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Title: Measurement of θ 13 in Double Chooz using neutron captures on hydrogen with novel background rejection techniques

Abstract

We observed a measurement of the Double Chooz collaboration and the neutrino mixing angle θ 13 using reactor $$\bar{v}$$ e via the inverse beta decay reaction in which the neutron is captured on hydrogen. Our measurement is based on 462.72 live days data, approximately twice as much data as in the previous such analysis, collected with a detector positioned at an average distance of 1050 m from two reactor cores. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties. Accidental coincidences, the dominant background in this analysis, are suppressed by more than an order of magnitude with respect to our previous publication by a multi-variate analysis. Furthermore, these improvements demonstrate the capability of precise measurement of reactor $$\bar{v}$$ e without gadolinium loading. Spectral distortions from the $$\bar{v}$$ e reactor flux predictions previously reported with the neutron capture on gadolinium events are confirmed in the independent data sample presented here. A value of sin 213= 0.095 0.039 +0.038 (stat+syst) is obtained from a fit to the observed event rate as a function of the reactor power, a method insensitive to the energy spectrum shape. A simultaneous fit of the hydrogen capture events and of the gadolinium capture events yields a measurement of sin 213 = 0.088 ± 0.033(stat+syst).

Authors:
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Publication Date:
Research Org.:
Tokyo Inst. of Technology (Japan). Dept. of Physics; Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
The Double Chooz Collaboration; The Double Chooz collaboration
OSTI Identifier:
1326937
Alternate Identifier(s):
OSTI ID: 1598633
Grant/Contract Number:  
NA0000979; SC0010504
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 1; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; oscillation; electroweak interaction; neutrino detectors and telescopes; flavor physics

Citation Formats

Abe, Y., Appel, S., Abrahão, T., Almazan, H., Alt, C., dos Anjos, J. C., Barriere, J. C., Baussan, E., Bekman, I., Bergevin, M., Bezerra, T. J. C., Bezrukov, L., Blucher, E., Brugière, T., Buck, C., Busenitz, J., Cabrera, A., Camilleri, L., Carr, R., Cerrada, M., Chauveau, E., Chimenti, P., Collin, A. P., Conrad, J. M., Crespo-Anadón, J. I., Crum, K., Cucoanes, A. S., Damon, E., Dawson, J. V., Dhooghe, J., Dietrich, D., Djurcic, Z., Dracos, M., Etenko, A., Fallot, M., von Feilitzsch, F., Felde, J., Fernandes, S. M., Fischer, V., Franco, D., Franke, M., Furuta, H., Gil-Botella, I., Giot, L., Göger-Neff, M., Gomez, H., Gonzalez, L. F. G., Goodenough, L., Goodman, M. C., Haag, N., Hara, T., Haser, J., Hellwig, D., Hofmann, M., Horton-Smith, G. A., Hourlier, A., Ishitsuka, M., Jochum, J., Jollet, C., Kaether, F., Kalousis, L. N., Kamyshkov, Y., Kaneda, M., Kaplan, D. M., Kawasaki, T., Kemp, E., de Kerret, H., Kryn, D., Kuze, M., Lachenmaier, T., Lane, C. E., Lasserre, T., Letourneau, A., Lhuillier, D., Lima, H. P., Lindner, M., López-Castaño, J. M., LoSecco, J. M., Lubsandorzhiev, B., Lucht, S., Maeda, J., Mariani, C., Maricic, J., Martino, J., Matsubara, T., Mention, G., Meregaglia, A., Miletic, T., Milincic, R., Minotti, A., Nagasaka, Y., Navas-Nicolás, D., Novella, P., Oberauer, L., Obolensky, M., Onillon, A., Osborn, A., Palomares, C., Pepe, I. M., Perasso, S., Porta, A., Pronost, G., Reichenbacher, J., Reinhold, B., Röhling, M., Roncin, R., Rybolt, B., Sakamoto, Y., Santorelli, R., Schilithz, A. C., Schönert, S., Schoppmann, S., Shaevitz, M. H., Sharankova, R., Shrestha, D., Sibille, V., Sinev, V., Skorokhvatov, M., Smith, E., Soiron, M., Spitz, J., Stahl, A., Stancu, I., Stokes, L. F. F., Strait, M., Suekane, F., Sukhotin, S., Sumiyoshi, T., Sun, Y., Svoboda, R., Terao, K., Tonazzo, A., Thi, H. H. Trinh, Valdiviesso, G., Vassilopoulos, N., Veyssiere, C., Vivier, M., Wagner, S., Walsh, N., Watanabe, H., Wiebusch, C., Wurm, M., Yang, G., Yermia, F., and Zimmer, V. Measurement of θ 13 in Double Chooz using neutron captures on hydrogen with novel background rejection techniques. United States: N. p., 2016. Web. doi:10.1007/JHEP01(2016)163.
Abe, Y., Appel, S., Abrahão, T., Almazan, H., Alt, C., dos Anjos, J. C., Barriere, J. C., Baussan, E., Bekman, I., Bergevin, M., Bezerra, T. J. C., Bezrukov, L., Blucher, E., Brugière, T., Buck, C., Busenitz, J., Cabrera, A., Camilleri, L., Carr, R., Cerrada, M., Chauveau, E., Chimenti, P., Collin, A. P., Conrad, J. M., Crespo-Anadón, J. I., Crum, K., Cucoanes, A. S., Damon, E., Dawson, J. V., Dhooghe, J., Dietrich, D., Djurcic, Z., Dracos, M., Etenko, A., Fallot, M., von Feilitzsch, F., Felde, J., Fernandes, S. M., Fischer, V., Franco, D., Franke, M., Furuta, H., Gil-Botella, I., Giot, L., Göger-Neff, M., Gomez, H., Gonzalez, L. F. G., Goodenough, L., Goodman, M. C., Haag, N., Hara, T., Haser, J., Hellwig, D., Hofmann, M., Horton-Smith, G. A., Hourlier, A., Ishitsuka, M., Jochum, J., Jollet, C., Kaether, F., Kalousis, L. N., Kamyshkov, Y., Kaneda, M., Kaplan, D. M., Kawasaki, T., Kemp, E., de Kerret, H., Kryn, D., Kuze, M., Lachenmaier, T., Lane, C. E., Lasserre, T., Letourneau, A., Lhuillier, D., Lima, H. P., Lindner, M., López-Castaño, J. M., LoSecco, J. M., Lubsandorzhiev, B., Lucht, S., Maeda, J., Mariani, C., Maricic, J., Martino, J., Matsubara, T., Mention, G., Meregaglia, A., Miletic, T., Milincic, R., Minotti, A., Nagasaka, Y., Navas-Nicolás, D., Novella, P., Oberauer, L., Obolensky, M., Onillon, A., Osborn, A., Palomares, C., Pepe, I. M., Perasso, S., Porta, A., Pronost, G., Reichenbacher, J., Reinhold, B., Röhling, M., Roncin, R., Rybolt, B., Sakamoto, Y., Santorelli, R., Schilithz, A. C., Schönert, S., Schoppmann, S., Shaevitz, M. H., Sharankova, R., Shrestha, D., Sibille, V., Sinev, V., Skorokhvatov, M., Smith, E., Soiron, M., Spitz, J., Stahl, A., Stancu, I., Stokes, L. F. F., Strait, M., Suekane, F., Sukhotin, S., Sumiyoshi, T., Sun, Y., Svoboda, R., Terao, K., Tonazzo, A., Thi, H. H. Trinh, Valdiviesso, G., Vassilopoulos, N., Veyssiere, C., Vivier, M., Wagner, S., Walsh, N., Watanabe, H., Wiebusch, C., Wurm, M., Yang, G., Yermia, F., & Zimmer, V. Measurement of θ 13 in Double Chooz using neutron captures on hydrogen with novel background rejection techniques. United States. doi:10.1007/JHEP01(2016)163.
Abe, Y., Appel, S., Abrahão, T., Almazan, H., Alt, C., dos Anjos, J. C., Barriere, J. C., Baussan, E., Bekman, I., Bergevin, M., Bezerra, T. J. C., Bezrukov, L., Blucher, E., Brugière, T., Buck, C., Busenitz, J., Cabrera, A., Camilleri, L., Carr, R., Cerrada, M., Chauveau, E., Chimenti, P., Collin, A. P., Conrad, J. M., Crespo-Anadón, J. I., Crum, K., Cucoanes, A. S., Damon, E., Dawson, J. V., Dhooghe, J., Dietrich, D., Djurcic, Z., Dracos, M., Etenko, A., Fallot, M., von Feilitzsch, F., Felde, J., Fernandes, S. M., Fischer, V., Franco, D., Franke, M., Furuta, H., Gil-Botella, I., Giot, L., Göger-Neff, M., Gomez, H., Gonzalez, L. F. G., Goodenough, L., Goodman, M. C., Haag, N., Hara, T., Haser, J., Hellwig, D., Hofmann, M., Horton-Smith, G. A., Hourlier, A., Ishitsuka, M., Jochum, J., Jollet, C., Kaether, F., Kalousis, L. N., Kamyshkov, Y., Kaneda, M., Kaplan, D. M., Kawasaki, T., Kemp, E., de Kerret, H., Kryn, D., Kuze, M., Lachenmaier, T., Lane, C. E., Lasserre, T., Letourneau, A., Lhuillier, D., Lima, H. P., Lindner, M., López-Castaño, J. M., LoSecco, J. M., Lubsandorzhiev, B., Lucht, S., Maeda, J., Mariani, C., Maricic, J., Martino, J., Matsubara, T., Mention, G., Meregaglia, A., Miletic, T., Milincic, R., Minotti, A., Nagasaka, Y., Navas-Nicolás, D., Novella, P., Oberauer, L., Obolensky, M., Onillon, A., Osborn, A., Palomares, C., Pepe, I. M., Perasso, S., Porta, A., Pronost, G., Reichenbacher, J., Reinhold, B., Röhling, M., Roncin, R., Rybolt, B., Sakamoto, Y., Santorelli, R., Schilithz, A. C., Schönert, S., Schoppmann, S., Shaevitz, M. H., Sharankova, R., Shrestha, D., Sibille, V., Sinev, V., Skorokhvatov, M., Smith, E., Soiron, M., Spitz, J., Stahl, A., Stancu, I., Stokes, L. F. F., Strait, M., Suekane, F., Sukhotin, S., Sumiyoshi, T., Sun, Y., Svoboda, R., Terao, K., Tonazzo, A., Thi, H. H. Trinh, Valdiviesso, G., Vassilopoulos, N., Veyssiere, C., Vivier, M., Wagner, S., Walsh, N., Watanabe, H., Wiebusch, C., Wurm, M., Yang, G., Yermia, F., and Zimmer, V. Wed . "Measurement of θ 13 in Double Chooz using neutron captures on hydrogen with novel background rejection techniques". United States. doi:10.1007/JHEP01(2016)163. https://www.osti.gov/servlets/purl/1326937.
@article{osti_1326937,
title = {Measurement of θ 13 in Double Chooz using neutron captures on hydrogen with novel background rejection techniques},
author = {Abe, Y. and Appel, S. and Abrahão, T. and Almazan, H. and Alt, C. and dos Anjos, J. C. and Barriere, J. C. and Baussan, E. and Bekman, I. and Bergevin, M. and Bezerra, T. J. C. and Bezrukov, L. and Blucher, E. and Brugière, T. and Buck, C. and Busenitz, J. and Cabrera, A. and Camilleri, L. and Carr, R. and Cerrada, M. and Chauveau, E. and Chimenti, P. and Collin, A. P. and Conrad, J. M. and Crespo-Anadón, J. I. and Crum, K. and Cucoanes, A. S. and Damon, E. and Dawson, J. V. and Dhooghe, J. and Dietrich, D. and Djurcic, Z. and Dracos, M. and Etenko, A. and Fallot, M. and von Feilitzsch, F. and Felde, J. and Fernandes, S. M. and Fischer, V. and Franco, D. and Franke, M. and Furuta, H. and Gil-Botella, I. and Giot, L. and Göger-Neff, M. and Gomez, H. and Gonzalez, L. F. G. and Goodenough, L. and Goodman, M. C. and Haag, N. and Hara, T. and Haser, J. and Hellwig, D. and Hofmann, M. and Horton-Smith, G. A. and Hourlier, A. and Ishitsuka, M. and Jochum, J. and Jollet, C. and Kaether, F. and Kalousis, L. N. and Kamyshkov, Y. and Kaneda, M. and Kaplan, D. M. and Kawasaki, T. and Kemp, E. and de Kerret, H. and Kryn, D. and Kuze, M. and Lachenmaier, T. and Lane, C. E. and Lasserre, T. and Letourneau, A. and Lhuillier, D. and Lima, H. P. and Lindner, M. and López-Castaño, J. M. and LoSecco, J. M. and Lubsandorzhiev, B. and Lucht, S. and Maeda, J. and Mariani, C. and Maricic, J. and Martino, J. and Matsubara, T. and Mention, G. and Meregaglia, A. and Miletic, T. and Milincic, R. and Minotti, A. and Nagasaka, Y. and Navas-Nicolás, D. and Novella, P. and Oberauer, L. and Obolensky, M. and Onillon, A. and Osborn, A. and Palomares, C. and Pepe, I. M. and Perasso, S. and Porta, A. and Pronost, G. and Reichenbacher, J. and Reinhold, B. and Röhling, M. and Roncin, R. and Rybolt, B. and Sakamoto, Y. and Santorelli, R. and Schilithz, A. C. and Schönert, S. and Schoppmann, S. and Shaevitz, M. H. and Sharankova, R. and Shrestha, D. and Sibille, V. and Sinev, V. and Skorokhvatov, M. and Smith, E. and Soiron, M. and Spitz, J. and Stahl, A. and Stancu, I. and Stokes, L. F. F. and Strait, M. and Suekane, F. and Sukhotin, S. and Sumiyoshi, T. and Sun, Y. and Svoboda, R. and Terao, K. and Tonazzo, A. and Thi, H. H. Trinh and Valdiviesso, G. and Vassilopoulos, N. and Veyssiere, C. and Vivier, M. and Wagner, S. and Walsh, N. and Watanabe, H. and Wiebusch, C. and Wurm, M. and Yang, G. and Yermia, F. and Zimmer, V.},
abstractNote = {We observed a measurement of the Double Chooz collaboration and the neutrino mixing angle θ13 using reactor $\bar{v}$e via the inverse beta decay reaction in which the neutron is captured on hydrogen. Our measurement is based on 462.72 live days data, approximately twice as much data as in the previous such analysis, collected with a detector positioned at an average distance of 1050 m from two reactor cores. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties. Accidental coincidences, the dominant background in this analysis, are suppressed by more than an order of magnitude with respect to our previous publication by a multi-variate analysis. Furthermore, these improvements demonstrate the capability of precise measurement of reactor $\bar{v}$e without gadolinium loading. Spectral distortions from the $\bar{v}$e reactor flux predictions previously reported with the neutron capture on gadolinium events are confirmed in the independent data sample presented here. A value of sin2 2θ13= 0.0950.039+0.038 (stat+syst) is obtained from a fit to the observed event rate as a function of the reactor power, a method insensitive to the energy spectrum shape. A simultaneous fit of the hydrogen capture events and of the gadolinium capture events yields a measurement of sin2 2θ13 = 0.088 ± 0.033(stat+syst).},
doi = {10.1007/JHEP01(2016)163},
journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 1,
volume = 2016,
place = {United States},
year = {2016},
month = {1}
}

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