We discuss the physics interest and the experimental feasibility for detecting high-mass dimuon pairs using the planned 50-GeV Proton Synchrotron (PS) at the KEK/JHF and JAERI/NSP joint accelerator project. The Drell-Yan measurement of $p+d$ versus $p+p$ at 50 GeV will provide unique information on the flavor asymmetry of proton's up and down sea-quark distributions in the large-$x$ region. A study of the nuclear dependences of Drell-Yan cross sections can reveal the modification of antiquark distributions in nuclei. Furthermore, the effect of energy loss for fast partons traversing nuclear medium could also be sensitively measured. If polarized proton beam becomes available at the 50-GeV PS, unique information on the sea-quark polarization could be obtained. Study of heavy quarkonium production at the 50-GeV PS can set important constraints on the mechanism of vector meson productions. Using a prototype dimuon spectrometer, we have simulated the sensitivities for a variety of measurements., Comment: 35 pages, 15 figures
Published: 2000
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44. Measurement of Differences Between J/Psi and Psi' Suppression in p-A Collisions

Author: Leitch, M. J., Lee, W. M., Beddo, M. E., Brown, C. N., Carey, T. A., Chang, T. H., Cooper, W. E., Gagliardi, C. A., Garvey, G. T., Geesaman, D. F., Hawker, E. A., He, X. C., Isenhower, L. D., Kaplan, D. M., Kaufman, S. B., Koetke, D. D., McGaughey, P. L., Moss, J. M., Mueller, B. A., Papavassiliou, V., Peng, J. C., Petitt, G., Reimer, P. E., Sadler, M. E., Sondheim, W. E., Stankus, P. W., Towell, R. S., Tribble, R. E., Vasiliev, M. A., Webb, J. C., Willis, J. L., and Young, G. R.
Subjects: FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Measurements of the suppression of the yield per nucleon of J/Psi and Psi' production for 800 GeV/c protons incident on heavy relative to light nuclear targets have been made with very broad coverage in xF and pT. The observed suppression is smallest at xF values of 0.25 and below and increases at larger values of xF. It is also strongest at small pT. Substantial differences between the Psi' and J/Psi are observed for the first time in p-A collisions. The suppression for the Psi' is stronger than that for the J/Psi for xF near zero, but becomes comparable to that for the J/Psi for xF > 0.6., 5 pages, 4 figures, accepted for publication by PRL
Published: 1999
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45. dbar/ubar Asymmetry and the Origin of the Nucleon Sea

Author: Peng, J. C., Garvey, G. T., Awes, T. C., Beddo, M. E., Brooks, M. L., Brown, C. N., Bush, J. D., Carey, T. A., Chang, T. H., Cooper, W. E., Gagliardi, C. A., Geesaman, D. F., Hawker, E. A., He, X. C., Isenhower, L. D., Kaufman, S. B., Kaplan, D. M., Kirk, P. N., Koetke, D. D., Kyle, G., Lee, D. M., Lee, W. M., Leitch, M. J., Makins, N., McGaughey, P. L., Moss, J. M., Mueller, B. A., Nord, P. M., Park, B. K., Papavassiliou, V., Petitt, G., Reimer, P. E., Sadler, M. E., Selden, J., Stankus, P. W., Sondheim, W. E., Thompson, T. N., Towell, R. S., Tribble, R. E., Vasiliev, M. A., Wang, Y. C., Wang, Z. F., Webb, J. C., Willis, J. L., Wise, D. K., and Young, G. R.
Subjects: High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The Drell-Yan cross section ratios, $\sigma(p+d)/\sigma(p+p)$, measured in Fermilab E866, have led to the first determination of $\bar d(x) / \bar u(x)$, $\bar d(x) - \bar u(x)$, and the integral of $\bar d(x) - \bar u(x)$ for the proton over the range $0.02 \le x \le 0.345$. The E866 results are compared with predictions based on parton distribution functions and various theoretical models. The relationship between the E866 results and the NMC measurement of the Gottfried integral is discussed. The agreement between the E866 results and models employing virtual mesons indicates these non-perturbative processes play an important role in the origin of the $\bar d$, $\bar u$ asymmetry in the nucleon sea., Comment: 5 pages, 3 figures, ReVTeX
Published: 1998
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46. A letter of intent for an experiment to measure nu_mu to nu_e oscillations and nu_mu disappearance at the Fermilab Booster (BooNE)

Author: Church, E., Stancu, I., VanDalen, G. J., Johnson, R. A., Conrad, J. M., Formaggio, J., Ochs, T., Shaevitz, M. H., Stern, E. G., Tamminga, B., Smith, D., Garvey, G. T., Louis, W. C., Mills, G. B., Sandberg, V., Tayloe, R., White, D. H., Kim, H. J., Imlay, R., Metcalf, W., Wadia, N., and Greenwood, Z. D.
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Physics::Accelerator Physics, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: This Letter of Intent to the Fermilab Program Advisory Committee describes a search for neutrino oscillations at the Fermilab booster. It is motivated by the LSND observation of nu_mu -> nu_e appearance. The booster neutrino experiment (BooNE) will be capable of observing both nu_mu -> nu_e appearance and nu_mu disappearance. In addition, the experiment will be able to measure Delta m^2 and sin^2(2theta) and search for CP violation in the lepton sector., Presented to Fermilab PAC June 17, 1997 LaTex, psfig Fig. 40 repaired 6-30-97
Published: 1997
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47. Evidence for nu_mu -> nu_e Neutrino Oscillations from LSND

Author: LSND Collaboration, Athanassopoulos, C., Auerbach, L. B., Burman, R. L., Caldwell, D. O., Church, E. D., Cohen, I., Donahue, J. B., Fazely, A., Federspiel, F. J., Garvey, G. T., Gunasingha, R. M., Imlay, R., Johnston, K., Kim, H. J., Louis, W. C., Majkic, R., McIlhany, K., Metcalf, W., Mills, G. B., Reeder, R. A., Sandberg, V., Smith, D., Stancu, I., Strossman, W., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., Waltz, J., White, D. H., Works, D., Xiao, Y., and Yellin, S.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract: A search for nu_mu -> nu_e oscillations has been conducted with the LSND apparatus at the Los Alamos Meson Physics Facility. Using nu_mu from pi^+ decay in flight, the nu_e appearance is detected via the charged-current reaction C(nu_e,e^-)X. Two independent analyses observe a total of 40 beam-on high-energy electron events (60 < E_e < 200 MeV) consistent with the above signature. This number is significantly above the 21.9 +- 2.1 events expected from the nu_e contamination in the beam and the beam-off background. If interpreted as an oscillation signal, the observed oscillation probability of (2.6 +- 1.0 +- 0.5) x 10^{-3} is consistent with the previously reported nu_mu_bar -> nu_e_bar oscillation evidence from LSND., 10 pages (LaTeX), 3 figures (PostScript), submitted to Phys.Rev.Lett. Additional information at http://nu1.lampf.lanl.gov/~lsnd
Published: 1997
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48. Measurements of the reactions 12C + nu_e -> e- + 12N g.s. and 12C + nu_e -> e- + 12N

Author: Athanassopoulos, C., Auerbach, L. B., Burman, R. L., Cohen, I., Caldwell, D. O., Dieterle, B. D., Donahue, J. B., Eisner, A. M., Fazely, A., Federspiel, F. J., Garvey, G. T., Gray, M., Gunasingha, R. M., Imlay, R., Johnston, K., Kim, H. J., Louis, W. C., Majkic, R., Margulies, J., McIlhany, K., Metcalf, W., Mills, G. B., Reeder, R. A., Sandberg, V., Smith, D., Stancu, I., Strossman, W., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., Waltz, J., Wang, Y-X., White, D. H., Works, D., Xiao, Y., and Yellin, S.
Subjects: High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract: Charged current reactions of nu_e on 12C have been studied using a mu decay-at-rest nu_e beam from the Los Alamos Meson Physics Facility. More than 500 events from the exclusive reaction 12C + nu_e -> e- + 12N g.s. were measured in a large Liquid Scintillator Neutrino Detector (LSND). The observed energy dependence of the cross section and the angular distribution of the outgoing electron agree well with theoretical expectations. Measurements are also presented for inclusive transitions to 12N excited states, 12C + nu_e -> e- + 12N and compared with theoretical expectations. Results are consistent with a recent Continuum Random Phase Approximation (CRPA) calculation., Figures included with psfig
Published: 1997
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49. Measurements of the reactions 12C + nu_mue -> mu- + 12N g.s. and 12C + nu_mu -> mue- + 12N

Author: Athanassopoulos, C., Auerbach, L. B., Burman, R. L., Cohen, I., Caldwell, D. O., Dieterle, B. D., Donahue, J. B., Eisner, A. M., Fazely, A., Federspiel, F. J., Garvey, G. T., Gray, M., Gunasingha, R. M., Imlay, R., Johnston, K., Kim, H. J., Louis, W. C., Majkic, R., Margulies, J., McIlhany, K., Metcalf, W., Mills, G. B., Reeder, R. A., Sandberg, V., Smith, D., Stancu, I., Strossman, W., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., Waltz, J., Wang, Y-X., White, D. H., Works, D., Xiao, Y., and Yellin, S.
Subjects: FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract: Charged current scattering of nu_mu on 12C has been studied using a pi+ decay-in-flight nu_mu beam at the Los Alamos Meson Physics Facility. A sample of 56.8 +- 9.6 events satisfying criteria for the exclusive reaction 12C + nu_mu -> mu- + 12N_g.s. was obtained using the large Liquid Scintillator Neutrino Detector (LSND). The observed flux-averaged cross section, (6.6 +- 1.0 +- 1.0) x 10^-41 cm^2, agrees well with reliable theoretical expectations. A measurement was also obtained for the inclusive cross section to all accessible 12N states, 12C + nu_��-> mu- + X. This flux-averaged cross section is (11.2 +- 0.3 +- 1.8)x 10^-40 cm^2, which is approximately half of that given by a recent Continuum Random Phase Approximation (CRPA) calculation., Figures included with psfig
Published: 1997
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50. Evidence for $\bar��_��\to\bar��_e$ Oscillations from the LSND Experiment at LAMPF

Author: Athanassopoulos, C., Auerbach, L. B., Burman, R. L., Cohen, I., Caldwell, D. O., Dieterle, B. D., Donahue, J. B., Eisner, A. M., Fazely, A., Federspiel, F. J., Garvey, G. T., Gray, M., Gunasingha, R. M., Imlay, R., Johnston, K., Kim, H. J., Louis, W. C., Majkic, R., Margulies, J., McIlhany, K., Metcalf, W., Mills, G. B., Reeder, R. A., Sandberg, V., Smith, D., Stancu, I., Strossman, W., Tayloe, R., VanDalen, G. J., Vernon, W., Wadia, N., Waltz, J., Wang, Y-X., White, D. H., Works, D., Xiao, Y., Yellin, S., and Collaboration, LSND
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract: A search for $\bar��_��\to \bar��_{e}$ oscillations has been conducted at the Los Alamos Meson Physics Facility by using $\bar��_��$ from $��^+$ decay at rest. The $\bar��_e$ are detected via the reaction $\bar��_e\,p \rightarrow e^{+}\,n$, correlated with a $��$ from $np\rightarrow d��$ ($2.2\,{\rm MeV}$). The use of tight cuts to identify $e^+$ events with correlated $��$ rays yields 22 events with $e^+$ energy between 36 and $60\,{\rm MeV}$ and only $4.6 \pm 0.6$ background events. A fit to the $e^+$ events between 20 and $60\,{\rm MeV}$ yields a total excess of $51.8^{+18.7}_{-16.9} \pm 8.0$ events. If attributed to $\bar ��_��\rightarrow \bar ��_e$ oscillations, this corresponds to an oscillation probability of ($0.31^{+0.11}_{-0.10} \pm 0.05$)\%., 4 pages, 3 figures, revtex, psfig. additional information available at http://nu1.lampf.lanl.gov/~lsnd/
Published: 1996
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