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Browsing by Author "Church, E. D."

Now showing 1 - 5 of 5
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    First measurement of the muon antineutrino double-differential charged-current quasielastic cross section
    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; 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, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Van de Water, R. G.; Wascko, M. O.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D.; MiniBoo, N. E. Collaboration (American Physical Society, 2013-08-02)
    The largest sample ever recorded of (nu) over bar (mu) charged-current quasielastic (CCQE, (nu) over bar (mu) + p -> mu(+) + n) candidate events is used to produce the minimally model-dependent, flux-integrated double-differential cross section d(2)sigma/dT(mu) d cos theta(mu) for (nu) over bar (mu) CCQE for a mineral oil target. This measurement exploits the large statistics of the MiniBooNE antineutrino mode sample and provides the most complete information of this process to date. In order to facilitate historical comparisons, the flux-unfolded total cross section sigma(E-nu) and single-differential cross section d sigma/dQ(2) on both mineral oil and on carbon are also reported. The observed cross section is somewhat higher than the predicted cross section from a model assuming independently acting nucleons in carbon with canonical form factor values. The shape of the data are also discrepant with this model. These results have implications for intranuclear processes and can help constrain signal and background processes for future neutrino oscillation measurements.
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    Improved Search for (nu)over-bar(mu) -> (nu)over-bar(e) Oscillations in the MiniBooNE Experiment
    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; 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, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Van de Water, R. G.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D.; MiniBoo, N. E. Collaboration (American Physical Society, 2013-04-15)
    The MiniBooNE experiment at Fermilab reports results from an analysis of (nu)overbar(e) appearance data from 11.27 X 10(20) protons on target in the antineutrino mode, an increase of approximately a factor of 2 over the previously reported results. An event excess of 78.4 +/- 28.5 events (2.8 sigma) is observed in the energy range 200 < E-nu(QE) < 1250 MeV. If interpreted in a two-neutrino oscillation model, <(nu)over bar>(mu) -> (nu) over bar (e), the best oscillation fit to the excess has a probability of 66% while the background-only fit has chi(2) probability of 0.5% relative to the best fit. The data are consistent with antineutrino oscillations in the 0.01 < Delta m(2) < 1.0 eV(2) range and have some overlap with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector. All of the major backgrounds are constrained by in situ event measurements so nonoscillation explanations would need to invoke new anomalous background processes. The neutrino mode running also shows an excess at low energy of 162.0 +/- 47.8 events (3.4 sigma) but the energy distribution of the excess is marginally compatible with a simple two neutrino oscillation formalism. Expanded models with several sterile neutrinos can reduce the incompatibility by allowing for CP violating effects between neutrino and antineutrino oscillations.
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    Improved Search for ν¯µ → ν¯e Oscillations in the MiniBooNE Experiment
    Collaboration, T. M.; Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; 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, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Water, R. G. V. D.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D. (2013-03-12)
    The MiniBooNE experiment at Fermilab reports results from an analysis of ¯νe appearance data from 11.27 × 10²⁰ 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 ± 28.5 events (2.8σ) is observed in the energy range 200 < EQE ν < 1250 MeV. If interpreted in a two-neutrino oscillation model, ν¯µ → ν¯e, the best oscillation fit to the excess has a probability of 66% while the background-only fit has a χ 2 -probability of 0.5% relative to the best fit. The data are consistent with antineutrino oscillations in the 0.01 < ∆m² < 1.0 eV² range and have some overlap with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector (LSND). All of the major backgrounds are constrained by in-situ event measurements so non-oscillation explanations would need to invoke new anomalous background processes. The neutrino mode running also shows an excess at low energy of 162.0 ± 47.8 events (3.4σ) but the energy distribution of the excess is marginally compatible with a simple two neutrino oscillation formalism. Expanded models with several sterile neutrinos can reduce the incompatibility by allowing for CP violating effects between neutrino and antineutrino oscillations.
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    The Intermediate Neutrino Program
    Adams, C.; Alonso, J. R.; Ankowski, Artur M.; Asaadi, J. A.; Ashenfelter, J.; Axani, S. N.; Babu, K. S.; Backhouse, C.; Band, H. R.; Barbeau, P. S.; Barros, N.; Bernstein, A.; Betancourt, M.; Bishai, M.; Blucher, E.; Bouffard, J.; Bowden, N. S.; Brice, S.; Bryan, C.; Camilleri, Leslie; Cao, J.; Carlson, J.; Carr, R. E.; Chatterjee, A.; Chen, M.; Chen, S.; Chiu, M.; Church, E. D.; Collar, J. I.; Collin, G.; Conrad, Janet M.; Convery, M. R.; Cooper, R. L.; Cowen, D.; Davoudiasl, H.; Gouvea, A. D.; Dean, D. J.; Deichert, G.; Descamps, F.; DeYoung, T.; Diwan, M. V.; Djurcic, Zelimir; Dolinski, M. J.; Dolph, J.; Donnelly, B.; Dwyer, D. A.; Dytman, S.; Efremenko, Y.; Everett, L. L.; Fava, A.; Figueroa-Feliciano, E.; Fleming, B.; Friedland, A.; Fujikawa, B. K.; Gaisser, T. K.; Galeazzi, M.; Galehouse, D. C.; Galindo-Uribarri, A.; Garvey, G. T.; Gautam, S.; Gilje, K. E.; Gonzalez-Garcia, M.; Goodman, M. C.; Gordon, H.; Gramellini, E.; Green, M. P.; Guglielmi, A.; Hackenburg, R. W.; Hackenburg, A.; Halzen, F.; Han, K.; Hans, S.; Harris, D.; Heeger, K. M.; Herman, M.; Hill, R.; Holin, A.; Huber, Patrick; Jaffe, D. E.; Johnson, R. A.; Joshi, J.; Karagiorgi, Georgia S.; Kaufman, L. J.; Kayser, B.; Kettell, S. H.; Kirby, B. J.; Klein, J. R.; Kolomensky, Y. G.; Kriske, R. M.; Lane, C. E.; Langford, T. J.; Lankford, A.; Lau, K.; Learned, J. G.; Ling, J.; Link, Jonathan M.; Lissauer, D.; Littenberg, L.; Littlejohn, B. R.; Lockwitz, S.; Lokajicek, M.; Louis, W. C.; Luk, K.; Lykken, J.; Marciano, W. J.; Maricic, Jelena; Markoff, D. M.; Caicedo, D. A. M.; Mauger, C.; Mavrokoridis, K.; McCluskey, E.; McKeen, D.; McKeown, R.; Mills, G.; Mocioiu, I.; Monreal, B.; Mooney, M. R.; Morfin, J. G.; Mumm, P.; Napolitano, J.; Neilson, R.; Nelson, J. K.; Nessi, M.; Norcini, D.; Nova, F.; Nygren, D. R.; Orebi Gann, G. D.; Palamara, O.; Parsa, Z.; Patterson, R.; Paul, P.; Pocar, A.; Qian, X.; Raaf, J. L.; Rameika, R.; Ranucci, G.; Ray, H.; Reyna, D.; Rich, G. C.; Rodrigues, P.; Romero, E. R.; Rosero, R.; Rountree, S. D.; Rybolt, B.; Sanchez, Maria Cristina; Santucci, G.; Schmitz, D.; Scholberg, K.; Seckel, D.; Shaevitz, Marjorie Hansen; Shrock, R.; Smy, M. B.; Soderberg, M.; Sonzogni, A.; Sousa, A. B.; Spitz, Joshua; John, J. M. S.; Stewart, J.; Strait, J. B.; Sullivan, G.; Svoboda, R.; Szelc, A. M.; Tayloe, R.; Thomson, M.; Toups, M.; Vacheret, A.; Vagins, M. R.; Water, R. G. V. D.; Vogelaar, R. Bruce; Weber, M.; Weng, W.; Wetstein, M.; White, C.; White, B. R.; Whitehead, L.; Whittington, D. W.; Wilking, M. J.; Wilson, R. J.; Wilson, P.; Winklehner, D.; Winn, D. R.; Worcester, E.; Yang, L.; Yeh, M.; Yokley, Z. W.; Yoo, J.; Yu, B.; Yu, J.; Zhang, C. (2015-04-01)
    The US neutrino community gathered at the Workshop on the Intermediate Neutrino Program (WINP) at Brookhaven National Laboratory February 4-6, 2015 to explore opportunities in neutrino physics over the next five to ten years. Scientists from particle, astroparticle and nuclear physics participated in the workshop. The workshop examined promising opportunities for neutrino physics in the intermediate term, including possible new small to mid-scale experiments, US contributions to large experiments, upgrades to existing experiments, R&D plans and theory. The workshop was organized into two sets of parallel working group sessions, divided by physics topics and technology. Physics working groups covered topics on Sterile Neutrinos, Neutrino Mixing, Neutrino Interactions, Neutrino Properties and Astrophysical Neutrinos. Technology sessions were organized into Theory, Short-Baseline Accelerator Neutrinos, Reactor Neutrinos, Detector R&D and Source, Cyclotron and Meson Decay at Rest sessions.This report summarizes discussion and conclusions from the workshop.
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    Using L/E Oscillation Probability Distributions
    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; 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, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Water, R. G. V. D.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D. (2014-07-11)
    This paper explores the use of L/E oscillation probability distributions to compare experimental measurements and to evaluate oscillation models. In this case, L is the distance of neutrino travel and E is a measure of the interacting neutrino's energy. While comparisons using allowed and excluded regions for oscillation model parameters are likely the only rigorous method for these comparisons, the L/E distributions are shown to give qualitative information on the agreement of an experiment's data with a simple two-neutrino oscillation model. In more detail, this paper also outlines how the L/E distributions can be best calculated and used for model comparisons. Specifically, the paper presents the L/E data points for the final MiniBooNE data samples and, in the Appendix, explains and corrects the mistaken analysis published by the ICARUS collaboration.