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1. Muon (g-2) Technical Design Report

Author

Grange, J., Guarino, V., Winter, P., Wood, K., Zhao, H., Carey, R. M., Gastler, D., Hazen, E., Kinnaird, N., Miller, J. P., Mott, J., Roberts, B. L., Benante, J., Crnkovic, J., Morse, W. M., Sayed, H., Tishchenko, V., Druzhinin, V. P., Khazin, B. I., Koop, I. A., Logashenko, I., Shatunov, Y. M., Solodov, E., Korostelev, M., Newton, D., Wolski, A., Chapelain, A., Bjorkquist, R., Eggert, N., Frankenthal, A., Gibbons, L., Kim, S., Mikhailichenko, A., Orlov, Y., Rubin, D., Sweigart, D., Allspach, D., Annala, G., Barzi, E., Bourland, K., Brown, G., Casey, B. C. K., Chappa, S., Convery, M. E., Drendel, B., Friedsam, H., Gadfort, T., Hardin, K., Hawke, S., Hayes, S., Jaskierny, W., Johnstone, C., Johnstone, J., Kashikhin, V., Kendziora, C., Kiburg, B., Klebaner, A., Kourbanis, I., Kyle, J., Larson, N., Leveling, A., Lyon, A. L., Markley, D., McArthur, D., Merritt, K. W., Mokhov, N., Morgan, J. P., Nguyen, H., Ostiguy, J-F., Para, A., Popovic, C. C. Polly M., Ramberg, E., Rominsky, M., Schoo, D., Schultz, R., Still, D., Soha, A. K., Strigonov, S., Tassotto, G., Turrioni, D., Villegas, E., Voirin, E., Velev, G., Welty-Rieger, L., Wolff, D., Worel, C., Wu, J-Y., Zifko, R., Jungmann, K., Onderwater, C. J. G., Debevec, P. T., Ganguly, S., Kasten, M., Leo, S., Pitts, K., Schlesier, C., Gaisser, M., Haciomeroglu, S., Kim, Y-I., Lee, S., Lee, M-J, Semertzidis, Y. K., Giovanetti, K., Baranov, V. A., Duginov, V. N., Khomutov, N. V., Krylov, V. A., Kuchinskiy, N. A., Volnykh, V. P., Crawford, C., Fatemi, R., Gohn, W. P., Gorringe, T. P., Korsch, W., Plaster, B., Anastasi, A., Babusci, D., Dabagov, S., Ferrari, C., Fioretti, A., Gabbanini, C., Hampai, D., Palladino, A., Venanzoni, G., Bowcock, T., Carroll, J., King, B., Maxfield, S., McCormick, K., Price, J., Sim, D., Smith, A., Teubner, T., Turner, W., Whitley, M., Wormald, M., Chislett, R., Kilani, S., Lancaster, M., Motuk, E., Stuttard, T., Warren, M., Flay, D., Kawall, D., Meadows, Z., Chupp, T., Raymond, R., Tewlsey-Booth, A., Syphers, M. J., Tarazona, D., Catalonotti, S., Di Stefano, R., Iacovacci, M., Mastroianni, S., Chattopadhyay, S., Eads, M., Fortner, M., Hedin, D., Pohlman, N., de Gouvea, A., Schellman, H., Azfar, F., Henry, S., Alkhazov, G. D., Golovtsov, V. L., Neustroev, P. V., Uvarov, L. N., Vasilyev, A. A., Vorobyov, A. A., Zhalov, M. B., Cerrito, L., Gray, F., Di Sciascio, G., Moricciani, D., Fu, C., Ji, X., Li, L., Yang, H., Stöckinger, D., Cantatore, G., Cauz, D., Karuza, M., Pauletta, G., Santi, L., Baeßler, S., Bychkov, M., Frlez, E., Pocanic, D., Alonzi, L. P., Fertl, M., Fienberg, A., Froemming, N., Garcia, A., Kaspar, D. W. Hertzog J., Kammel, P., Osofsky, R., Smith, M., Swanson, E., van Wechel, T., and Lynch, K.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 at the Brookhaven National Laboratory AGS. The E821 result appears to be greater than the Standard-Model prediction by more than three standard deviations. When combined with expected improvement in the Standard-Model hadronic contributions, E989 should be able to determine definitively whether or not the E821 result is evidence for physics beyond the Standard Model. After a review of the physics motivation and the basic technique, which will use the muon storage ring built at BNL and now relocated to Fermilab, the design of the new experiment is presented. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2/3 approval., Comment: 666 pages

Published
2015

2. Measurement of the anomalous precession frequency of the muon in the Fermilab Muon <math><mi>g</mi><mo>−</mo><mn>2</mn></math> Experiment

Author

P. Bloom, P. Kammel, Timothy Chupp, C. Schlesier, P. Girotti, M. J. Lee, A. Nath, Frederick Gray, C. Gabbanini, D. Shemyakin, C. C. Polly, L. Cotrozzi, V. N. Duginov, G. Venanzoni, T. Stuttard, G. Lukicov, M. Iacovacci, H. E. Swanson, T. P. Gorringe, B. C.K. Casey, J. Grange, N. H. Tran, K. W. Hong, K. T. Pitts, R. T. Chislett, Fabrizio Marignetti, A. Lucà, Martin Fertl, E. Barlas-Yucel, J. George, A. Kuchibhotla, Dariush Hampai, T. Walton, D. Cauz, G. Sweetmore, J. Bono, I. R. Bailey, Dinko Pocanic, J. L. Holzbauer, Gavin Grant Hesketh, J. L. Ritchie, Alexander Keshavarzi, H. P. Binney, A. García, Manolis Kargiantoulakis, A. Basti, Barry King, B. MacCoy, M. Kiburg, David Rubin, Alexey Anisenkov, V. Tishchenko, Marin Karuza, H. Nguyen, P. Di Meo, Claudio Ferrari, N. Kinnaird, Liang Li, L. K. Gibbons, N. Raha, R. Chakraborty, D. Flay, R. N. Pilato, M. Incagli, M. Lancaster, Michael Syphers, S. Baeßler, T. J. V. Bowcock, J. LaBounty, G. M. Piacentino, D. Vasilkova, S. Park, A. Lusiani, T. Albahri, R. Madrak, Z. Hodge, Dominik Stöckinger, A. Chapelain, Brad Plaster, R. M. Carey, Dongdong Li, J. D. Crnkovic, D. W. Hertzog, Selcuk Haciomeroglu, J. P. Miller, Andrzej Wolski, Tabitha Halewood-leagas, Franco Bedeschi, B. L. Roberts, S. Grant, J. Fry, Kyoko Makino, J.B. Hempstead, S. Di Falco, K. S. Khaw, W. Turner, Z. Chu, A. T. Herrod, J. D. Price, T. Barrett, N. V. Khomutov, M. Farooq, P. Winter, J. Stapleton, R. Fatemi, D. Kawall, S. Charity, L. Santi, A. Schreckenberger, E. Valetov, B. Quinn, Yannis K. Semertzidis, B. Li, K. L. Giovanetti, A. E. Tewsley-Booth, S. Lee, Ran Hong, S. Leo, M. D. Galati, A.T. Fienberg, Sultan B. Dabagov, S. P. Chang, L. Kelton, G. Pauletta, Rachel Osofsky, G. Di Sciascio, S. Ganguly, D.A. Sweigart, Meghna Bhattacharya, Thomas Teubner, A. Gioiosa, S. Miozzi, B. Kiburg, J. Esquivel, A. Lorente Campos, David Kessler, E. Bottalico, M. Sorbara, Christopher Stoughton, J. Mott, Kayleigh Anne Thomson, Giovanni Cantatore, A. Fioretti, A. Anastasi, Wanwei Wu, Karie Badgley, S. Mastroianni, O. Kim, William Morse, L. Welty-Rieger, A. L. Lyon, A. Hibbert, A. Weisskopf, P. T. Debevec, W. Gohn, E. J. Ramberg, R. Di Stefano, E. Kraegeloh, Martin Berz, Z. Khechadoorian, S. Ramachandran, D. Stratakis, S. Corrodi, D. A. Tarazona, V. A. Baranov, J. Choi, F. Han, Nicholas A. Pohlman, M. Eads, I. Logashenko, N. A. Kuchinskiy, M. W. Smith, Y. I. Kim, A. Driutti, J. Kaspar, K. R. Labe, N. S. Froemming, E. Frlež, Albahri, T., Anastasi, A., Anisenkov, A., Badgley, K., Baeßler, S., Bailey, I., Baranov, V. A., Barlas-Yucel, E., Barrett, T., Basti, A., Bedeschi, F., Berz, M., Bhattacharya, M., Binney, H. P., Bloom, P., Bono, J., Bottalico, E., Bowcock, T., Cantatore, G., Carey, R. M., Casey, B. C. K., Cauz, D., Chakraborty, R., Chang, S. P., Chapelain, A., Charity, S., Chislett, R., Choi, J., Chu, Z., Chupp, T. E., Corrodi, S., Cotrozzi, L., Crnkovic, J. D., Dabagov, S., Debevec, P. T., Di Falco, S., Di Meo, P., Di Sciascio, G., Di Stefano, R., Driutti, A., Duginov, V. N., Eads, M., Esquivel, J., Farooq, M., Fatemi, R., Ferrari, C., Fertl, M., Fienberg, A. T., Fioretti, A., Flay, D., Frlež, E., Froemming, N. S., Fry, J., Gabbanini, C., Galati, M. D., Ganguly, S., Garcia, A., George, J., Gibbons, L. K., Gioiosa, A., Giovanetti, K. L., Girotti, P., Gohn, W., Gorringe, T., Grange, J., Grant, S., Gray, F., Haciomeroglu, S., Halewood-Leagas, T., Hampai, D., Han, F., Hempstead, J., Herrod, A. T., Hertzog, D. W., Hesketh, G., Hibbert, A., Hodge, Z., Holzbauer, J. L., Hong, K. W., Hong, R., Iacovacci, M., Incagli, M., Kammel, P., Kargiantoulakis, M., Karuza, M., Kaspar, J., Kawall, D., Kelton, L., Keshavarzi, A., Kessler, D., Khaw, K. S., Khechadoorian, Z., Khomutov, N. V., Kiburg, B., Kiburg, M., Kim, O., Kim, Y. I., King, B., Kinnaird, N., Kraegeloh, E., Kuchibhotla, A., Kuchinskiy, N. A., Labe, K. R., Labounty, J., Lancaster, M., Lee, M. J., Lee, S., Leo, S., Li, B., Li, D., Li, L., Logashenko, I., Lorente Campos, A., Lucà, A., Lukicov, G., Lusiani, A., Lyon, A. L., Maccoy, B., Madrak, R., Makino, K., Marignetti, F., Mastroianni, S., Miller, J. P., Miozzi, S., Morse, W. M., Mott, J., Nath, A., Nguyen, H., Osofsky, R., Park, S., Pauletta, G., Piacentino, G. M., Pilato, R. N., Pitts, K. T., Plaster, B., Počanić, D., Pohlman, N., Polly, C. C., Price, J., Quinn, B., Raha, N., Ramachandran, S., Ramberg, E., Ritchie, J. L., Roberts, B. L., Rubin, D. L., Santi, L., Schlesier, C., Schreckenberger, A., Semertzidis, Y. K., Shemyakin, D., Smith, M. W., Sorbara, M., Stöckinger, D., Stapleton, J., Stoughton, C., Stratakis, D., Stuttard, T., Swanson, H. E., Sweetmore, G., Sweigart, D. A., Syphers, M. J., Tarazona, D. A., Teubner, T., Tewsley-Booth, A. E., Thomson, K., Tishchenko, V., Tran, N. H., Turner, W., Valetov, E., Vasilkova, D., Venanzoni, G., Walton, T., Weisskopf, A., Welty-Rieger, L., Winter, P., Wolski, A., and Wu, W.

Subjects
Physics::Instrumentation and Detectors, Measure (physics), FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Omega, High Energy Physics - Experiment, Nuclear physics, Nuclear Experiment, High Energy Physics - Experiment (hep-ex), muon, 0103 physical sciences, Fermilab, Nuclear Experiment (nucl-ex), 010306 general physics, Larmor precession, Physics, Muon, 010308 nuclear & particles physics, Settore FIS/01 - Fisica Sperimentale, anomalous magnetic moment, 3. Good health, Magnetic field, Physics::Accelerator Physics, High Energy Physics::Experiment, Storage ring, Fermi Gamma-ray Space Telescope
Abstract

The Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency $\omega_a$ to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run in 2018. When combined with a precision measurement of the magnetic field of the experiment's muon storage ring, the precession frequency measurement determines a muon magnetic anomaly of $a_{\mu}({\rm FNAL}) = 116\,592\,040(54) \times 10^{-11}$ (0.46 ppm). This article describes the multiple techniques employed in the reconstruction, analysis and fitting of the data to measure the precession frequency. It also presents the averaging of the results from the eleven separate determinations of \omega_a, and the systematic uncertainties on the result., Comment: 29 pages, 19 figures. Published in Physical Review D

Published
2021
Full Text
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3. Measurement of the anomalous precession frequency of the muon in the Fermilab Muon Experiment

Author

T. Albahri, A. Anastasi, A. Anisenkov, K. Badgley, S. Bae??ler, I. Bailey, V. ???A. Baranov, E. Barlas-Yucel, T. Barrett, A. Basti, F. Bedeschi, M. Berz, M. Bhattacharya, H. ???P. Binney, P. Bloom, J. Bono, E. Bottalico, T. Bowcock, G. Cantatore, R. ???M. Carey, B. ???C. ???K. Casey, D. Cauz, R. Chakraborty, S. ???P. Chang, A. Chapelain, S. Charity, R. Chislett, J. Choi, Z. Chu, T. ???E. Chupp, S. Corrodi, L. Cotrozzi, J. ???D. Crnkovic, S. Dabagov, P. ???T. Debevec, S. Di Falco, P. Di Meo, G. Di Sciascio, R. Di Stefano, A. Driutti, V. ???N. Duginov, M. Eads, J. Esquivel, M. Farooq, R. Fatemi, C. Ferrari, M. Fertl, A. ???T. Fienberg, A. Fioretti, D. Flay, E. Frle??, N. ???S. Froemming, J. Fry, C. Gabbanini, M. ???D. Galati, S. Ganguly, A. Garcia, J. George, L. ???K. Gibbons, A. Gioiosa, K. ???L. Giovanetti, P. Girotti, W. Gohn, T. Gorringe, J. Grange, S. Grant, F. Gray, S. Haciomeroglu, T. Halewood-Leagas, D. Hampai, F. Han, J. Hempstead, A. ???T. Herrod, D. ???W. Hertzog, G. Hesketh, A. Hibbert, Z. Hodge, J. ???L. Holzbauer, K. ???W. Hong, R. Hong, M. Iacovacci, M. Incagli, P. Kammel, M. Kargiantoulakis, M. Karuza, J. Kaspar, D. Kawall, L. Kelton, A. Keshavarzi, D. Kessler, K. ???S. Khaw, Z. Khechadoorian, N. ???V. Khomutov, B. Kiburg, M. Kiburg, O. Kim, Y. ???I. Kim, B. King, N. Kinnaird, E. Kraegeloh, A. Kuchibhotla, N. ???A. Kuchinskiy, K. ???R. Labe, J. LaBounty, M. Lancaster, M. ???J. Lee, S. Lee, S. Leo, B. Li, D. Li, L. Li, I. Logashenko, A. Lorente Campos, A. Luc??, G. Lukicov, A. Lusiani, A. ???L. Lyon, B. MacCoy, R. Madrak, K. Makino, F. Marignetti, S. Mastroianni, J. ???P. Miller, S. Miozzi, W. ???M. Morse, J. Mott, A. Nath, H. Nguyen, R. Osofsky, S. Park, G. Pauletta, G. ???M. Piacentino, R. ???N. Pilato, K. ???T. Pitts, B. Plaster, D. Po??ani??, N. Pohlman, C. ???C. Polly, J. Price, B. Quinn, N. Raha, S. Ramachandran, E. Ramberg, J. ???L. Ritchie, B. ???L. Roberts, D. ???L. Rubin, L. Santi, C. Schlesier, A. Schreckenberger, Y. ???K. Semertzidis, D. Shemyakin, M. ???W. Smith, M. Sorbara, D. St??ckinger, J. Stapleton, C. Stoughton, D. Stratakis, T. Stuttard, H. ???E. Swanson, G. Sweetmore, D. ???A. Sweigart, M. ???J. Syphers, D. ???A. Tarazona, T. Teubner, A. ???E. Tewsley-Booth, K. Thomson, V. Tishchenko, N. ???H. Tran, W. Turner, E. Valetov, D. Vasilkova, G. Venanzoni, T. Walton, A. Weisskopf, L. Welty-Rieger, P. Winter, A. Wolski, W. Wu, Albahri, T., Anastasi, A., Anisenkov, A., Badgley, K., Bae??ler, S., Bailey, I., Baranov, V. ???A., Barlas-Yucel, E., Barrett, T., Basti, A., Bedeschi, F., Berz, M., Bhattacharya, M., Binney, H. ???P., Bloom, P., Bono, J., Bottalico, E., Bowcock, T., Cantatore, G., Carey, R. ???M., Casey, B. ???C. ???K., Cauz, D., Chakraborty, R., Chang, S. ???P., Chapelain, A., Charity, S., Chislett, R., Choi, J., Chu, Z., Chupp, T. ???E., Corrodi, S., Cotrozzi, L., Crnkovic, J. ???D., Dabagov, S., Debevec, P. ???T., Di Falco, S., Di Meo, P., Di Sciascio, G., Di Stefano, R., Driutti, A., Duginov, V. ???N., Eads, M., Esquivel, J., Farooq, M., Fatemi, R., Ferrari, C., Fertl, M., Fienberg, A. ???T., Fioretti, A., Flay, D., Frle??, E., Froemming, N. ???S., Fry, J., Gabbanini, C., Galati, M. ???D., Ganguly, S., Garcia, A., George, J., Gibbons, L. ???K., Gioiosa, A., Giovanetti, K. ???L., Girotti, P., Gohn, W., Gorringe, T., Grange, J., Grant, S., Gray, F., Haciomeroglu, S., Halewood-Leagas, T., Hampai, D., Han, F., Hempstead, J., Herrod, A. ???T., Hertzog, D. ???W., Hesketh, G., Hibbert, A., Hodge, Z., Holzbauer, J. ???L., Hong, K. ???W., Hong, R., Iacovacci, M., Incagli, M., Kammel, P., Kargiantoulakis, M., Karuza, M., Kaspar, J., Kawall, D., Kelton, L., Keshavarzi, A., Kessler, D., Khaw, K. ???S., Khechadoorian, Z., Khomutov, N. ???V., Kiburg, B., Kiburg, M., Kim, O., Kim, Y. ???I., King, B., Kinnaird, N., Kraegeloh, E., Kuchibhotla, A., Kuchinskiy, N. ???A., Labe, K. ???R., Labounty, J., Lancaster, M., Lee, M. ???J., Lee, S., Leo, S., Li, B., Li, D., Li, L., Logashenko, I., Lorente Campos, A., Luc??, A., Lukicov, G., Lusiani, A., Lyon, A. ???L., Maccoy, B., Madrak, R., Makino, K., Marignetti, F., Mastroianni, S., Miller, J. ???P., Miozzi, S., Morse, W. ???M., Mott, J., Nath, A., Nguyen, H., Osofsky, R., Park, S., Pauletta, G., Piacentino, G. ???M., Pilato, R. ???N., Pitts, K. ???T., Plaster, B., Po??ani??, D., Pohlman, N., Polly, C. ???C., Price, J., Quinn, B., Raha, N., Ramachandran, S., Ramberg, E., Ritchie, J. ???L., Roberts, B. ???L., Rubin, D. ???L., Santi, L., Schlesier, C., Schreckenberger, A., Semertzidis, Y. ???K., Shemyakin, D., Smith, M. ???W., Sorbara, M., St??ckinger, D., Stapleton, J., Stoughton, C., Stratakis, D., Stuttard, T., Swanson, H. ???E., Sweetmore, G., Sweigart, D. ???A., Syphers, M. ???J., Tarazona, D. ???A., Teubner, T., Tewsley-Booth, A. ???E., Thomson, K., Tishchenko, V., Tran, N. ???H., Turner, W., Valetov, E., Vasilkova, D., Venanzoni, G., Walton, T., Weisskopf, A., Welty-Rieger, L., Winter, P., Wolski, A., and Wu, W.

Abstract

The Muon g−2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency ωma to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run in 2018. When combined with a precision measurement of the magnetic field of the experiment’s muon storage ring, the precession frequency measurement determines a muon magnetic anomaly of aμ(FNAL)=116592040(54)×10−11 (0.46 ppm). This article describes the multiple techniques employed in the reconstruction, analysis, and fitting of the data to measure the precession frequency. It also presents the averaging of the results from the 11 separate determinations of ωma, and the systematic uncertainties on the result.

Published
2021

4. Magnetic Field Measurement and Analysis for the Muon g-2 Experiment at Fermilab

Author

Z. Chu, M. Eads, M. Lancaster, T. Halewood-Leagas, D. Flay, I. Logashenko, N. A. Kuchinskiy, M. W. Smith, Y. I. Kim, S.B. Dabagov, B. MacCoy, N. H. Tran, K. W. Hong, Liang Li, L. Santi, A. Chapelain, K. S. Khaw, K. T. Pitts, R. Fatemi, I. R. Bailey, E. Bottalico, Andrzej Wolski, R. N. Pilato, P. Bloom, M. Iacovacci, G. Pauletta, M. Incagli, R. Di Stefano, Timothy Chupp, E. Barlas-Yucel, G. Di Sciascio, G. Sweetmore, D. Cauz, P. Girotti, H. Nguyen, Thomas Teubner, D.A. Sweigart, A. E. Tewsley-Booth, G. Piacentino, D. Stöckinger, Karie Badgley, L. Kelton, P. Winter, Brad Plaster, J. L. Holzbauer, R. Chislett, B. Quinn, R. M. Carey, A. Conway, Kyoko Makino, A. Hibbert, B. C. K. Casey, A. Driutti, J. George, A. Lorente Campos, W. Turner, A. Lucà, S. Ramachandran, W. Wu, G. Hesketh, E. Valetov, E. Kraegeloh, Franco Bedeschi, A. Gioiosa, P. T. Debevec, L. Cotrozzi, V. N. Duginov, S. Corrodi, S. Miozzi, Yannis K. Semertzidis, M. J. Lee, S. Mastroianni, P. Di Meo, Martin Berz, K. L. Giovanetti, D. Stratakis, G. Lukicov, C. Gabbanini, J.B. Hempstead, A. Weisskopf, V. Tishchenko, B. Kiburg, H. E. Swanson, O. Kim, Michael Syphers, R. Osofsky, T. Stuttard, J. Esquivel, Dariush Hampai, T. J. V. Bowcock, Adam L. Lyon, Z. Khechadoorian, Meghna Bhattacharya, T. Barrett, Martin Fertl, D. Shemyakin, V. A. Baranov, Manolis Kargiantoulakis, R. Madrak, Marin Karuza, D. Vasilkova, S. Park, N. Kinnaird, A. Lusiani, T. Albahri, E. Ramberg, Nicholas A. Pohlman, D. Kawall, A. Schreckenberger, J. L. Ritchie, A. T. Herrod, Selcuk Haciomeroglu, L. K. Gibbons, J. Stapleton, Fabrizio Marignetti, K. Thomson, J. LaBounty, W. Gohn, G. Venanzoni, B. Li, Claudio Ferrari, Dinko Pocanic, S. P. Chang, S. Charity, T. Walton, T. P. Gorringe, Benjamin T. King, A. Fioretti, A. Anastasi, Sudeshna Ganguly, S. Lee, Ran Hong, M. D. Galati, A.T. Fienberg, William Morse, L. Welty-Rieger, Alejandro Garcia, J. Grange, J. Choi, Dongdong Li, D. W. Hertzog, A. Keshavarzi, M. Sorbara, F. Han, J. Bono, J. Mott, P. Kammel, C. Schlesier, Giovanni Cantatore, S. Di Falco, R. Chakraborty, C. C. Polly, J. P. Miller, M. Kiburg, J. Kaspar, David Rubin, S. Baeßler, K. R. Labe, N. S. Froemming, H. P. Binney, B. L. Roberts, S. Grant, J. Price, N. Raha, Z. Hodge, N. V. Khomutov, M. Farooq, Jason Crnkovic, D. A. Tarazona, C. Stoughton, A. Nath, Frederick Gray, David Kessler, Albahri, T., Anastasi, A., Badgley, K., Baessler, S., Bailey, I., Baranov, V. A., Barlas-Yucel, E., Barrett, T., Bedeschi, F., Berz, M., Bhattacharya, M., Binney, H. P., Bloom, P., Bono, J., Bottalico, E., Bowcock, T., Cantatore, G., Carey, R. M., Casey, B. C. K., Cauz, D., Chakraborty, R., Chang, S. P., Chapelain, A., Charity, S., Chislett, R., Choi, J., Chu, Z., Chupp, T. E., Conway, A., Corrodi, S., Cotrozzi, L., Crnkovic, J. D., Dabagov, S., Debevec, P. T., Di Falco, S., Di Meo, P., Di Sciascio, G., Di Stefano, R., Driutti, A., Duginov, V. N., Eads, M., Esquivel, J., Farooq, M., Fatemi, R., Ferrari, C., Fertl, M., Fienberg, A. T., Fioretti, A., Flay, D., Froemming, N. S., Gabbanini, C., Galati, M. D., Ganguly, S., Garcia, A., George, J., Gibbons, L. K., Gioiosa, A., Giovanetti, K. L., Girotti, P., Gohn, W., Gorringe, T., Grange, J., Grant, S., Gray, F., Haciomeroglu, S., Halewood-Leagas, T., Hampai, D., Han, F., Hempstead, J., Herrod, A. T., Hertzog, D. W., Hesketh, G., Hibbert, A., Hodge, Z., Holzbauer, J. L., Hong, K. W., Hong, R., Iacovacci, M., Incagli, M., Kammel, P., Kargiantoulakis, M., Karuza, M., Kaspar, J., Kawall, D., Kelton, L., Keshavarzi, A., Kessler, D., Khaw, K. S., Khechadoorian, Z., Khomutov, N. V., Kiburg, B., Kiburg, M., Kim, O., Kim, Y. I., King, B., Kinnaird, N., Kraegeloh, E., Kuchinskiy, N. A., Labe, K. R., Labounty, J., Lancaster, M., Lee, M. J., Lee, S., Li, B., Li, D., Li, L., Logashenko, I., Lorente Campos, A., Luca, A., Lukicov, G., Lusiani, A., Lyon, A. L., Maccoy, B., Madrak, R., Makino, K., Marignetti, F., Mastroianni, S., Miller, J. P., Miozzi, S., Morse, W. M., Mott, J., Nath, A., Nguyen, H., Osofsky, R., Park, S., Pauletta, G., Piacentino, G. M., Pilato, R. N., Pitts, K. T., Plaster, B., Pocanic, D., Pohlman, N., Polly, C. C., Price, J., Quinn, B., Raha, N., Ramachandran, S., Ramberg, E., Ritchie, J. L., Roberts, B. L., Rubin, D. L., Santi, L., Schlesier, C., Schreckenberger, A., Semertzidis, Y. K., Shemyakin, D., Smith, M. W., Sorbara, M., Stockinger, D., Stapleton, J., Stoughton, C., Stratakis, D., Stuttard, T., Swanson, H. E., Sweetmore, G., Sweigart, D. A., Syphers, M. J., Tarazona, D. A., Teubner, T., Tewsley-Booth, A. E., Thomson, K., Tishchenko, V., Tran, N. H., Turner, W., Valetov, E., Vasilkova, D., Venanzoni, G., Walton, T., Weisskopf, A., Welty-Rieger, L., Winter, P., Wolski, A., Wu, W., Baeßler, S., Lucà, A., Počanić, D., and Stöckinger, D.

Subjects
Field (physics), Physics::Instrumentation and Detectors, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Omega, High Energy Physics - Experiment, 010305 fluids & plasmas, Nuclear physics, High Energy Physics - Experiment (hep-ex), muon, 0103 physical sciences, Proton spin crisis, Fermilab, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Larmor precession, Physics, Muon, Settore FIS/01 - Fisica Sperimentale, VACUUM POLARIZATION CONTRIBUTIONSTEMPERATURE-DEPENDENCEPROTON NMRMOMENTSUSCEPTIBILITYTERMS, anomalous magnetic moment, Muon g-2 Experiment, anomalous precession frequency, Magnetic field, anomalous precession frequency, Muon g-2 Experiment, Fermi Gamma-ray Space Telescope
Abstract

The Fermi National Accelerator Laboratory has measured the anomalous precession frequency $a^{}_\mu = (g^{}_\mu-2)/2$ of the muon to a combined precision of 0.46 parts per million with data collected during its first physics run in 2018. This paper documents the measurement of the magnetic field in the muon storage ring. The magnetic field is monitored by nuclear magnetic resonance systems and calibrated in terms of the equivalent proton spin precession frequency in a spherical water sample at 34.7$^\circ$C. The measured field is weighted by the muon distribution resulting in $\tilde{\omega}'^{}_p$, the denominator in the ratio $\omega^{}_a$/$\tilde{\omega}'^{}_p$ that together with known fundamental constants yields $a^{}_\mu$. The reported uncertainty on $\tilde{\omega}'^{}_p$ for the Run-1 data set is 114 ppb consisting of uncertainty contributions from frequency extraction, calibration, mapping, tracking, and averaging of 56 ppb, and contributions from fast transient fields of 99 ppb., Comment: Added one citation and corrected missing normalization in Eqs (35) and (36)

Published
2021
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5. Beam dynamics corrections to the Run-1 measurement of the muon anomalous magnetic moment at Fermilab

Author

K. S. Khaw, C. Schlesier, Diktys Stratakis, R. Fatemi, S. Corrodi, D. Newton, K. T. Pitts, R. T. Chislett, L. K. Gibbons, Kyoko Makino, E. Bottalico, A. Gioiosa, J. LaBounty, J. Bono, I. R. Bailey, P. Kammel, D. Kawall, T. J. V. Bowcock, H. P. Binney, W. Turner, A. T. Herrod, S. Miozzi, A. Schreckenberger, E. Valetov, N. H. Tran, K. W. Hong, J. Esquivel, M. Sorbara, Christopher Stoughton, Fabrizio Marignetti, A. Lucà, L. Kelton, M. Eads, D. Stöckinger, T. Barrett, G. Piacentino, J. Mott, S. Baeßler, Bck Casey, Kayleigh Anne Thomson, Giovanni Cantatore, Rachel Osofsky, M. Kiburg, E. Barlas-Yucel, Michael Syphers, C. C. Polly, J. Choi, R. Chakraborty, D. Flay, David Rubin, J. Grange, N. A. Kuchinskiy, M. W. Smith, G. Lukicov, M. Iacovacci, G. Pauletta, J. L. Ritchie, B. MacCoy, L. Cotrozzi, V. N. Duginov, A. Lorente Campos, S. Lee, Ran Hong, G. Sweetmore, D.A. Sweigart, M. Korostelev, Dongdong Li, D. W. Hertzog, Alexander Keshavarzi, G. Di Sciascio, Alejandro L. Garcia, Liang Li, F. Han, D. Sathyan, A.T. Fienberg, Sultan B. Dabagov, M. J. Lee, S. P. Chang, Benjamin T. King, Marin Karuza, R. N. Pilato, M. Incagli, J.B. Hempstead, B. Quinn, L. Santi, N. Kinnaird, F. Gray, P. Winter, L. Welty-Rieger, Meghna Bhattacharya, H. Nguyen, P. Di Meo, T. Stuttard, A. L. Lyon, David Kessler, A. Chapelain, J. Kaspar, B. Li, Galati, Sudeshna Ganguly, Andrzej Wolski, A. Driutti, D. A. Tarazona, Brad Plaster, R. M. Carey, D. Cauz, G. Venanzoni, J. Fry, B. Kiburg, J. P. Miller, W. Gohn, B. L. Roberts, S. Grant, V. A. Baranov, Nicholas A. Pohlman, N. V. Khomutov, M. Farooq, Jason Crnkovic, A. Hibbert, K. R. Labe, P. T. Debevec, Thomas Teubner, S. Di Falco, J. D. Price, Yi Kim, I.B. Logashenko, Yannis K. Semertzidis, K. L. Giovanetti, A. E. Tewsley-Booth, E. Frlež, Martin Berz, S. Charity, T. Walton, Z. Khechadoorian, S. Ramachandran, A. Fiedler, T. P. Gorringe, William Morse, A. Fioretti, A. Anastasi, O. Kim, A. Weisskopf, Wanwei Wu, Karie Badgley, S. Mastroianni, J. L. Holzbauer, Manolis Kargiantoulakis, S. Park, A. Lusiani, T. Albahri, R. Madrak, Selcuk Haciomeroglu, Z. Chu, Dariush Hampai, Gavin Grant Hesketh, J. George, Tishchenko, D. Vasilkova, Franco Bedeschi, P. Bloom, Timothy Chupp, P. Girotti, Nathan Froemming, J. Stapleton, Dinko Pocanic, M. Lancaster, C. Gabbanini, N. Raha, H. E. Swanson, Martin Fertl, Z. Hodge, Tabitha Halewood-leagas, E. J. Ramberg, A. Nath, R. Di Stefano, E. Kraegeloh, Claudio Ferrari, Albahri, T., Anastasi, A., Badgley, K., Baessler, S., Bailey, I., Baranov, V. A., Barlas-Yucel, E., Barrett, T., Bedeschi, F., Berz, M., Bhattacharya, M., Binney, H. P., Bloom, P., Bono, J., Bottalico, E., Bowcock, T., Cantatore, G., Carey, R. M., Casey, B. C. K., Cauz, D., Chakraborty, R., Chang, S. P., Chapelain, A., Charity, S., Chislett, R., Choi, J., Chu, Z., Chupp, T. E., Corrodi, S., Cotrozzi, L., Crnkovic, J. D., Dabagov, S., Debevec, P. T., Di Falco, S., Di Meo, P., Di Sciascio, G., Di Stefano, R., Driutti, A., Duginov, V. N., Eads, M., Esquivel, J., Farooq, M., Fatemi, R., Ferrari, C., Fertl, M., Fiedler, A., Fienberg, A. T., Fioretti, A., Flay, D., Frlez, E., Froemming, N. S., Fry, J., Gabbanini, C., Galati, M. D., Ganguly, S., Garcia, A., George, J., Gibbons, L. K., Gioiosa, A., Giovanetti, K. L., Girotti, P., Gohn, W., Gorringe, T., Grange, J., Grant, S., Gray, F., Haciomeroglu, S., Halewood-Leagas, T., Hampai, D., Han, F., Hempstead, J., Herrod, A. T., Hertzog, D. W., Hesketh, G., Hibbert, A., Hodge, Z., Holzbauer, J. L., Hong, K. W., Hong, R., Iacovacci, M., Incagli, M., Kammel, P., Kargiantoulakis, M., Karuza, M., Kaspar, J., Kawall, D., Kelton, L., Keshavarzi, A., Kessler, D., Khaw, K. S., Khechadoorian, Z., Khomutov, N. V., Kiburg, B., Kiburg, M., Kim, O., Kim, Y. I., King, B., Kinnaird, N., Korostelev, M., Kraegeloh, E., Kuchinskiy, N. A., Labe, K. R., Labounty, J., Lancaster, M., Lee, M. J., Lee, S., Li, B., Li, D., Li, L., Logashenko, I., Lorente Campos, A., Luca, A., Lukicov, G., Lusiani, A., Lyon, A. L., Maccoy, B., Madrak, R., Makino, K., Marignetti, F., Mastroianni, S., Miller, J. P., Miozzi, S., Morse, W. M., Mott, J., Nath, A., Newton, D., Nguyen, H., Osofsky, R., Park, S., Pauletta, G., Piacentino, G. M., Pilato, R. N., Pitts, K. T., Plaster, B., Pocanic, D., Pohlman, N., Polly, C. C., Price, J., Quinn, B., Raha, N., Ramachandran, S., Ramberg, E., Ritchie, J. L., Roberts, B. L., Rubin, D. L., Santi, L., Sathyan, D., Schlesier, C., Schreckenberger, A., Semertzidis, Y. K., Smith, M. W., Sorbara, M., Stockinger, D., Stapleton, J., Stoughton, C., Stratakis, D., Stuttard, T., Swanson, H. E., Sweetmore, G., Sweigart, D. A., Syphers, M. J., Tarazona, D. A., Teubner, T., Tewsley-Booth, A. E., Thomson, K., Tishchenko, V., Tran, N. H., Turner, W., Valetov, E., Vasilkova, D., Venanzoni, G., Walton, T., Weisskopf, A., Welty-Rieger, L., Winter, P., Wolski, A., and Wu, W.

Subjects
Larmor precession, Physics, Accelerator Physics (physics.acc-ph), Nuclear and High Energy Physics, Muon, Physics and Astronomy (miscellaneous), Anomalous magnetic dipole moment, 010308 nuclear & particles physics, FOS: Physical sciences, Surfaces and Interfaces, 01 natural sciences, High Energy Physics - Experiment, Magnetic field, Nuclear physics, High Energy Physics - Experiment (hep-ex), muon magnetic anomaly, 0103 physical sciences, Physics - Accelerator Physics, Fermilab, Pitch angle, 010306 general physics, G-2 EXPERIMENTFREQUENCY, Storage ring, Beam (structure)
Abstract

This paper presents the beam dynamics systematic corrections and their uncertainties for the Run-1 data set of the Fermilab Muon g-2 Experiment. Two corrections to the measured muon precession frequency $\omega_a^m$ are associated with well-known effects owing to the use of electrostatic quadrupole (ESQ) vertical focusing in the storage ring. An average vertically oriented motional magnetic field is felt by relativistic muons passing transversely through the radial electric field components created by the ESQ system. The correction depends on the stored momentum distribution and the tunes of the ring, which has relatively weak vertical focusing. Vertical betatron motions imply that the muons do not orbit the ring in a plane exactly orthogonal to the vertical magnetic field direction. A correction is necessary to account for an average pitch angle associated with their trajectories. A third small correction is necessary because muons that escape the ring during the storage time are slightly biased in initial spin phase compared to the parent distribution. Finally, because two high-voltage resistors in the ESQ network had longer than designed RC time constants, the vertical and horizontal centroids and envelopes of the stored muon beam drifted slightly, but coherently, during each storage ring fill. This led to the discovery of an important phase-acceptance relationship that requires a correction. The sum of the corrections to $\omega_a^m$ is 0.50 $\pm$ 0.09 ppm; the uncertainty is small compared to the 0.43 ppm statistical precision of $\omega_a^m$., Comment: 35 pages, 29 figures. Accepted by Phys. Rev. Accel. Beams

Published
2021
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6. Accelerator/Experiment Operations - FY 2018

Author

G. P. Zeller, J. J. Schmidt, M. Rominsky, D. Newhart, P. Shanahan, C. C. Polly, D. A. Harris, B. T. Fleming, T. Kobilarcik, L. Fields, D. Johnson, P. Vahle, K. Decker, M. Convery, M. Lancaster, and G. Bock

Published
2018
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7. Cathode position response of large-area photomultipliers under a magnetic field

Author

T. Koblesky, C. C. Polly, J. Roloff, and Jen-Chieh Peng

Subjects
Physics, Nuclear and High Energy Physics, Scanner, Photomultiplier, Physics - Instrumentation and Detectors, business.industry, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Collimated light, Cathode, Photocathode, Magnetic field, law.invention, Transverse plane, Nuclear magnetic resonance, Optics, law, Position (vector), business, Instrumentation
Abstract

With the increasingly common use of large area PMTs (photomultiplier tubes) for nuclear and particle physics experiments, information on the position dependent magnetic field effects across the PMT's photocathode is important to effectively analyze and understand data collected from PMTs. Using an automated two-dimensional scanner, we have measured the PMT response to an external magnetic field as a function of the cathode position impinged by a collimated light source. This study shows a clear dependence on the cathode position in both collection efficiency and gain of the PMT in the presence of a magnetic field. In particular, a pronounced valley in the collection efficiency is observed for certain locations of the cathode when the magnetic field is transverse to the PMT axis. The pattern of the position dependence is presented for several different magnitudes and orientations of the magnetic field relative to the PMT., Comment: 10 pages, 7 figures

Published
2012
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8. Statistical equations and methods applied to the precision muon experiment at BNL

Author

H. N. Brown, S. Sedykh, Lawrence Sulak, F. J. M. Farley, J. M. Paley, G. zu Putlitz, S. I. Redin, Klaus-Peter Jungmann, F. Krienen, L. Duong, I. Kronkvist, Masahiko Iwasaki, T. Qian, P. T. Debevec, Alexei Trofimov, Wuzheng Meng, J. P. Miller, D. Kawall, M. Grosse-Perdekamp, R. Prigl, J. Mi, R. McNabb, E. Efstathiadis, A. Steinmetz, A. Yamamoto, Yannis K. Semertzidis, D. Nikas, G. Bunce, B. L. Roberts, B. Bousquet, J. Kindem, C. Ozben, G. W. Bennett, B.I. Khazin, Q. Peng, C. Timmermans, A. Lam, I. Logashenko, M. Kawamura, Frederick Gray, M. Deile, William Morse, Yu. F. Orlov, M. Sossong, V. W. Hughes, Yu. M. Shatunov, O. Rind, G.V. Fedotovich, D.N. Grigoriev, N.M. Ryskulov, P. M. Shagin, A. Grossmann, Y.Y. Lee, D. Warburton, J. Pretz, G. T. Danby, P. von Walter, Satish Dhawan, E. P. Sichtermann, V. P. Druzhinin, Rasmus Larsen, H. Deng, M. F. Hare, D. Winn, D. Urner, X. Huang, C. J. G. Onderwater, E. P. Solodov, R. M. Carey, D. Zimmerman, C. C. Polly, William Deninger, D. W. Hertzog, S. Giron, and P. Cushman

Subjects
Physics, Larmor precession, Nuclear and High Energy Physics, Muon, Quality (physics), Nuclear magnetic resonance, Minification, Electron, Function (mathematics), Instrumentation, Spin-½, Computational physics, Weighting
Abstract

In the muon ( g - 2 ) experiment at Brookhaven National Laboratory, the spin precession frequency ω a is obtained from a standard χ 2 minimization fit applied to the time distribution of decay electrons. The unusually high accuracy ( ∼ 0.5 ppm ) of the experiment puts stringent requirements on the quality of the fit and the level of understanding of the statistical properties of the fitted parameters. We discuss the properties of the fits and their implications on the derived value for ω a , including estimates of the effect of an imperfect fit function, methods of including additional external information to reduce the error, the effects of splitting the data into many smaller subsets of data, applying different weighting methods to the data using energy information, and various tests of data suitability.

Published
2007
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9. The Measurement of the Anomalous Magnetic Moment of the Muon at Fermilab

Author

R. Chislett, J. Carroll, D. Cauz, Andrew Smith, M. Lee, A. Anastasi, E. Hazen, M. Eads, G. Pauletta, R. Osofsky, B. Quinn, R. Fatemi, I. Logashenko, S. Baessler, D.A. Sweigart, N. A. Kuchinskiy, M. W. Smith, D. Still, Yannis K. Semertzidis, W. Gohn, K. L. Giovanetti, V. Tishchenko, L. Welty-Rieger, R. Di Stefano, C. Fu, M. Iacovacci, E. Barzi, V. Volnykh, J. F. Ostiguy, D. W. Hertzog, T. Stuttard, V. A. Baranov, C. J. G. Onderwater, Michael Syphers, G. Luo, V. P. Druzhinin, E. Won, P. T. Debevec, C. Yoshikawa, J. Grange, Martin Fertl, Stephen Maxfield, F. Azfar, A. Epps, L Li, P. Winter, C. Johnstone, A. Fioretti, B. Drendel, K. T. Pitts, M R M Warren, L. K. Gibbons, D. Stöckinger, M. Whitley, Donald B. Rubin, M. Rominsky, J. Crnkovic, T. P. Gorringe, T. Walton, C. Ferrari, Z. Meadows, G. Venanzoni, Thomas Teubner, Nicholas A. Pohlman, S. Haciomeroglu, M. Gaisser, M. Wormald, B. Casey, Frederick Gray, H. Freidsam, Marin Karuza, K. R. Lynch, P. Kammel, S. Henry, S.B. Dabagov, A. L. Lyon, C. Schlesier, E. Motuk, Yuri F. Orlov, D. Allspach, N. Rider, T. J. V. Bowcock, B. Abi, N. Kinnaird, D. Babusci, A. Para, R. M. Carey, A. de Gouvea, J. Johnstone, J. P. Miller, S. Lee, A.T. Fienberg, G. Di Sciascio, Y. Kim, H. Schellman, L.P. Alonzi, H Yang, H. Kamal Sayed, B. L. Roberts, Edward J. Swanson, V. N. Duginov, E. Ramberg, E. Frlez, N. S. Froemming, I. Kourbanis, J. Mott, L. Santi, D. Kawall, Giovanni Cantatore, N. V. Khomutov, G. Corradi, D. Flay, C. C. Polly, Nicholas Eggert, S. Marignetti, R. Bjorkquist, S. Kim, Benjamin T. King, D. Moricciani, C. Gabbanini, A. Tewlsey-Booth, V. Krylov, Yu. M. Shatunov, Andre Frankenthal, S. Leo, M. E. Convery, S. Mastroianni, A. Chapelain, A. Palladino, Andrzej Wolski, H. Nguyen, B. Kiburg, Alexander Mikhailichenko, K. W. Merritt, J. Kaspar, Dinko Pocanic, M. Popovic, M. Lancaster, W. M. Morse, Timothy Chupp, M. McEvoy, Dariush Hampai, X. Ji, M. Shenk, S. Al-Kilani, A. K. Soha, D. A. Tarazona, Klaus-Peter Jungmann, Alejandro Garcia, Logashenko, I., Grange, J., Winter, P., Carey, R. M., Hazen, E., Kinnaird, N., Miller, J. P., Mott, J., Roberts, B. L., Crnkovic, J., Morse, W. M., Sayed, H. Kamal, Tishchenko, V., Druzhinin, V. P., Shatunov, Y. M., Bjorkquist, R., Chapelain, A., Eggert, N., Frankenthal, A., Gibbons, L., Kim, S., Mikhailichenko, A., Orlov, Y., Rider, N., Rubin, D., Sweigart, D., Allspach, D., Barzi, E., Casey, B., Convery, M. E., Drendel, B., Freidsam, H., Johnstone, C., Johnstone, J., Kiburg, B., Kourbanis, I., Lyon, A. L., Merritt, K. W., Morgan, J. P., Nguyen, H., Ostiguy, J. F., Para, A., Polly, C. C., Popovic, M., Ramberg, E., Rominsky, M., Soha, A. K., Still, D., Walton, T., Yoshikawa, C., Jungmann, K., Onderwater, C. J. G., Debevec, P., Leo, S., Pitts, K., Schlesier, C., Anastasi, A., Babusci, D., Corradi, G., Hampai, D., Palladino, A., Venanzoni, G., Dabagov, S., Ferrari, C., Fioretti, A., Gabbanini, C., Di Stefano, R., Marignetti, S., Iacovacci, M., Mastroianni, S., Di Sciascio, G., Moricciani, D., Cantatore, Giovanni, Karuza, M., Giovanetti, K., Baranov, V., Duginov, V., Khomutov, N., Krylov, V., Kuchinskiy, N., Volnykh, V., Gaisser, M., Haciomeroglu, S., Kim, Y., Lee, S., Lee, M., Semertzidis, Y. K., Won, E., Fatemi, R., Gohn, W., Gorringe, T., Bowcock, T., Carroll, J., King, B., Maxfield, S., Smith, A., Teubner, T., Whitley, M., Wormald, M., Wolski, A., Al Kilani, S., Chislett, R., Lancaster, M., Motuk, E., Stuttard, T., Warren, M., Flay, D., Kawall, D., Meadows, Z., Syphers, M., Tarazona, D., Chupp, T., Tewlsey Booth, A., Quinn, B., Eads, M., Epps, A., Luo, G., Mcevoy, M., Pohlman, N., Shenk, M., de Gouvea, A., Welty Rieger, L., Schellman, H., Abi, B., Azfar, F., Henry, S., Gray, F., Fu, C., Ji, X., Li, L., Yang, H., Stockinger, D., Cauz, D., Pauletta, G., Santi, L., Baessler, S., Frlez, E., Pocanic, D., Alonzi, L. P., Fertl, M., Fienberg, A., Froemming, N., Garcia, A., Hertzog, D. W., Kammel, P., Kaspar, J., Osofsky, R., Smith, M., Swanson, E., Lynch, K., Precision Frontier, Ostiguy, J. -F., Cantatore, G., Al-Kilani, S., Tewlsey-Booth, A., Welty-Rieger, L., and Abys, Salvatore

Subjects
Particle physics, magnetic moment, standard model, General Physics and Astronomy, Standard deviation, Standard Model, Muon magnetic moment, Nuclear physics, Physics and Astronomy (all), anomalous magnetic moment, Positron, muon anomaly, muon, Fermilab, Physical and Theoretical Chemistry, instrumentation, Physics, Muon, Anomalous magnetic moment, Standard model, Chemistry (all), Anomalous magnetic dipole moment, Magnetic moment, General Chemistry, Magnetic field, High Energy Physics::Experiment, measurement, muon, magnetic moment, instrumentation, measurement
Abstract

The anomalous magnetic moment of the muon is one of the most precisely measured quantities in experimental particle physics. Its latest measurement at Brookhaven National Laboratory deviates from the Standard Model expectation by approximately 3.5 standard deviations. The goal of the new experiment, E989, now under construction at Fermilab, is a fourfold improvement in precision. Here, we discuss the details of the future measurement and its current status. C 2015 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4917553]

Published
2015
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10. Recent results from the BNL g-2 experiment

Author

D.N. Grigoriev, D. Zimmerman, M. Sossong, C. Ozben, C. C. Polly, P. Cushman, Satish Dhawan, J. Pretz, F. J. M. Farley, I. Logashenko, P. von Walter, E. P. Solodov, G. zu Putlitz, S. I. Redin, R. M. Carey, Klaus-Peter Jungmann, D. W. Hertzog, A. Grossman, Frederick Gray, F. Krienen, D. Urner, Masahiko Iwasaki, S. Giron, C. J. G. Onderwater, L. Duong, Wuzheng Meng, Y.Y. Lee, H. N. Brown, Rasmus Larsen, R. Prigl, J. Mi, L. R. Sulak, J. P. Miller, O. Rind, H. Deng, B. L. Roberts, R. McNabb, A. Yamamoto, J. M. Paley, N.M. Ryskulov, William Deninger, D. Winn, C. Timmermans, D. Warburton, Alexei Trofimov, Yannis K. Semertzidis, E. P. Sichtermann, E. Efstathiadis, A. Steinmetz, M. F. Hare, S. Sedykh, G.V. Fedotovich, William Morse, I. Kronkvist, M. Deile, G. T. Danby, D. Kawall, V. P. Druzhinin, D. Nikas, P. T. Debevec, V. W. Hughes, M. Grosse-Perdekamp, Yu. M. Shatunov, J. Kindem, B.I. Khazin, M. Kawamura, G. Bunce, and Yuri F. Orlov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Anomalous magnetic dipole moment, Electron, Atomic and Molecular Physics, and Optics, Nuclear physics, Data set, Magnetic-moment, Physics::Accelerator Physics, High Energy Physics::Experiment, National laboratory, Storage ring
Abstract

The status of the muon g — 2 experiment at the AGS facility of Brookhaven National Laboratory is discussed. Data obtained in 1999 with positive muons has been analyzed and published. The final data set contained 0.95 × 10 9 events and had an accuracy of 1.3 ppm . Approximately four times more data with positive muons and three times more data with negative muons were obtained in 2000 and 2001, respectively. These data were obtained with a more uniform magnetic field and with different storage ring tunes. An accuracy of the order of 0.5 ppm is anticipated.

Published
2002

11. Muon g — 2 experiment at Brookhaven National Laboratory

Author

N.M. Ryskulov, L. Duong, C. Ozben, P. Cushman, F. Krienen, D.N. Grigoriev, H. N. Brown, Rasmus Larsen, Wuzheng Meng, Y.Y. Lee, P. von Walter, Yu. M. Shatunov, G.V. Fedotovich, H. Deng, M. Sossong, William Deninger, D. Winn, A. Grossmann, J. Pretz, E. P. Sichtermann, D. Urner, M. F. Hare, E. P. Solodov, R. M. Carey, C. Timmermans, William Morse, V. W. Hughes, F. J. M. Farley, Alexei Trofimov, R. Prigl, J. Mi, E. Efstathiadis, A. Steinmetz, D. Warburton, R. McNabb, D. Zimmerman, G. zu Putlitz, D. Kawall, S. I. Redin, D. Nikas, C. C. Polly, J. Kindem, Satish Dhawan, J. M. Paley, L. R. Sulak, Klaus-Peter Jungmann, J. P. Miller, B. L. Roberts, Masahiko Iwasaki, Yannis K. Semertzidis, G. T. Danby, C. J. G. Onderwater, M. Kawamur, V. P. Druzhinin, M. Deile, Frederick Gray, P. T. Debevec, A. Yamamoto, D. W. Hertzog, O. Rind, S. Giron, I. Kronkvist, Yuri F. Orlov, G. Bunce, B.I. Khazin, S. Sedykh, I. Logashenko, and M. Grosse-Perdekamp

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Muon, Alternating Gradient Synchrotron, National laboratory, Atomic and Molecular Physics, and Optics
Abstract

A precise measurement of the anomalous g value, a(mu)(+) = (g - 2)/2, for the positive muon has been made at the Brookhaven Alternating Gradient Synchrotron. The result a(mu)(+) = 11 659 202(14)(6) x 10(-10) (1.3 ppm) is in good agreement with previous measurements and has an error one third that of the combined previous data. The current theoretical value from the standard model is a(mu) (SM)= 11 659 159.6(6.7) x 10(-10) (0.57 ppm) and a(mu)(exp)-a(mu)(SM) = 42(16) x 10(-10) in which a(mu)(exp) is the world average experimental value.

Published
2002
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12. Using L/E Oscillation Probability Distributions

Author

D. H. White, C. D. Moore, E. Church, Alexis A. Aguilar-Arevalo, Zelimir Djurcic, R. Ford, G. T. Garvey, Jan Conrad, J. Mousseau, G. B. Mills, J. Mirabal, B. Osmanov, C. M. Ignarra, G. Karagiorgi, Z. Pavlovic, H. Ray, I. Stancu, W. Huelsnitz, R. L. Imlay, Ranjan Dharmapalan, C. Mariani, Rgvd Water, Rex Tayloe, D. A. Finley, J. Spitz, T. Kobilarcik, J. Grange, B. P. Roe, C. C. Polly, P. Nienaber, G. Cheng, G. P. Zeller, R. A. Johnson, B. C. Brown, A. D. Russell, L. Bugel, E. D. Zimmerman, M. H. Shaevitz, D. Perevalov, W. C. Louis, W. Marsh, F. G. Garcia, Teppei Katori, and D. A. Wickremasinghe

Subjects
MiniBooNE, ICARUS, Physics, Particle physics, Data point, Oscillation, Probability distribution, Neutrino, Neutrino oscillation, Measure (mathematics)
Abstract

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.

Published
2014
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13. Light-weight flexible magnetic shields for large-aperture photomultiplier tubes

Author

C. C. Polly, H. M. Steiner, J. Roloff, Chi Lin, S. Wang, Jen-Chieh Peng, Peter T. S. DeVore, Kam-Biu Luk, D. Escontrias, J. Ngan, Minfang Yeh, D. W. Liu, T. Koblesky, and J. Wong

Subjects
Nuclear and High Energy Physics, Photomultiplier, Physics - Instrumentation and Detectors, Shields, FOS: Physical sciences, nucl-ex, Atomic, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Nuclear magnetic resonance, Optics, Particle and Plasma Physics, Photomultiplier tube, Shield, Nuclear, FINEMET, Tube (container), Nuclear Experiment (nucl-ex), Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Nuclear Experiment, physics.ins-det, Physics, Magnetic shield, business.industry, hep-ex, Molecular, Large aperture, Instrumentation and Detectors (physics.ins-det), Photoelectric effect, equipment and supplies, Nuclear & Particles Physics, Magnetic field, Other Physical Sciences, Electromagnetic shielding, business, Astrophysics - Instrumentation and Methods for Astrophysics, human activities, Astronomical and Space Sciences, astro-ph.IM
Abstract

Thin flexible sheets of high-permeability FINEMET foils encased in thin plastic layers have been used to shield various types of 20-cm-diameter photomultiplier tubes from ambient magnetic fields. In the presence of the Earth's magnetic field this type of shielding is shown to increase the collection efficiency of photoelectrons and can improve the uniformity of response of these photomultiplier tubes., 16 pages, 18 figures

Published
2014

14. Muon g-2 experiment at Brookhaven National Laboratory

Author

C. Ozben, S. Sedykh, O. Rind, M. Sossong, N.M. Ryskulov, V. W. Hertzog, I. Kronkvist, D. Kawall, Yuri F. Orlov, I. Logashenko, J. Pretz, A. Yamamoto, J. Kindem, W. Earle, G.V. Fedotovich, F. Krienen, Rasmus Larsen, B.I. Khazin, P. V. Walter, Yu. M. Shatunov, M. Kawamura, G. zu Putlitz, E. Hazen, H. Deng, Frederick Gray, Wuzheng Meng, C. Pai, J. P. Miller, C. Timmermans, M. Grosse-Perdekamp, D. Warburton, L. Duong, H. N. Brown, F. J. M. Farley, R. Prigl, J. Mi, D. Winn, R. McNabb, Y. Y. Lee, William Morse, S. I. Redin, Alexei Trofimov, A. Grossmann, L. R. Sulak, A. Steinmetz, G. Bunce, E. P. Sichtermann, P. T. Debevec, J. M. Paley, D. W. Hertzog, S. Giron, Ulrich Haeberlen, G. T. Danby, V. P. Druzhinin, B. L. Roberts, Yannis K. Semertzidis, E. Efstathiadia, C. J. G. Onderwater, D. Urner, S. K. Dhawan, William Deninger, C. C. Polly, E. P. Solodov, R. M. Carey, Klaus-Peter Jungmann, Masahiko Iwasaki, P. Cushman, and D. Nikas

Subjects
Nuclear physics, Data set, Physics, Anomalous magnetic-moment, Nuclear and High Energy Physics, Particle physics, Muon, Anomalous magnetic dipole moment, Astronomy and Astrophysics, Positive muon, National laboratory, Atomic and Molecular Physics, and Optics
Abstract

By the end of an excellent data taking in 1999, we collected approximate to1 billion decay positrons with energy greater than 2 GeV and 30 mus after injection. The analysis of the 1999 data set were performed in parallel by various teams in the collaboration and each team provides a different approach to the analysis. The projected errors are expected to be of order 1.3 ppm statistical and below 0.5 ppm systematic. The data obtained in the 2000 run contains,approximate to4 times more decay positrons compared to 1999.

Published
2001

15. [Untitled]

Author

V. A. Andreev, G. N. Schapkin, An.A. Vorobyov, F. J. Hartmann, V. I. Jatsoura, Jules Deutsch, B. Gartner, S. J. Freedman, N. I. Voropaev, C. J. G. Onderwater, S. M. Sadetsky, W. D. Herold, V.A. Ganzha, A. Dijksman, B. Lauss, Oleg Maev, P. U. Dick, Frederick Gray, P. T. Debevec, Richard Schmidt, P. Kammel, D. V. Balin, T. Case, V. E. Markushin, A. G. Krivshich, G. E. Petrov, S. M. Clayton, D. B. Chitwood, G. G. Semenchuk, J. Egger, A. A. Fetisov, R. M. Carey, E. M. Maev, C. C. Polly, René Prieels, Jan Govaerts, D. W. Hertzog, Kenneth M. Crowe, C. Petitjean, M. A. Soroka, and D. Fahrni

Subjects
Physics, Nuclear and High Energy Physics, Muon-catalyzed fusion, Particle physics, Muon, Time projection chamber, Proton, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Muon capture, Nuclear physics, Particle decay, Physical and Theoretical Chemistry, Exotic atom, Lepton
Abstract

The aim of the MuCap experiment is a 1% measurement of the singlet capture rate Lambda_S for the basic electro-weak reaction mu + p -> n + nu_mu. This observable is sensitive to the weak form-factors of the nucleon, in particular to the induced pseudoscalar coupling constant g_P. It will provide a rigorous test of theoretical predictions based on the Standard Model and effective theories of QCD. The present method is based on high precision lifetime measurements of mu^- in hydrogen gas and the comparison with the free mu^+ lifetime. The mu^- experiment will be performed in ultra-clean, deuterium-depleted H_2 gas at 10 bar. Low density compared to liquid H_2 is chosen to avoid uncertainties due to ppmu formation. A time projection chamber acts as a pure hydrogen active target. It defines the muon stop position in 3-D and detects rare background reactions. Decay electrons are tracked in cylindrical wire-chambers and a scintillator array covering 75% of 4 pi. Comment: Int. RIKEN Conf. on Muon Catalyzed Fusion and Related Exotic Atoms, April 2001, Shimoda, Japan, to be published in Hyperfine Interactions

Published
2001
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16. Electromagnetic calorimeters for the BNL muon (g−2) experiment

Author

Jinsong Ouyang, P. Cushman, O. Rind, M. F. Hare, V. P. Druzhinin, R. M. Carey, B. Bunker, J.R Blackburn, D. Urner, C Coulsey, D. W. Hertzog, T. D. Jones, G de Santi, D. Zimmerman, C. C. Polly, J. P. Miller, Frederick Gray, J. Kindem, D. Winn, P. T. Debevec, Alexei Trofimov, C. J. G. Onderwater, S. Sedykh, C. Timmermans, and S. Giron

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Range (particle radiation), Muon, Anomalous magnetic dipole moment, Physics::Instrumentation and Detectors, Electron, Nuclear physics, Electromagnetic calorimeter, High Energy Physics::Experiment, Neutron, Instrumentation, Energy (signal processing), Storage ring, Lead scintillating fiber
Abstract

A set of 24 lead/scintillating "ber electromagnetic calorimeters has been constructed for the new muon (g!2) experiment at the Brookhaven AGS. These calorimeters were designed to provide very good energy resolution for electrons up to 3 GeV while also yielding excellent timing information. Special requirements in the experiment related to the uniformity of response, the short-term gain and timing stability, and the neutron background led to several unusual design features. The calorimeters were tested and calibrated with electrons in the energy range 0.5}4.0 GeV and have been installed and used in the muon storage ring. The design criteria, construction, and performance of the system are described. ( 2000 Elsevier Science B.V. All rights reserved. PACS: 29.40.V; 13.35.B; 14.60.E

Published
2000
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17. Status of the BNL muon (g-2) experiment

Author

W.M. Morse, S. I. Serednyakov, Yu. M. Shatunov, S. Sedykh, C. J. G. Onderwater, N.M. Ryskulov, A. Yamamoto, Lawrence Sulak, O. Rind, C. Timmermans, F. J. M. Farley, M. Sossong, P. Neumayer, H. N. Brown, G. zu Putlitz, D. Urner, S. I. Redin, W. Meng, J. Pretz, I. Kronkvist, P. T. Debevec, E. Hazen, L. Duong, E. Efstathiadis, J. Kindem, Yuri F. Orlov, S. K. Dhawan, J. P. Miller, D. W. Hertzog, M. Tanaka, V. W. Hughes, Frederick Gray, G.T. Danby, Robert Sanders, D. Miller, F. Krienen, Y.Y. Lee, Wen Liu, Klaus-Peter Jungmann, W. Earle, Masahiko Iwasaki, G. Bunce, B.I. Khazin, M. Grosse Perdekamp, M. Kawamura, D. Zimmerman, P. Cushman, C. Pai, D. Warburton, C. C. Polly, H. Deng, D. Winn, A. Grossmann, E. P. Solodov, R. M. Carey, William Deninger, M. F. Hare, G.V. Fedotovich, I.B. Logashenko, R. Prigl, J. Mi, R. McNabb, D. Kawall, Alexei Trofimov, A. Steinmetz, V. P. Druzhinin, B. L. Roberts, S. Giron, Yannis K. Semertzidis, R. Larsen, and Ulrich Haeberlen

Subjects
Larmor precession, Physics, Particle physics, Large Hadron Collider, Muon, Muon storage ring, Meson, Proton, Physics::Instrumentation and Detectors, Electron, Superconducting coils, G factor, Nuclear magnetic resonance, Nuclear physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Supersymmetry, Electrical and Electronic Engineering, Spin precession, Superconducting Coils, Instrumentation, Storage ring, Standard model
Abstract

The muon (g-2) experiment at Brookhaven completed a first run in June and July 1997. The main components of the experiment, which include the superconducting inflector, the superferric storage ring, the electrostatic quadrupoles and the lead-scintillating fiber electron calorimeters, have been commissioned satisfactorily. Our first measurement of the ratio R of the spin precession frequency of the positive muon relative to that of a free proton, R=(3.707219/spl plusmn/0.000048)/spl times/10/sup -3/, is in good agreement with the previous CERN measurements for /spl mu//sup +/ and /spl mu//sup -/, and has approximately the same uncertainty as each of these measurements. In spring 1998 a muon kicker was installed and successfully tested in the storage ring magnet and a significant improvement in the knowledge of the muon g-factor is expected from upcoming runs in August 1998 and January 1999.

Published
1999
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18. Measurement of the Antineutrino Neutral-Current Elastic Differential Cross Section

Author

Z. Pavlovic, Alexis A. Aguilar-Arevalo, W. Marsh, G. Karagiorgi, P. Nienaber, E. D. Zimmerman, A. D. Russell, B. Osmanov, J. Mousseau, Teppei Katori, M. O. Wascko, C. D. Moore, L. Bugel, C. M. Ignarra, F. G. Garcia, J. Spitz, D. H. White, H. Ray, R. Imlay, Rex Tayloe, R. G. Van de Water, T. Kobilarcik, G. Cheng, Janet Conrad, D. A. Wickremasinghe, G. B. Mills, R. Dharmapalan, W. C. Louis, G. T. Garvey, W. Huelsnitz, Zelimir Djurcic, C. Mariani, C. C. Polly, B. C. Brown, E. Church, M. H. Shaevitz, J. Mirabal, J. Grange, D. A. Finley, R. A. Johnson, B. P. Roe, G. P. Zeller, D. Perevalov, R. Ford, I. Stancu, and Science and Technology Facilities Council (STFC)

Subjects
Nuclear and High Energy Physics, Strange quark, Nuclear Theory, FOS: Physical sciences, Astronomy & Astrophysics, Kinetic energy, Physics, Particles & Fields, Physics::Geophysics, High Energy Physics - Experiment, MiniBooNE, Nuclear physics, High Energy Physics - Experiment (hep-ex), PROTONS, 0201 Astronomical and Space Sciences, SCATTERING, Nuclear Experiment, 0206 Quantum Physics, Physics, Elastic scattering, Science & Technology, Neutral current, Form factor (quantum field theory), MINIBOONE DETECTOR, Nuclear & Particles Physics, Physical Sciences, SIMULATION, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, High Energy Physics::Experiment, Neutrino, Atomic physics, Nucleon
Abstract

We report a measurement of the flux-averaged neutral-current elastic differential cross section for neutrinos scattering on mineral oil (CH{sub 2}) as a function of four-momentum transferred squared, Q{sup 2}. It is obtained by measuring the kinematics of recoiling nucleons with kinetic energy greater than 50 MeV which are readily detected in MiniBooNE. This differential cross-section distribution is fit with fixed nucleon form factors apart from an axial mass, M{sub A}, that provides a best fit for M{sub A} = 1.39 {+-} 0.11 GeV. Using the data from the charged-current neutrino interaction sample, a ratio of neutral-current to charged-current quasi-elastic cross sections as a function of Q{sup 2} has been measured. Additionally, single protons with kinetic energies above 350 MeV can be distinguished from neutrons and multiple nucleon events. Using this marker, the strange quark contribution to the neutral-current axial vector form factor at Q{sup 2} = 0, {Delta}s, is found to be {Delta}s = 0.08{+-} 0.26.

Published
2013

19. Improved Search forν¯μ→ν¯eOscillations in the MiniBooNE Experiment

Author

G. T. Garvey, C. D. Moore, J. Grange, G. P. Zeller, B. Osmanov, F. G. Garcia, D. Perevalov, H. Ray, G. Karagiorgi, R. G. Van de Water, B. C. Brown, P. Nienaber, Zelimir Djurcic, D. A. Finley, L. Bugel, C. C. Polly, Rex Tayloe, G. Cheng, W. Marsh, I. Stancu, G. B. Mills, E. Church, T. Kobilarcik, J. Spitz, Alexis A. Aguilar-Arevalo, Z. Pavlovic, R. A. Johnson, R. Dharmapalan, C. Mariani, Teppei Katori, J. Mirabal, D. A. Wickremasinghe, A. D. Russell, R. Imlay, M. H. Shaevitz, B. P. Roe, W. C. Louis, J. Mousseau, R. Ford, W. Huelsnitz, E. D. Zimmerman, C. M. Ignarra, D. H. White, and Janet Conrad

Subjects
Physics, MiniBooNE, Liquid Scintillator Neutrino Detector, Sterile neutrino, Particle physics, Oscillation, General Physics and Astronomy, CP violation, High Energy Physics::Experiment, Fermilab, Neutrino, Neutrino oscillation
Abstract

The MiniBooNE experiment at Fermilab reports results from an analysis of ν¯e appearance data from 11.27×10²⁰ 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 (2.8σ) is observed in the energy range 200QEν

Published
2013
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20. First Measurement of the Muon Anti-Neutrino Double-Differential Charged Current Quasi-Elastic Cross Section

Author

M. O. Wascko, D. A. Wickremasinghe, E. Church, W. Marsh, B. Osmanov, J. Mousseau, G. Karagiorgi, B. C. Brown, Zelimir Djurcic, C. C. Polly, Teppei Katori, P. Nienaber, Z. Pavlovic, Alexis A. Aguilar-Arevalo, M. H. Shaevitz, I. Stancu, G. B. Mills, E. D. Zimmerman, R. Dharmapalan, L. Bugel, C. D. Moore, J. Grange, A. D. Russell, W. C. Louis, C. Mariani, F. G. Garcia, W. Huelsnitz, G. P. Zeller, D. Perevalov, R. Imlay, H. Ray, R. G. Van de Water, R. A. Johnson, G. Cheng, Rex Tayloe, J. Mirabal, D. A. Finley, T. Kobilarcik, R. Ford, J. Spitz, G. T. Garvey, Janet Conrad, C. M. Ignarra, D. H. White, and B. P. Roe

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Experiment (hep-ex), Cross section (physics), Nuclear cross section, Neutrino, Nucleon, Neutrino oscillation, Charged current
Abstract

The largest sample ever recorded of $\numub$ charged-current quasi-elastic (CCQE, $\numub + p \to \mup + n$) candidate events is used to produce the minimally model-dependent, flux-integrated double-differential cross section $\frac{d^{2}\sigma}{dT_\mu d\uz}$ for $\numub$ incident on mineral oil. This measurement exploits the unprecedented statistics of the MiniBooNE anti-neutrino mode sample and provides the most complete information of this process to date. Also given to facilitate historical comparisons are the flux-unfolded total cross section $\sigma(E_\nu)$ and single-differential cross section $\frac{d\sigma}{d\qsq}$ on both mineral oil and on carbon by subtracting the $\numub$ CCQE events on hydrogen. 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 intra-nuclear processes and can help constrain signal and background processes for future neutrino oscillation measurements., Comment: 28 pages, 13 figures. Data release at http://www-boone.fnal.gov/for_physicists/data_release/ccqe_nubar/

Published
2013

21. Improved search for ν¯(μ)→ν¯(e) oscillations in the MiniBooNE experiment

Author

A A, Aguilar-Arevalo, B C, Brown, L, Bugel, G, Cheng, E D, Church, J M, Conrad, R, Dharmapalan, Z, Djurcic, D A, Finley, R, Ford, F G, Garcia, G T, Garvey, J, Grange, W, Huelsnitz, C, Ignarra, R, Imlay, R A, Johnson, G, Karagiorgi, T, Katori, T, Kobilarcik, W C, Louis, C, Mariani, W, Marsh, G B, Mills, J, Mirabal, C D, Moore, J, Mousseau, P, Nienaber, B, Osmanov, Z, Pavlovic, D, Perevalov, C C, Polly, H, Ray, B P, Roe, A D, Russell, M H, Shaevitz, J, Spitz, I, Stancu, R, Tayloe, R G, Van de Water, D H, White, D A, Wickremasinghe, G P, Zeller, and E D, Zimmerman

Abstract

The MiniBooNE experiment at Fermilab reports results from an analysis of ν[over ¯](e) appearance data from 11.27×10(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 (2.8σ) is observed in the energy range 200E(ν)(QE)1250 MeV. If interpreted in a two-neutrino oscillation model, ν[over ¯](μ)→ν[over ¯](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 0.01Δm(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 (3.4σ) 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.

Published
2013

22. Low Mass WIMP Searches with a Neutrino Experiment: A Proposal for Further MiniBooNE Running

Author

R. A. Johnson, Adam Ritz, B. P. Roe, C. C. Polly, Brian Batell, D. Perevalov, R. Ford, W. Marsh, J. Mirabal, David McKeen, W. Huelsnitz, H. Ray, R. G. Van de Water, S. Habib, I. Stancu, D. A. Wickremasinghe, Maxim Pospelov, Rex Tayloe, W. C. Louis, J. Grange, T. Kobilarcik, P. Nienaber, F. G. Garcia, G. T. Garvey, W. Ketchum, Ranjan Dharmapalan, Z. Pavlovic, Alexis A. Aguilar-Arevalo, C. D. Moore, G. B. Mills, Patrick deNiverville, C. Jiang, and Robert Cooper

Subjects
Elastic scattering, MiniBooNE, Nuclear physics, Physics, Particle physics, Muon, WIMP, Physics::Instrumentation and Detectors, Weakly interacting massive particles, Dark matter, High Energy Physics::Experiment, Neutrino, Nucleon
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.

Published
2012
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23. Letter of Intent: A new investigation of $\nu_\mu\rightarrow\nu_e$ oscillations with improved sensitivity in an enhanced MiniBooNE experiment

Author

I. Stancu, Z. Pavlovic, W. Huelsnitz, S. Habib, Robert Cooper, C. Mauger, Alexis A. Aguilar-Arevalo, G. Karagiorgi, G. B. Mills, Zelimir Djurcic, C. D. Moore, W. C. Louis, L. Bugel, B. C. Brown, D. H. White, Jan Conrad, R. Imlay, B. Osmanov, A. Wickremasinghe, M. H. Shaevitz, J. Mousseau, D. Perevalov, J. Grange, R. A. Johnson, W. Marsh, M. Tzanov, F. G. Garcia, Rex Tayloe, P. Nienaber, B. P. Roe, C. C. Polly, C. Jiang, H. Ray, R. G. Van de Water, Ranjan Dharmapalan, R. Ford, and G. T. Garvey

Subjects
Physics, MiniBooNE, Particle physics, Quasielastic scattering, Neutral current, Nuclear Theory, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment, Neutrino oscillation, Nucleon, Charged current
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.

Published
2012
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24. Short-Baseline Neutrino Focus Group Report

Author

S. Geer, Stephen J. Parke, A. de Gouvea, G. P. Zeller, R. Tschirhart, B. Kayser, G. B. Mills, R. Zwaska, S. J. Brice, Patrick Huber, André Rubbia, C. C. Polly, D. A. Harris, K. Nishikawa, and Bonnie Fleming

Subjects
Physics, Particle physics, Neutrino, Baseline (configuration management), Focus group
Published
2012
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25. Dual baseline search for muon neutrino disappearance at0.5 eV2<Δm2<40 eV2

Author

L. Bugel, Panagiotis Spentzouris, D. Orme, S. Mizugashira, E. Hawker, T. A. Shibata, H. Ray, J. A. Green, H. B. White, B. J. P. Jones, R. G. Van de Water, Y. Kobayashi, W. Metcalf, J. A. Nowak, R. B. Patterson, J. J. Walding, J. Grange, J. L. Raaf, P. D. Meyers, G. Karagiorgi, P. Nienaber, J. Catala-Perez, G. P. Zeller, V. T. McGary, A. Curioni, R. Dharmapalan, I. Stancu, R. Imlay, G. Cheng, M. O. Wascko, Zelimir Djurcic, C. C. Polly, M. Sung, S. Ouedraogo, H. Takei, R. A. Johnson, C. Giganti, S. Masuike, R. Ford, T. L. Hart, A. O. Bazarko, C. Green, R. H. Nelson, Y. Uchida, A. D. Russell, Z. Pavlovic, M. H. Shaevitz, M. Soderberg, I. J. Taylor, I. Kourbanis, Yasuhiro Nakajima, David Smith, E. D. Zimmerman, G. Mitsuka, R. Napora, L. Ludovici, M. Sorel, Federico Sanchez, Alexis A. Aguilar-Arevalo, B. Osmanov, S. Koutsoliotas, F. Mills, D. A. Finley, Katsuki Hiraide, Jocelyn Monroe, C. E. Anderson, D. H. White, M. Tzanov, W. C. Louis, F. G. Garcia, Y. Miyachi, Y. L. Liu, W. Huelsnitz, T. Kobilarcik, B. C. Brown, B. P. Roe, C. Mariani, M. J. Wilking, Y. Hayato, J. Mousseau, S. J. Brice, D. W. Schmitz, E. M. Laird, R. J. Tesarek, D. C. Cox, Masashi Yokoyama, M. Tanaka, P. H. Kasper, G. McGregor, Andrew J. Hanson, A. J. Franke, Kodai Matsuoka, H. K. Tanaka, Tsuyoshi Nakaya, U. Dore, V. D. Sandberg, Hidetoshi Kubo, C. Mauger, J. M. Link, Y. Kurimoto, C. D. Moore, H. A. Tanaka, H. J. Yang, G. Jover-Manas, P. Guzowski, Rex Tayloe, Janet Conrad, B. T. Fleming, S. K. Linden, E.J. Prebys, J. Spitz, R. J. Stefanski, L. Coney, R. Schirato, G. T. Garvey, J.J. Gómez-Cadenas, Jun Cao, F. C. Shoemaker, D. Perevalov, J. L. Alcaraz-Aunion, G. B. Mills, Kendall Mahn, W. Marsh, Minoru Otani, Teppei Katori, and P. F. Loverre

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Cherenkov detector, Detector, law.invention, Nuclear physics, MiniBooNE, law, Muon neutrino, Fermilab, Neutrino, Neutrino oscillation, Charged current
Abstract

The SciBooNE and MiniBooNE collaborations report the results of a νμ disappearance search in the Δ'm2 region of 0.5-40 eV2. 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 νμ disappearance in the 0.5-40 eV2 Δm2 region, with an improvement over previous experimental constraints between 10 and 30 eV2

Published
2012
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26. Measurement ofνμ-induced charged-current neutral pion production cross sections on mineral oil atEν∈0.5–2.0 GeV

Author

Janet Conrad, R. Ford, C. Green, B. T. Fleming, Alexis A. Aguilar-Arevalo, S. Koutsoliotas, R. J. Stefanski, F. Mills, M. Soderberg, S. K. Linden, J. Spitz, R. Dharmapalan, W. Marsh, E.J. Prebys, A. Curioni, W. Metcalf, B. P. Roe, M. Sung, David Smith, S. Ouedraogo, B. C. Brown, A. D. Russell, Teppei Katori, H. J. Yang, V. D. Sandberg, T. L. Hart, D. W. Schmitz, R. Schirato, M. H. Shaevitz, G. T. Garvey, J. M. Link, C. E. Anderson, M. J. Wilking, R. B. Patterson, R. H. Nelson, G. P. Zeller, D. Perevalov, M. Tzanov, Rex Tayloe, P. D. Meyers, F. G. Garcia, Jun Cao, Z. Djurcic, G. Karagiorgi, Jocelyn Monroe, P. H. Kasper, P. Nienaber, I. Stancu, Kendall Mahn, L. Bugel, D. H. White, G. B. Mills, R. Imlay, W. C. Louis, B. Osmanov, M. O. Wascko, D. C. Cox, G. McGregor, E. D. Zimmerman, T. Kobilarcik, Y. L. Liu, J. Grange, F. C. Shoemaker, S. J. Brice, A. O. Bazarko, M. Sorel, E. Hawker, H. Ray, R. G. Van de Water, V. T. McGary, J. A. Nowak, C. Mauger, C. D. Moore, H. A. Tanaka, J. Mousseau, E. M. Laird, J. A. Green, Panagiotis Spentzouris, J. L. Raaf, R. A. Johnson, C. C. Polly, I. Kourbanis, D. A. Finley, Z. Pavlovic, and L. Coney

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Instrumentation and Detectors, Nuclear physics, Pion, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Neutrino, Energy source, Charged current, Lepton
Abstract

The authors would like to acknowledge the support of Fermilab, the Department of Energy, and the National Science Foundation in the construction, operation, and data analysis of the Mini Booster Neutrino Experiment.

Published
2011
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27. Measurement of neutrino-induced charged-current charged pion production cross sections on mineral oil atEν∼1 GeV

Author

A. A. Aguilar-Arevalo, C. E. Anderson, A. O. Bazarko, S. J. Brice, B. C. Brown, L. Bugel, J. Cao, L. Coney, J. M. Conrad, D. C. Cox, A. Curioni, R. Dharmapalan, Z. Djurcic, D. A. Finley, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, J. Grange, C. Green, J. A. Green, T. L. Hart, E. Hawker, R. Imlay, R. A. Johnson, G. Karagiorgi, P. Kasper, T. Katori, T. Kobilarcik, I. Kourbanis, S. Koutsoliotas, E. M. Laird, S. K. Linden, J. M. Link, Y. Liu, W. C. Louis, K. B. M. Mahn, W. Marsh, C. Mauger, V. T. McGary, G. McGregor, W. Metcalf, P. D. Meyers, F. Mills, G. B. Mills, J. Monroe, C. D. Moore, J. Mousseau, R. H. Nelson, P. Nienaber, J. A. Nowak, B. Osmanov, S. Ouedraogo, R. B. Patterson, Z. Pavlovic, D. Perevalov, C. C. Polly, E. Prebys, J. L. Raaf, H. Ray, B. P. Roe, A. D. Russell, V. Sandberg, R. Schirato, D. Schmitz, M. H. Shaevitz, F. C. Shoemaker, D. Smith, M. Soderberg, M. Sorel, P. Spentzouris, J. Spitz, I. Stancu, R. J. Stefanski, M. Sung, H. A. Tanaka, R. Tayloe, M. Tzanov, R. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, H. J. Yang, G. P. Zeller, and E. D. Zimmerman

Subjects
MiniBooNE, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Pion, Meson, High Energy Physics::Experiment, Neutrino, Energy source, Charged current, Lepton
Abstract

Using a high-statistics, high-purity sample of {nu}{sub {mu}-}induced charged current, charged pion events in mineral oil (CH{sub 2}), MiniBooNE reports a collection of interaction cross sections for this process. This includes measurements of the CC{pi}{sup +} 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.

Published
2011
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28. Measurement of the neutrino component of an anti-neutrino beam observed by a non-magnetized detector

Author

G. T. Garvey, Rex Tayloe, D. H. White, R. H. Nelson, E. D. Zimmerman, G. P. Zeller, L. Bugel, G. Karagiorgi, P. Nienaber, R. Imlay, J. Spitz, V. Nguyen, W. Metcalf, J. Grange, J. A. Green, T. Kobilarcik, H. Ray, A. D. Russell, C. C. Polly, R. G. Van de Water, I. Stancu, D. Perevalov, J. A. Nowak, R. A. Johnson, Alexis A. Aguilar-Arevalo, Janet Conrad, Kendall Mahn, R. Ford, J. Mirabal, C. E. Anderson, M. Tzanov, F. G. Garcia, W. Marsh, Teppei Katori, R. J. Stefanski, S. J. Brice, C. D. Moore, Z. Pavlovic, M. Sorel, M. O. Wascko, W. C. Louis, M. J. Wilking, M. H. Shaevitz, G. B. Mills, R. Dharmapalan, C. Mauger, J. Mousseau, B. T. Fleming, S. K. Linden, B. P. Roe, B. Osmanov, A. Patch, B. C. Brown, and Z. Djurcic

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Experiment (hep-ex), Pion, Antimatter, High Energy Physics::Experiment, Neutrino, Energy (signal processing), Lepton
Abstract

Two independent methods are employed to measure the neutrino flux of the anti-neutrino-mode beam observed by the MiniBooNE detector. The first method compares data to simulated event rates in a high purity $\numu$ induced charged-current single $\pip$ (CC1$\pip$) sample while the second exploits the difference between the angular distributions of muons created in $\numu$ and $\numub$ charged-current quasi-elastic (CCQE) interactions. The results from both analyses indicate the prediction of the neutrino flux component of the pre-dominately anti-neutrino beam is over-estimated - the CC1$\pip$ analysis indicates the predicted $\numu$ flux should be scaled by $0.76 \pm 0.11$, while the CCQE angular fit yields $0.65 \pm 0.23$. The energy spectrum of the flux prediction is checked by repeating the analyses in bins of reconstructed neutrino energy, and the results show that the spectral shape is well modeled. These analyses are a demonstration of techniques for measuring the neutrino contamination of anti-neutrino beams observed by future non-magnetized detectors., 15 pages, 7 figures, published in Physical Review D, latest version reflects changes from referee comments

Published
2011

29. Measurement of the neutrino neutral-current elastic differential cross section on mineral oil atEν∼1 GeV

Author

B. Osmanov, I. Kourbanis, D. Perevalov, J. A. Green, D. A. Finley, J. L. Raaf, R. A. Johnson, G. Karagiorgi, P. Nienaber, W. C. Louis, C. E. Anderson, M. Tzanov, F. G. Garcia, Kendall Mahn, E. D. Zimmerman, M. Soderberg, I. Stancu, E. Hawker, C. D. Moore, G. P. Zeller, W. Marsh, H. A. Tanaka, H. Ray, C. Green, Janet Conrad, T. L. Hart, F. Mills, R. G. Van de Water, M. H. Shaevitz, Teppei Katori, Y. L. Liu, J. Cao, R. J. Stefanski, V. T. McGary, D. W. Schmitz, L. Coney, S. Koutsoliotas, Rex Tayloe, G. B. Mills, J. A. Nowak, R. B. Patterson, D. H. White, Z. Djurcic, David Smith, M. O. Wascko, P. H. Kasper, A. D. Russell, B. C. Brown, R. Schirato, G. T. Garvey, Alexis A. Aguilar-Arevalo, R. Ford, L. Bugel, T. Kobilarcik, F. C. Shoemaker, R. H. Nelson, Z. Pavlovic, C. C. Polly, A. Curioni, M. Sung, J. Spitz, M. Sorel, B. T. Fleming, D. C. Cox, S. K. Linden, E.J. Prebys, G. McGregor, S. Ouedraogo, Panagiotis Spentzouris, J. Grange, A. O. Bazarko, J. Mousseau, E. M. Laird, R. Dharmapalan, R. Imlay, Jocelyn Monroe, W. Metcalf, H. J. Yang, S. J. Brice, P. D. Meyers, C. Mauger, M. J. Wilking, B. P. Roe, V. D. Sandberg, and J. M. Link

Subjects
Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Form factor (quantum field theory), Nuclear physics, Baryon, MiniBooNE, Neutrino, Nuclear Experiment, Nucleon, Energy (signal processing), Lepton
Abstract

We report a measurement of the flux-averaged neutral-current elastic differential cross section for neutrinos scattering on mineral oil (CH{sub 2}) as a function of four-momentum transferred squared, Q{sup 2}. It is obtained by measuring the kinematics of recoiling nucleons with kinetic energy greater than 50 MeV which are readily detected in MiniBooNE. This differential cross-section distribution is fit with fixed nucleon form factors apart from an axial mass M{sub A} that provides a best fit for M{sub A}=1.39{+-}0.11 GeV. Using the data from the charged-current neutrino interaction sample, a ratio of neutral-current to charged-current quasielastic cross sections as a function of Q{sup 2} has been measured. Additionally, single protons with kinetic energies above 350 MeV can be distinguished from neutrons and multiple nucleon events. Using this marker, the strange quark contribution to the neutral-current axial vector form factor at Q{sup 2}=0, {Delta}s, is found to be {Delta}s=0.08{+-}0.26.

Published
2010
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30. Event Excess in the MiniBooNE Search forν¯μ→ν¯eOscillations

Author

M. Sorel, C. E. Anderson, W. C. Louis, M. O. Wascko, M. Tzanov, F. G. Garcia, L. Bugel, M. J. Wilking, C. C. Polly, Z. Pavlovic, Alexis A. Aguilar-Arevalo, R. Ford, J. Mousseau, J. A. Green, H. Ray, R. G. Van de Water, T. Kobilarcik, G. P. Zeller, J. A. Nowak, R. Imlay, C. D. Moore, D. H. White, S. J. Brice, A. D. Russell, R. Dharmapalan, R. H. Nelson, G. Karagiorgi, Janet Conrad, P. Nienaber, R. A. Johnson, Rex Tayloe, E. D. Zimmerman, M. H. Shaevitz, C. Mauger, R. J. Stefanski, J. Mirabal, B. P. Roe, W. Metcalf, V. T. Nguyen, R. Schirato, G. T. Garvey, J. Spitz, W. Marsh, B. T. Fleming, S. K. Linden, Teppei Katori, D. Perevalov, Kendall Mahn, J. Grange, G. B. Mills, B. Osmanov, Z. Djurcic, B. C. Brown, and I. Stancu

Subjects
Nuclear physics, MiniBooNE, Physics, Particle physics, Antiparticle, Antimatter, General Physics and Astronomy, Neutrino, Neutrino oscillation, Particle identification, Energy (signal processing), Lepton
Abstract

The MiniBooNE experiment at Fermilab reports results from a search for {nu}{sub {mu}{yields}{nu}e} oscillations, using a data sample corresponding to 5.66x10{sup 20} protons on target. An excess of 20.9{+-}14.0 events is observed in the energy range 475

Published
2010
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31. Event excess in the MiniBooNE search for ¯νμ→¯νe oscillations

Author

A A, Aguilar-Arevalo, C E, Anderson, S J, Brice, B C, Brown, L, Bugel, J M, Conrad, R, Dharmapalan, Z, Djurcic, B T, Fleming, R, Ford, F G, Garcia, G T, Garvey, J, Mirabal, J, Grange, J A, Green, R, Imlay, R A, Johnson, G, Karagiorgi, T, Katori, T, Kobilarcik, S K, Linden, W C, Louis, K B M, Mahn, W, Marsh, C, Mauger, W, Metcalf, G B, Mills, C D, Moore, J, Mousseau, R H, Nelson, V, Nguyen, P, Nienaber, J A, Nowak, B, Osmanov, Z, Pavlovic, D, Perevalov, C C, Polly, H, Ray, B P, Roe, A D, Russell, R, Schirato, M H, Shaevitz, M, Sorel, J, Spitz, I, Stancu, R J, Stefanski, R, Tayloe, M, Tzanov, R G, Van de Water, M O, Wascko, D H, White, M J, Wilking, G P, Zeller, and E D, Zimmerman

Abstract

The MiniBooNE experiment at Fermilab reports results from a search for ¯ν_{μ}→¯ν_{e} oscillations, using a data sample corresponding to 5.66×10²⁰ protons on target. An excess of 20.9±14.0 events is observed in the energy range 475E_{ν}^{QE}1250 MeV, which, when constrained by the observed ¯ν_{μ} events, has a probability for consistency with the background-only hypothesis of 0.5%. On the other hand, fitting for ¯ν_{μ}→¯ν_{e} oscillations, the best-fit point has a χ² probability of 8.7%. The data are consistent with ¯ν_{μ}→¯ν_{e} oscillations in the 0.1 to 1.0 eV² Δm² range and with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector at Los Alamos National Laboratory.

Published
2010

32. Publisher’s Note: Measurement of the Ratio of theνμCharged-Current Single-Pion Production to Quasielastic Scattering with a 0.8 GeV Neutrino Beam on Mineral Oil [Phys. Rev. Lett.103, 081801 (2009)]

Author

A. A. Aguilar-Arevalo, C. E. Anderson, A. O. Bazarko, S. J. Brice, B. C. Brown, L. Bugel, J. Cao, L. Coney, J. M. Conrad, D. C. Cox, A. Curioni, Z. Djurcic, D. A. Finley, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, C. Green, J. A. Green, T. L. Hart, E. Hawker, R. Imlay, R. A. Johnson, G. Karagiorgi, P. Kasper, T. Katori, T. Kobilarcik, I. Kourbanis, S. Koutsoliotas, E. M. Laird, S. K. Linden, J. M. Link, Y. Liu, W. C. Louis, K. B. M. Mahn, W. Marsh, V. T. McGary, G. McGregor, W. Metcalf, P. D. Meyers, F. Mills, G. B. Mills, J. Monroe, C. D. Moore, R. H. Nelson, P. Nienaber, J. A. Nowak, B. Osmanov, S. Ouedraogo, R. B. Patterson, D. Perevalov, C. C. Polly, E. Prebys, J. L. Raaf, H. Ray, B. P. Roe, A. D. Russell, V. Sandberg, R. Schirato, D. Schmitz, M. H. Shaevitz, F. C. Shoemaker, D. Smith, M. Soderberg, M. Sorel, P. Spentzouris, J. Spitz, I. Stancu, R. J. Stefanski, M. Sung, H. A. Tanaka, R. Tayloe, M. Tzanov, R. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, H. J. Yang, G. P. Zeller, and E. D. Zimmerman

Subjects
Physics, Nuclear physics, Nuclear reaction, Quasielastic scattering, Particle physics, Pion, Scattering, General Physics and Astronomy, Neutrino, Energy source, Charged current, Lepton
Published
2010
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33. Measurement ofνμandν¯μinduced neutral current singleπ0production cross sections on mineral oil atEν∼O(1 GeV)

Author

W. C. Louis, T. Kobilarcik, Z. Pavlovic, D. C. Cox, G. McGregor, F. Mills, M. Soderberg, L. Coney, F. C. Shoemaker, S. J. Brice, G. Karagiorgi, Janet Conrad, G. P. Zeller, J. Grange, P. Nienaber, D. H. White, Rex Tayloe, J. A. Green, J. L. Raaf, W. Marsh, A. D. Russell, E. Hawker, R. J. Stefanski, Y. Liu, B. Osmanov, C. C. Polly, H. Ray, R. G. Van de Water, R. A. Johnson, D. W. Schmitz, J. A. Nowak, Teppei Katori, Jun Cao, Z. Djurcic, I. Stancu, I. Kourbanis, D. Perevalov, R. Imlay, Alexis A. Aguilar-Arevalo, M. Sorel, David Smith, L. Bugel, Kendall Mahn, G. B. Mills, A. O. Bazarko, D. A. Finley, C. D. Moore, H. A. Tanaka, V. T. McGary, T. L. Hart, H. J. Yang, Panagiotis Spentzouris, B. C. Brown, M. H. Shaevitz, R. B. Patterson, A. Curioni, M. Sung, B. T. Fleming, S. K. Linden, E. D. Zimmerman, S. Koutsoliotas, S. Ouedraogo, E.J. Prebys, M. O. Wascko, R. H. Nelson, C. E. Anderson, M. Tzanov, F. G. Garcia, J. Spitz, R. Schirato, G. T. Garvey, R. Ford, J. Mousseau, C. Green, P. H. Kasper, E. M. Laird, B. P. Roe, W. Metcalf, M. J. Wilking, Jocelyn Monroe, V. D. Sandberg, J. M. Link, P. D. Meyers, C. Mauger, and J. Gonzales

Subjects
MiniBooNE, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Meson, Hadron, Production (computer science), Neutrino, Nucleon, Energy (signal processing), Lepton
Abstract

MiniBooNE reports the first absolute cross sections for neutral current single {pi}{sup 0} production on CH{sub 2} induced by neutrino and antineutrino interactions measured from the largest sets of NC {pi}{sup 0} events collected to date. The principal result consists of differential cross sections measured as functions of {pi}{sup 0} momentum and {pi}{sup 0} angle averaged over the neutrino flux at MiniBooNE. We find total cross sections of (4.76 {+-} 0.05{sub stat} {+-} 0.40{sub sys}) x 10{sup -40} cm{sup 2}/nucleon at a mean energy of = 808 MeV and (1.48 {+-} 0.05{sub stat} {+-} 0.14{sub sys}) x 10{sup -40} cm{sup 2}/nucleon at a mean energy of = 664 MeV for {nu}{sub {mu}} and {bar {nu}}{sub {mu}} induced production, respectively. In addition, we have included measurements of the neutrino and antineutrino total cross sections for incoherent exclusive NC 1{pi}{sup 0} production corrected for the effects of final state interactions to compare to prior results.

Published
2010
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34. Search for Core-Collapse Supernovae using the MiniBooNE Neutrino Detector

Author

A. A. Aguilar-Arevalo, C. E. Anderson, A. O. Bazarko, S. J. Brice, B. C. Brown, L. Bugel, J. Cao, L. Coney, J. M. Conrad, D. C. Cox, A. Curioni, Z. Djurcic, D. A. Finley, M. Fisher, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, J. Grange, C. Green, J. A. Green, T. L. Hart, E. Hawker, R. Imlay, R. A. Johnson, G. Karagiorgi, P. Kasper, T. Katori, T. Kobilarcik, I. Kourbanis, S. Koutsoliotas, E. M. Laird, S. K. Linden, J. M. Link, Y. Liu, W. C. Louis, K. B. M. Mahn, W. Marsh, C. Mauger, V. T. McGary, G. McGregor, W. Metcalf, P. D. Meyers, F. Mills, G. B. Mills, J. Monroe, C. D. Moore, J. Mousseau, R. H. Nelson, P. Nienaber, J. A. Nowak, B. Osmanov, S. Ouedraogo, R. B. Patterson, Z. Pavlovic, D. Perevalov, C. C. Polly, E. Prebys, J. L. Raaf, H. Ray, B. P. Roe, A. D. Russell, V. Sandberg, R. Schirato, D. Schmitz, M. H. Shaevitz, F. C. Shoemaker, D. Smith, M. Soderberg, M. Sorel, P. Spentzouris, J. Spitz, I. Stancu, R. J. Stefanski, M. Sung, H. A. Tanaka, R. Tayloe, M. Tzanov, R. G. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, H. J. Yang, G. P. Zeller, and E. D. Zimmerman

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Nuclear and High Energy Physics, Research Groups and Centres\Physics\Low Temperature Physics, Faculty of Science\Physics, Milky Way, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, MiniBooNE, Supernova, Neutrino detector, Gravitational collapse, High Energy Physics::Experiment, Variable star, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract

We present a search for core-collapse supernovae in the Milky Way galaxy, using the MiniBooNE neutrino detector. No evidence is found for core-collapse supernovae occurring in our Galaxy in the period from December 14, 2004 to July 31, 2008, corresponding to 98% live time for collection. We set a limit on the core-collapse supernova rate out to a distance of 13.4 kpc to be less than 0.69 supernovae per year at 90% C. L., We acknowledge the support of Fermilab, the Department of Energy, and the National Science Foundation. We are grateful to John Beacom for his valuable insight and advice. We thank Alessandro Mirizzi, Georg G. Raffelt, and Pasquale D. Serpico for providing the probability distribution for the Milky Way.

Published
2010

35. Search for Electron Antineutrino Appearance at theΔm2∼1 eV2Scale

Author

Janet Conrad, R. J. Stefanski, R. Ford, C. Green, W. Metcalf, R. H. Nelson, M. H. Shaevitz, D. Perevalov, L. Bugel, T. Kobilarcik, V. T. McGary, G. B. Mills, B. Osmanov, B. C. Brown, J. Gonzales, G. P. Zeller, I. Stancu, Kendall Mahn, C. C. Polly, W. Marsh, Z. Djurcic, B. P. Roe, Rex Tayloe, J. Grange, G. Karagiorgi, A. D. Russell, M. J. Wilking, P. Nienaber, Teppei Katori, J. A. Green, H. Ray, G. T. Garvey, D. H. White, R. G. Van de Water, M. O. Wascko, J. A. Nowak, Z. Pavlovic, R. A. Johnson, Alexis A. Aguilar-Arevalo, C. D. Moore, J. Spitz, C. Mauger, E. D. Zimmerman, S. J. Brice, B. T. Fleming, S. K. Linden, M. Sorel, W. C. Louis, R. Imlay, C. E. Anderson, M. Tzanov, F. G. Garcia, and J. Mousseau

Subjects
Nuclear physics, Physics, Nuclear reaction, MiniBooNE, Particle physics, Liquid Scintillator Neutrino Detector, Quasielastic scattering, General Physics and Astronomy, Neutrino, Nuclear Experiment, Neutrino oscillation, Electron neutrino, Lepton
Abstract

The MiniBooNE Collaboration reports initial results from a search for nu{sub m}u->nu{sub e} oscillations. A signal-blind analysis was performed using a data sample corresponding to 3.39x10{sup 20} protons on target. The data are consistent with background prediction across the full range of neutrino energy reconstructed assuming quasielastic scattering, 200

Published
2009
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36. Improved limit on the muon electric dipole moment

Author

L. Duong, Rasmus Larsen, H. Deng, Yannis K. Semertzidis, C. J. G. Onderwater, D. Winn, Satish Dhawan, J. M. Paley, C. Timmermans, M. Sossong, J. Pretz, G.V. Fedotovich, M. Deile, P. M. Shagin, Yu. M. Shatunov, J. P. Miller, T. Qian, F. Krienen, X. Huang, G. T. Danby, N.M. Ryskulov, B. L. Roberts, P. Cushman, R. Prigl, J. Mi, V. P. Druzhinin, Yuri F. Orlov, R. McNabb, D. Kawall, Wuzheng Meng, Y. Mizumachi, S. Sedykh, D. Urner, I. Kronkvist, D. Nikas, D. Zimmerman, M. Grosse-Perdekamp, Q. Peng, J. Kindem, B. Bousquet, E. P. Sichtermann, M. F. Hare, D.N. Grigoriev, C. C. Polly, H. N. Brown, Klaus-Peter Jungmann, E. P. Solodov, O. Rind, G. Bunce, A. Lam, I. Logashenko, D. W. Hertzog, P. von Walter, A. Grossmann, Y.Y. Lee, Masahiko Iwasaki, B.I. Khazin, Frederick Gray, William Deninger, M. Kawamura, D. Warburton, V. W. Hughes, Lawrence Sulak, G. W. Bennett, Alexei Trofimov, E. Efstathiadis, A. Steinmetz, William Morse, F. J. M. Farley, G. zu Putlitz, S. I. Redin, R. M. Carey, A. Yamamoto, C. S. Özben, S. Giron, P. T. Debevec, and Research unit Nuclear & Hadron Physics

Subjects
Physics, Nuclear and High Energy Physics, Muon, Anomalous magnetic dipole moment, Physics::Instrumentation and Detectors, POSITIVE MUON, G-2, FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Electric dipole moment, Precession, Physics::Accelerator Physics, High Energy Physics::Experiment, Combined result, Limit (mathematics), ANOMALOUS MAGNETIC-MOMENT, Spin (physics), Storage ring
Abstract

Three independent searches for an electric dipole moment (EDM) of the positive and negative muons have been performed, using spin precession data from the muon g-2 storage ring at Brookhaven National Laboratory. Details on the experimental apparatus and the three analyses are presented. Since the individual results on the positive and negative muon, as well as the combined result, d=-0.1(0.9)E-19 e-cm, are all consistent with zero, we set a new muon EDM limit, |d| < 1.9E-19 e-cm (95% C.L.). This represents a factor of 5 improvement over the previous best limit on the muon EDM., 19 pages, 15 figures, 7 tables

Published
2009

37. Measurement of the Ratio of theνμCharged-Current Single-Pion Production to Quasielastic Scattering with a 0.8 GeV Neutrino Beam on Mineral Oil

Author

A. A. Aguilar-Arevalo, C. E. Anderson, A. O. Bazarko, S. J. Brice, B. C. Brown, L. Bugel, J. Cao, L. Coney, J. M. Conrad, D. C. Cox, A. Curioni, Z. Djurcic, D. A. Finley, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, C. Green, J. A. Green, T. L. Hart, E. Hawker, R. Imlay, R. A. Johnson, G. Karagiorgi, P. Kasper, T. Katori, T. Kobilarcik, I. Kourbanis, S. Koutsoliotas, E. M. Laird, S. K. Linden, J. M. Link, Y. Liu, W. C. Louis, K. B. M. Mahn, W. Marsh, V. T. McGary, G. McGregor, W. Metcalf, P. D. Meyers, F. Mills, G. B. Mills, J. Monroe, C. D. Moore, R. H. Nelson, P. Nienaber, J. A. Nowak, B. Osmanov, S. Ouedraogo, R. B. Patterson, D. Perevalov, C. C. Polly, E. Prebys, J. L. Raaf, H. Ray, B. P. Roe, A. D. Russell, V. Sandberg, R. Schirato, D. Schmitz, M. H. Shaevitz, F. C. Shoemaker, D. Smith, M. Soderberg, M. Sorel, P. Spentzouris, J. Spitz, I. Stancu, R. J. Stefanski, M. Sung, H. A. Tanaka, R. Tayloe, M. Tzanov, R. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, H. J. Yang, G. P. Zeller, and E. D. Zimmerman

Subjects
Nuclear physics, Physics, MiniBooNE, Particle physics, Muon, Pion, Hadron, General Physics and Astronomy, High Energy Physics::Experiment, Neutrino, Energy source, Charged current, Lepton
Abstract

Charged current single pion production (CC{pi}{sup +}) and charged current quasi-elastic scattering (CCQE) are the most abundant interaction types for neutrinos at energies around 1 GeV, a region of great interest to oscillation experiments. The cross-sections for these processes, however, are not well understood in this energy range. This dissertation presents a measurement of the ratio of CC{pi}{sup +} to CCQE cross-sections for muon neutrinos on mineral oil (CH{sub 2}) in the MiniBooNE experiment. The measurement is presented here both with and without corrections for hadronic re-interactions in the target nucleus and is given as a function of neutrino energy in the range 0.4 GeV < E{sub {nu}} < 2.4 GeV. With more than 46,000 CC{pi}{sup +} events collected in MiniBooNE, and with a fractional uncertainty of roughly 11% in the region of highest statistics, this measurement represents a dramatic improvement in statistics and precision over previous CC{pi}{sup +} and CCQE measurements.

Published
2009
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38. Measurement ofνμandνeEvents in an Off-Axis Horn-Focused Neutrino Beam

Author

P. D. Meyers, B. P. Roe, Jocelyn Monroe, I. Kourbanis, A. O. Bazarko, T. Kobilarcik, V. D. Sandberg, Alexis A. Aguilar-Arevalo, Z. Pavlovic, J. M. Link, D. A. Finley, Janet Conrad, D. C. Cox, D. H. White, B. Viren, P. H. Kasper, G. McGregor, M. Sorel, G. Karagiorgi, C. D. Moore, R. Ford, J. A. Green, Brajesh C Choudhary, D. Perevalov, C. Green, P. Nienaber, J. L. Raaf, E. M. Laird, H. A. Tanaka, J. Hylen, S. J. Brice, L. Loiacono, J. K. Nelson, R. B. Patterson, H. R. Gallagher, I. Stancu, F. Mills, C. E. Anderson, Kendall Mahn, G. P. Zeller, D. A. Harris, R. A. Johnson, E. Hawker, W. Metcalf, M. Tzanov, F. G. Garcia, M. J. Wilking, R. Imlay, M. O. Wascko, D. W. Schmitz, C. C. Polly, Panagiotis Spentzouris, R. Zwaska, T. L. Hart, R. H. Nelson, R. J. Stefanski, W. Marsh, M. H. Shaevitz, S. Koutsoliotas, A. Marchionni, A. Curioni, P. Adamson, E. D. Zimmerman, M. Sodeberg, Z. Djurcic, Y. L. Liu, Francisco Yumiceva, P. Vahle, M. Sung, W. C. Louis, M. D. Messier, H. Ray, S. Ouedraogo, R. G. Van de Water, Teppei Katori, J. A. Nowak, H. J. Yang, V. T. Nguyen, David Smith, L. Bugel, B. C. Brown, Jun Cao, M. Bishai, G. B. Mills, Rex Tayloe, Sacha E Kopp, F. C. Shoemaker, R. Schirato, G. T. Garvey, B. T. Fleming, S. K. Linden, W. Smart, A. D. Russell, E.J. Prebys, and L. Coney

Subjects
Physics, Particle physics, Physics::Instrumentation and Detectors, General Physics and Astronomy, NuMI, Nuclear physics, MiniBooNE, Pion, Beamline, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Neutrino, Beam (structure), Charged current
Abstract

We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beam line at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle (6.3°) with respect to the NuMI beam axis. Samples of charged-current quasielastic νμ and νe 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.

Published
2009
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39. Neutrino flux prediction at MiniBooNE

Author

S. Koutsoliotas, P. S. Martin, V. T. Nguyen, Janet Conrad, G. P. Zeller, I. Stancu, D. C. Cox, Panagiotis Spentzouris, G. Karagiorgi, P. Nienaber, D. H. White, V. D. Sandberg, G. McGregor, R. J. Stefanski, D. Perevalov, L. Coney, A. O. Bazarko, R. Ford, A. D. Russell, J. M. Link, C. Green, W. Metcalf, B. T. Fleming, J. L. Raaf, H. J. Yang, M. Sorel, F. Mills, R. H. Nelson, T. L. Hart, Rex Tayloe, Kendall Mahn, E. M. Laird, M. H. Shaevitz, Z. Djurcic, R. B. Patterson, S. K. Linden, E. Hawker, C. C. Polly, W. Marsh, H. Ray, M. Soderberg, D. A. Finley, R. G. Van de Water, D. W. Schmitz, E.J. Prebys, J. A. Nowak, J. A. Green, B. P. Roe, I. Kourbanis, W. C. Louis, Teppei Katori, M. O. Wascko, David Smith, L. Bugel, C. D. Moore, T. Kobilarcik, H. A. Tanaka, B. C. Brown, R. A. Johnson, Alexis A. Aguilar-Arevalo, S. J. Brice, Jun Cao, P. D. Meyers, Jocelyn Monroe, G. B. Mills, F. C. Shoemaker, A. Curioni, M. Sung, G. T. Garvey, S. Ouedraogo, R. Schirato, M. J. Wilking, C. E. Anderson, M. Tzanov, F. G. Garcia, E. D. Zimmerman, Y. L. Liu, P. H. Kasper, and R. Imlay

Subjects
Physics, Research Groups and Centres\Physics\Low Temperature Physics, Nuclear and High Energy Physics, Particle physics, Meson, Faculty of Science\Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics - Experiment, Massless particle, MiniBooNE, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment, Neutrino oscillation, Lepton
Abstract

The booster neutrino experiment (MiniBooNE) searches for nu(mu)->nu(e) oscillations using the O(1 GeV) neutrino beam produced by the booster synchrotron at the Fermi National Accelerator Laboratory). The booster delivers protons with 8 GeV kinetic energy (8.89 GeV/c momentum) to a beryllium target, producing neutrinos from the decay of secondary particles in the beam line. We describe the Monte Carlo simulation methods used to estimate the flux of neutrinos from the beam line incident on the MiniBooNE detector for both polarities of the focusing horn. The simulation uses the Geant4 framework for propagating particles, accounting for electromagnetic processes and hadronic interactions in the beam line materials, as well as the decay of particles. The absolute double differential cross sections of pion and kaon production in the simulation have been tuned to match external measurements, as have the hadronic cross sections for nucleons and pions. The statistical precision of the flux predictions is enhanced through reweighting and resampling techniques. Systematic errors in the flux estimation have been determined by varying parameters within their uncertainties, accounting for correlations where appropriate., The MiniBooNE collaboration acknowledges support from the Department of Energy and the National Science Foundation of the United States. We are grateful to Fermilab for hosting the experiment and thank the Accelerator Division for the excellent accelerator performance. We thank Los Alamos National Laboratory for LDRD funding. We acknowledge Bartoszek Engineering for the design of the focusing horn. This research was done using resources provided by the Open Science Grid, which is supported by the NSF and DOE-SC. We also acknowledge the use of the LANL PINK cluster and CONDOR software in the analysis of the data.

Published
2009
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40. Search for electron antineutrino appearance at the deltam(2) approximately 1 eV(2) Scale

Author

A A, Aguilar-Arevalo, C E, Anderson, S J, Brice, B C, Brown, L, Bugel, J M, Conrad, Z, Djurcic, B T, Fleming, R, Ford, F G, Garcia, G T, Garvey, J, Gonzales, J, Grange, C, Green, J A, Green, R, Imlay, R A, Johnson, G, Karagiorgi, T, Katori, T, Kobilarcik, S K, Linden, W C, Louis, K B M, Mahn, W, Marsh, C, Mauger, V T, McGary, W, Metcalf, G B, Mills, C D, Moore, J, Mousseau, R H, Nelson, P, Nienaber, J A, Nowak, B, Osmanov, Z, Pavlovic, D, Perevalov, C C, Polly, H, Ray, B P, Roe, A D, Russell, M H, Shaevitz, M, Sorel, J, Spitz, I, Stancu, R J, Stefanski, R, Tayloe, M, Tzanov, R G, Van de Water, M O, Wascko, D H, White, M J, Wilking, G P, Zeller, and E D, Zimmerman

Abstract

The MiniBooNE Collaboration reports initial results from a search for nu(mu)--nu(e) oscillations. A signal-blind analysis was performed using a data sample corresponding to 3.39x10(20) protons on target. The data are consistent with background prediction across the full range of neutrino energy reconstructed assuming quasielastic scattering, 200E(nu)(QE)3000 MeV: 144 electronlike events have been observed in this energy range, compared to an expectation of 139.2+/-17.6 events. No significant excess of events has been observed, both at low energy, 200-475 MeV, and at high energy, 475-1250 MeV. The data are inconclusive with respect to antineutrino oscillations suggested by data from the Liquid Scintillator Neutrino Detector at Los Alamos National Laboratory.

Published
2009

41. Unexplained Excess of Electronlike Events from a 1-GeV Neutrino Beam

Author

Y. Liu, D. H. White, G. Karagiorgi, R. H. Nelson, M. J. Wilking, W. Marsh, D. W. Schmitz, C.D. Moore, D. C. Cox, Daniel Finley, R. B. Patterson, Michael H. Shaevitz, Peter Daniel Meyers, G. McGregor, T. Kobilarcik, G. B. Mills, D. Perevalov, B. P. Roe, C. C. Polly, G. P. Zeller, V. T. Nguyen, Haijun Yang, P. Nienaber, R. Imlay, Teppei Katori, S. J. Brice, R. Ford, C. Green, David Smith, I. Kourbanis, H. A. Tanaka, M. O. Wascko, L. Bugel, R. Tayloe, J. A. Green, B. C. Brown, I. Stancu, E. D. Zimmerman, F. C. Shoemaker, Kendall Mahn, A. D. Russell, C. E. Anderson, Janet Conrad, J. L. Raaf, M. Tzanov, F. G. Garcia, R. Schirato, B. T. Fleming, S. K. Linden, R. J. Stefanski, V. D. Sandberg, Alexis A. Aguilar-Arevalo, E.J. Prebys, F. Mills, R. A. Johnson, Jun Cao, M. Sodeberg, M. Sung, Z. Djurcic, G. T. Garvey, T. L. Hart, S. Ouedraogo, M. Sorel, S. Koutsoliotas, E. Laird, A. O. Bazarko, P. H. Kasper, J. M. Link, P. Spentzouris, William C. Louis, E. Hawker, H. Ray, R. G. Van de Water, J. A. Nowak, W. Metcalf, Jocelyn Monroe, A. Curioni, and L. Coney

Subjects
Physics, Particle physics, Scattering, Hadron, Astrophysics (astro-ph), General Physics and Astronomy, FOS: Physical sciences, Astrophysics, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Neutrino, Nucleon, Neutrino oscillation, Energy (signal processing), Lepton
Abstract

The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With 6.46 x 10(20) protons on target, 544 electronlike events are observed in this energy range, compared to an expectation of 415.2 +/- 43.4 events, corresponding to an excess of 128.8 +/- 20.4 +/- 38.3 events. The shape of the excess in several kinematic variables is consistent with being due to either nu(e) and (nu) over bar (e) charged-current scattering or nu(mu) neutral-current scattering with a photon in the final state. No significant excess of events is observed in the reconstructed neutrino energy range from 475 to 1250 MeV, where 408 events are observed compared to an expectation of 385.9 +/- 35.7 events., We acknowledge the support of Fermilab, the Department of Energy, and the National Science Foundation, and we acknowledge Los Alamos National Laboratory for LDRD funding. In addition, we acknowledge theoretical input from Tina Leitner and Ulrich Mosel on the Delta -> N gamma background.

Published
2009

42. Search for Muon Neutrino and Antineutrino Disappearance in MiniBooNE

Author

E. Hawker, W. Metcalf, R. Imlay, R. B. Patterson, H. Ray, M. J. Wilking, R. G. Van de Water, Y. Liu, M. O. Wascko, G. Karagiorgi, J. A. Nowak, I. Stancu, T. Kobilarcik, D. Perevalov, Jun Cao, S. Koutsoliotas, D. W. Schmitz, C. E. Anderson, B. P. Roe, G. P. Zeller, M. Tzanov, F. G. Garcia, F. Mills, B. Osmanov, I. Kourbanis, A. O. Bazarko, Peter Daniel Meyers, A. D. Russell, R. Schirato, P. H. Kasper, E. Laird, Z. Djurcic, Z. Pavlovic, S. J. Brice, H. A. Tanaka, J. A. Green, J. Mousseau, William C. Louis, J. L. Raaf, Jocelyn Monroe, David Smith, L. Bugel, Haijun Yang, V. D. Sandberg, E. D. Zimmerman, Alexis A. Aguilar-Arevalo, R. Tayloe, Janet Conrad, R. A. Johnson, R. Ford, B. C. Brown, C. Green, R. J. Stefanski, J. Grange, M. Sung, G. T. Garvey, Jonathan M. Link, Kendall Mahn, C.D. Moore, D. C. Cox, B. T. Fleming, G. McGregor, S. Ouedraogo, S. K. Linden, G. B. Mills, W. Marsh, T. L. Hart, E.J. Prebys, Daniel Finley, R. H. Nelson, P. Spentzouris, Teppei Katori, M. Sorel, A. Curioni, F. C. Shoemaker, J. Spitz, Michael H. Shaevitz, L. Coney, P. Nienaber, M. Soderberg, C. Mauger, D. H. White, C. C. Polly, and V. T. McGary

Subjects
Physics, Antiparticle, Particle physics, General Physics and Astronomy, FOS: Physical sciences, Elementary particle, High Energy Physics - Experiment, MiniBooNE, Massless particle, Nuclear physics, High Energy Physics - Experiment (hep-ex), Antimatter, Neutrino, Energy (signal processing), Lepton
Abstract

The MiniBooNE Collaboration reports a search for nu(mu) and nu(mu) disappearance in the Delta m(2) region of 0.5-40 eV(2). These measurements are important for constraining models with extra types of neutrinos, extra dimensions, and CPT violation. Fits to the shape of the nu(mu) and nu(mu) energy spectra reveal no evidence for disappearance at the 90% confidence level (C.L.) in either mode. The test of nu(mu) disappearance probes a region below Delta m(2)=40 eV(2) never explored before., We acknowledge the support of Fermilab, the Department of Energy, and the National Science Foundation. We thank Los Alamos National Laboratory for LDRD funding. We also acknowledge the use of Condor software in the analysis the data.

Published
2009

43. Measurement of numicro and nue events in an off-axis horn-focused neutrino beam

Author

P, Adamson, A A, Aguilar-Arevalo, C E, Anderson, A O, Bazarko, M, Bishai, S J, Brice, B C, Brown, L, Bugel, J, Cao, B C, Choudhary, L, Coney, J M, Conrad, D C, Cox, A, Curioni, Z, Djurcic, D A, Finley, B T, Fleming, R, Ford, H R, Gallagher, F G, Garcia, G T, Garvey, C, Green, J A, Green, D, Harris, T L, Hart, E, Hawker, J, Hylen, R, Imlay, R A, Johnson, G, Karagiorgi, P, Kasper, T, Katori, T, Kobilarcik, S, Kopp, I, Kourbanis, S, Koutsoliotas, E M, Laird, S K, Linden, J M, Link, Y, Liu, L, Loiacono, W C, Louis, A, Marchionni, K B M, Mahn, W, Marsh, G, McGregor, M D, Messier, W, Metcalf, P D, Meyers, F, Mills, G B, Mills, J, Monroe, C D, Moore, J K, Nelson, R H, Nelson, V T, Nguyen, P, Nienaber, J A, Nowak, S, Ouedraogo, R B, Patterson, Z, Pavlovic, D, Perevalov, C C, Polly, E, Prebys, J L, Raaf, H, Ray, B P, Roe, A D, Russell, V, Sandberg, R, Schirato, D, Schmitz, M H, Shaevitz, F C, Shoemaker, W, Smart, D, Smith, M, Sodeberg, M, Sorel, P, Spentzouris, I, Stancu, R J, Stefanski, M, Sung, H A, Tanaka, R, Tayloe, M, Tzanov, P, Vahle, R, Van de Water, B, Viren, M O, Wascko, D H, White, M J, Wilking, H J, Yang, F X, Yumiceva, G P, Zeller, E D, Zimmerman, and R, Zwaska

Abstract

We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beam line at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle (6.3 degrees) with respect to the NuMI beam axis. Samples of charged-current quasielastic numicro and nue 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.

Published
2008

44. Compatibility of high-Δm2νeandν¯eneutrino oscillation searches

Author

I. Stancu, G. P. Zeller, D. W. Schmitz, David Smith, L. Bugel, Jan Conrad, W. C. Louis, B. C. Brown, G. Karagiorgi, Jun Cao, C. C. Polly, G. B. Mills, P. Nienaber, D. C. Cox, I. Kourbanis, G. McGregor, W. Marsh, S. J. Brice, R. H. Nelson, T. L. Hart, A. O. Bazarko, M. H. Shaevitz, E. D. Zimmerman, R. Ford, P. D. Meyers, C. Green, D. A. Finley, M. Soderberg, S. Koutsoliotas, Y. L. Liu, Panagiotis Spentzouris, Teppei Katori, C. D. Moore, Rex Tayloe, J. A. Green, R. L. Imlay, V. T. Nguyen, D. Perevalov, J. L. Raaf, H. A. Tanaka, Z. Djurcic, H. J. Yang, T. Kobilarcik, P. H. Kasper, A. D. Russell, Kendall Mahn, P. Martin, R. A. Johnson, M. Sorel, C. E. Anderson, M. Tzanov, F. G. Garcia, E. Hawker, R. J. Stefanski, Alexis A. Aguilar-Arevalo, R. Schirato, G. T. Garvey, M. Sung, H. Ray, W. Metcalf, M. J. Wilking, R. G. Van de Water, S. Ouedraogo, F. C. Shoemaker, F. Mills, D. H. White, Jocelyn Monroe, R. B. Patterson, A. Curioni, M. O. Wascko, L. Coney, V. D. Sandberg, J. M. Link, B. P. Roe, E. M. Laird, B. T. Fleming, S. K. Linden, and E.J. Prebys

Subjects
Physics, Nuclear and High Energy Physics, Sterile neutrino, Particle physics, Liquid Scintillator Neutrino Detector, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, MiniBooNE, Measurements of neutrino speed, CP violation, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Lepton
Abstract

This article presents the compatibility of experimental data from neutrino oscillation experiments with a high-{delta}m{sup 2} two-neutrino oscillation hypothesis. Data is provided by the Bugey, Karlsruhe Rutherford Medium Energy Neutrino Experiment 2 (KARMEN2), Los Alamos Liquid Scintillator Neutrino Detector (LSND), and MiniBooNE experiments. The LSND, KARMEN2, and MiniBooNE results are 25.36% compatible within a two-neutrino oscillation hypothesis. However, the point of maximal compatibility is found in a region that is excluded by the Bugey data. A joint analysis of all four experiments, performed in the sin{sup 2}2{theta} vs {delta}m{sup 2} region common to all data, finds a maximal compatibility of 3.94%. This result does not account for additions to the neutrino oscillation model from sources such as CP violation or sterile neutrinos.

Published
2008
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45. The MiniBooNE Detector

Author

David Smith, P. H. Kasper, L. Bugel, H. J. Yang, R. B. Patterson, B. C. Brown, M. O. Wascko, J. A. Green, E. Hawker, H. Ray, D. W. Schmitz, E. D. Zimmerman, W. R. Sands, R. G. Van de Water, J. L. Raaf, G. Karagiorgi, C. D. Moore, D. C. Cox, Y. L. Liu, D. Perevalov, P. Nienaber, H. A. Tanaka, G. McGregor, P. Martin, H. O. Meyer, D. H. White, Jun Cao, G. P. Zeller, J. A. Nowak, Kendall Mahn, B. T. Fleming, C. C. Polly, W. Marsh, E. M. Laird, G. B. Mills, A. Curioni, Peter Daniel Meyers, Z. Djurcic, R. Imlay, R. A. Johnson, B. P. Roe, L. Bartoszek, M. Sung, Janet Conrad, G. T. Garvey, M. Sorel, S. Ouedraogo, Teppei Katori, G. Schofield, R. J. Stefanski, V. D. Sandberg, R. Ford, I. Stancu, C. Green, C. E. Anderson, J. M. Link, M. Tzanov, M. J. Wilking, F. G. Garcia, Panagiotis Spentzouris, I. Kourbanis, D. A. Finley, T. L. Hart, W. Metcalf, M. H. Shaevitz, W. C. Louis, T. Kobilarcik, S. J. Brice, Jocelyn Monroe, R. Schirato, Rex Tayloe, A. D. Russell, Alexis A. Aguilar-Arevalo, F. C. Shoemaker, M. Soderberg, A. O. Bazarko, F. Mills, S. Koutsoliotas, S. K. Linden, V. T. Nguyen, E.J. Prebys, L. Coney, and R. H. Nelson

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Parameter space, Physics::Data Analysis, Statistics and Probability, High Energy Physics - Experiment, MiniBooNE, Nuclear physics, High Energy Physics - Experiment (hep-ex), Neutrino detector, Calibration, High Energy Physics::Experiment, Neutrino oscillation, Instrumentation, Order of magnitude
Abstract

The MiniBooNE neutrino detector was designed and built to look for muon-neutrino to electron-neutrino oscillations in the mixing parameter space region where the LSND experiment reported a signal. The MiniBooNE experiment used a beam energy and baseline that were an order of magnitude larger than those of LSND so that the backgrounds and systematic errors would be completely different. This paper provides a detailed description of the design, function, and performance of the MiniBooNE detector., 46 pages, 21 figures

Published
2008

46. Search for Lorentz and CPT violation effects in muon spin precession

Author

A. Lam, G. T. Danby, I. Logashenko, V. P. Druzhinin, Frederick Gray, A. Grossmann, F. Krienen, E. P. Sichtermann, M. F. Hare, G. Bunce, L. Duong, Satish Dhawan, O. Rind, Wuzheng Meng, William Deninger, B.I. Khazin, D. Urner, Lawrence Sulak, J. P. Miller, H. N. Brown, P. Cushman, M. Kawamura, S. Sedykh, P. T. Debevec, F. J. M. Farley, Q. Peng, M. Sossong, B. L. Roberts, D. Nikas, I. Kronkvist, C. S. Özben, G. zu Putlitz, A. Yamamoto, S. I. Redin, J. Kindem, X. Huang, M. Grosse-Perdekamp, D. Warburton, D. Zimmerman, J. Pretz, Yu. M. Shatunov, C. C. Polly, J. M. Paley, D. W. Hertzog, Yuri F. Orlov, D. Kawall, E. P. Solodov, B. Bousquet, N.M. Ryskulov, R. M. Carey, C. J. G. Onderwater, S. Giron, R. Prigl, J. Mi, Y. Mizumachi, V. W. Hughes, T. Qian, G. W. Bennett, C. Timmermans, R. McNabb, William Morse, G.V. Fedotovich, Alexei Trofimov, E. Efstathiadis, A. Steinmetz, Y.Y. Lee, D.N. Grigoriev, P. von Walter, Rasmus Larsen, H. Deng, D. Winn, Yannis K. Semertzidis, M. Deile, P. M. Shagin, Klaus-Peter Jungmann, Masahiko Iwasaki, and KVI - Center for Advanced Radiation Technology

Subjects
Larmor precession, Physics, Particle physics, Muon, Anomalous magnetic dipole moment, CPT symmetry, VALUES, SYMMETRY, HIGHER-DIMENSIONAL THEORIES, General Physics and Astronomy, Muon spin spectroscopy, Omega, STRINGS, INVARIANCE, Standard Model, High Energy Physics - Experiment, High Energy Physics - Phenomenology, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, High Energy Physics::Experiment, ANOMALOUS MAGNETIC-MOMENT, SPACED DATA, Spin-½
Abstract

The spin precession frequency of muons stored in the $(g-2)$ storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were searched for: a nonzero $\Delta\omega_{a}$ (=$\omega_{a}^{\mu^{+}}-\omega_{a}^{\mu^{-}}$); and a sidereal variation of $\omega_{a}^{\mu^{\pm}}$. No significant effect is found, and the following limits on the standard-model extension parameters are obtained: $b_{Z} =-(1.0 \pm 1.1)\times 10^{-23}$ GeV; $(m_{\mu}d_{Z0}+H_{XY}) = (1.8 \pm 6.0 \times 10^{-23})$ GeV; and the 95% confidence level limits $\check{b}_{\perp}^{\mu^{+}}< 1.4 \times 10^{-24}$ GeV and $\check{b}_{\perp}^{\mu^{-}} < 2.6 \times 10^{-24}$ GeV., Comment: 5 pages, 3 figures, submitted to Physical Review Letters, Modified to answer the referees suggestions

Published
2008

47. Improved measurement of the positive-muon lifetime and determination of the Fermi constant

Author

P. T. Debevec, R. McNabb, C. S. Özben, T. I. Banks, K. L. Giovanetti, C. C. Polly, P. A. Zolnierczuk, V. Tishchenko, M. Hance, Kenneth M. Crowe, C. J. G. Onderwater, M. F. Hare, S. M. Clayton, D. M. Webber, Susanne Rath, B. Lauss, Françoise Mulhauser, J. Wasserman, T. P. Gorringe, D. B. Chitwood, S. Dhamija, J. P. Miller, K. R. Lynch, B. L. Roberts, null null, C. S. Oezben, D. W. Hertzog, S. Cheekatmalla, R. M. Carey, B. Kiburg, S. Battu, Q. Peng, M. J. Barnes, I. Logashenko, P. Winter, J. Crnkovic, J. Kunkle, A. Gafarov, W. Earle, P. Kammel, F. Gray, G. D. Wait, and KVI - Center for Advanced Radiation Technology

Subjects
Physics, Coupling, Muon, Physics::Instrumentation and Detectors, FOS: Physical sciences, General Physics and Astronomy, Scintillator, High Energy Physics - Experiment, Nuclear physics, Pseudoscalar, NEUTRON DECAY, High Energy Physics - Experiment (hep-ex), Scintillation counter, RADIATIVE-CORRECTIONS, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nucleon, Nuclear Experiment, Beam (structure), Fermi Gamma-ray Space Telescope
Abstract

The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, tau_mu = 2.197013(24) us, is in excellent agreement with the previous world average. The new world average tau_mu = 2.197019(21) us determines the Fermi constant G_F = 1.166371(6) x 10^-5 GeV^-2 (5 ppm). Additionally, the precision measurement of the positive muon lifetime is needed to determine the nucleon pseudoscalar coupling g_P., As published version (PRL, July 2007)

Published
2007
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48. Search for Electron Neutrino Appearance at theΔm2∼1 eV2Scale

Author

G. P. Zeller, C. D. Moore, H. A. Tanaka, E. M. Laird, P. H. Kasper, E. D. Zimmerman, R. L. Imlay, P. Nienaber, Y. L. Liu, P. Martin, M. Tzanov, D. C. Cox, G. McGregor, J. A. Green, F. G. Garcia, E. Hawker, D. W. Schmitz, D. Perevalov, J. L. Raaf, S. J. Brice, Jan Conrad, I. Stancu, R. H. Nelson, R. A. Johnson, B. T. Fleming, Kendall Mahn, F. C. Shoemaker, E.J. Prebys, C. C. Polly, W. Marsh, A. O. Bazarko, F. Mills, T. L. Hart, S. Koutsoliotas, David Smith, L. Bugel, I. Kourbanis, Panagiotis Spentzouris, M. H. Shaevitz, B. C. Brown, D. A. Finley, Teppei Katori, R. Ford, C. Green, Jun Cao, R. J. Stefanski, Rex Tayloe, T. Kobilarcik, M. J. Wilking, G. B. Mills, Z. Djurcic, M. Sung, S. Ouedraogo, A. Curioni, B. P. Roe, W. C. Louis, L. Coney, V. D. Sandberg, J. M. Link, P. D. Meyers, R. Schirato, G. T. Garvey, H. J. Yang, M. Sorel, H. Ray, R. G. Van de Water, W. Metcalf, Jocelyn Monroe, A. D. Russell, D. H. White, R. B. Patterson, M. O. Wascko, and Alexis A. Aguilar-Arevalo

Subjects
Physics, Nuclear physics, MiniBooNE, Particle physics, Neutrino detector, Solar neutrino, General Physics and Astronomy, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Solar neutrino problem, Neutrino oscillation, Lepton
Abstract

The MiniBooNE Collaboration reports first results of a search for {nu}{sub e} appearance in a {nu}{sub {mu}} beam. With two largely independent analyses, we observe no significant excess of events above the background for reconstructed neutrino energies above 475 MeV. The data are consistent with no oscillations within a two-neutrino appearance-only oscillation model.

Published
2007
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49. Measurement of Muon Neutrino Quasi-Elastic Scattering on Carbon

Author

A. A. Aguilar-Arevalo, A. O. Bazarko, S. J. Brice, B. C. Brown, L. Bugel, J. Cao, L. Coney, J. M. Conrad, D. C. Cox, A. Curioni, Z. Djurcic, D. A. Finley, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, C. Green, J. A. Green, T. L. Hart, E. Hawker, R. Imlay, R. A. Johnson, P. Kasper, T. Katori, T. Kobilarcik, I. Kourbanis, S. Koutsoliotas, E. M. Laird, J. M. Link, Y. Liu, W. C. Louis, K. B. M. Mahn, W. Marsh, P. S. Martin, G. McGregor, W. Metcalf, P. D. Meyers, F. Mills, G. B. Mills, J. Monroe, C. D. Moore, R. H. Nelson, P. Nienaber, S. Ouedraogo, R. B. Patterson, D. Perevalov, C. C. Polly, E. Prebys, J. L. Raaf, H. Ray, B. P. Roe, A. D. Russell, V. Sandberg, R. Schirato, D. Schmitz, M. H. Shaevitz, F. C. Shoemaker, D. Smith, M. Sorel, P. Spentzouris, I. Stancu, R. J. Stefanski, M. Sung, H. A. Tanaka, R. Tayloe, M. Tzanov, R. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, H. J. Yang, G. P. Zeller, and E. D. Zimmerman

Subjects
Physics, Particle physics, General Physics and Astronomy, FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Experiment (hep-ex), Muon neutrino, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment (nucl-ex), Nucleon, Neutrino oscillation, Nuclear Experiment, Charged current, Lepton
Abstract

The observation of neutrino oscillations is clear evidence for physics beyond the standard model. To make precise measurements of this phenomenon, neutrino oscillation experiments, including MiniBooNE, require an accurate description of neutrino charged current quasi-elastic (CCQE) cross sections to predict signal samples. Using a high-statistics sample of muon neutrino CCQE events, MiniBooNE finds that a simple Fermi gas model, with appropriate adjustments, accurately characterizes the CCQE events observed in a carbon-based detector. The extracted parameters include an effective axial mass, M_A^eff = 1.23+/-0.20 GeV, that describes the four-momentum dependence of the axial-vector form factor of the nucleon; and a Pauli-suppression parameter, kappa = 1.019+/-0.011. Such a modified Fermi gas model may also be used by future accelerator-based experiments measuring neutrino oscillations on nuclear targets., 5 pages, 3 figures

Published
2007

50. Search for electron neutrino appearance at the Delta m2 approximately 1 eV2 scale

Author

A A, Aguilar-Arevalo, A O, Bazarko, S J, Brice, B C, Brown, L, Bugel, J, Cao, L, Coney, J M, Conrad, D C, Cox, A, Curioni, Z, Djurcic, D A, Finley, B T, Fleming, R, Ford, F G, Garcia, G T, Garvey, C, Green, J A, Green, T L, Hart, E, Hawker, R, Imlay, R A, Johnson, P, Kasper, T, Katori, T, Kobilarcik, I, Kourbanis, S, Koutsoliotas, E M, Laird, J M, Link, Y, Liu, W C, Louis, K B M, Mahn, W, Marsh, P S, Martin, G, McGregor, W, Metcalf, P D, Meyers, F, Mills, G B, Mills, J, Monroe, C D, Moore, R H, Nelson, P, Nienaber, S, Ouedraogo, R B, Patterson, D, Perevalov, C C, Polly, E, Prebys, J L, Raaf, H, Ray, B P, Roe, A D, Russell, V, Sandberg, R, Schirato, D, Schmitz, M H, Shaevitz, F C, Shoemaker, D, Smith, M, Sorel, P, Spentzouris, I, Stancu, R J, Stefanski, M, Sung, H A, Tanaka, R, Tayloe, M, Tzanov, R, Van de Water, M O, Wascko, D H, White, M J, Wilking, H J, Yang, G P, Zeller, and E D, Zimmerman

Abstract

The MiniBooNE Collaboration reports first results of a search for nu e appearance in a nu mu beam. With two largely independent analyses, we observe no significant excess of events above the background for reconstructed neutrino energies above 475 MeV. The data are consistent with no oscillations within a two-neutrino appearance-only oscillation model.

Published
2007

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