1. Muon capture on light isotopes measured with the Double Chooz detector
- Author
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A. Hourlier, L. B. Bezrukov, Eric Baussan, T. Brugière, S. M. Fernandes, J. Reichenbacher, A.V. Etenko, D. Hellwig, I. Stancu, L. Camilleri, T. Hara, C. Veyssiere, R. Carr, H. Furuta, G. Mention, Anatael Cabrera, J. C. dos Anjos, D. Shrestha, A. Onillon, M. H. Shaevitz, M. Vivier, J. M. LoSecco, C. Alt, Yoshio Abe, Anselmo Meregaglia, J. Spitz, H. Gomez, E. Conover, V. Zimmer, Amanda Porta, Marcos Cerrada, G. A. Horton-Smith, C. Mariani, H. P. Lima, H. de Kerret, G. Yang, J. Maeda, Josef Jochum, BayarJon Paul Lubsandorzhiev, A.C. Schilithz, I. Bekman, V. Sibille, S. Appel, I. Gil-Botella, N. Vassilopoulos, R. Roncin, J.V. Dawson, S. Perasso, L. Goodenough, Luis González, F. von Feilitzsch, J. Busenitz, R. Santorelli, J. M. López-Castaño, M. Kaneda, Muriel Fallot, B. Reinhold, A. Tonazzo, F. Yermia, Audrey Letourneau, Janet Conrad, E. Damon, E. Blucher, Y. Sakamoto, T. Miletic, Zelimir Djurcic, Matthew L Strait, T. Abrahão, Y. Kamyshkov, M. Franke, R. Svoboda, Masahiro Kuze, Florian Kaether, J. Felde, J. Dhooghe, G. Pronost, F. Suekane, M. Obolensky, L.F.F. Stokes, P. Novella, T. Sumiyoshi, D. Franco, J. Martino, David Lhuillier, V. V. Sinev, N. Walsh, E. Kemp, M. Röhling, Takeo Kawasaki, A. Minotti, I. M. Pepe, P. Chimenti, Lydie Giot, A. Stahl, Lothar Oberauer, T. Matsubara, M. Göger-Neff, R. Milincic, E. Chauveau, Cécile Jollet, S. Schönert, A. Osborn, Yasushi Nagasaka, Daniel M. Kaplan, Stefan Schoppmann, H. Almazan, C. E. Lane, Masaki Ishitsuka, J. Maricic, Tobias Lachenmaier, V. Fischer, Y. Sun, Stephen Robert Wagner, Marcos Dracos, M. Bergevin, S. V. Sukhotin, E. Smith, N. Haag, K. Crum, J. I. Crespo-Anadón, S. Lucht, R. Sharankova, Diana Navas-Nicolas, C. Palomares, Michael Hofmann, Christian Buck, L. N. Kalousis, T.J.C. Bezerra, D. Dietrich, Kazuhiro Terao, A. S. Cucoanes, Christopher Wiebusch, G. A. Valdiviesso, M. C. Goodman, J. Haser, M. D. Skorokhvatov, Michael Wurm, H. Watanabe, Thierry Lasserre, J. C. Barriere, D. Kryn, M. Soiron, H. H. Trinh Thi, Manfred Lindner, Antoine Collin, B. Rybolt, Abe, Y, Abrahao, T, Almazan, H, Alt, C, Appel, S, Barriere, J, Baussan, E, Bekman, I, Bergevin, M, Bezerra, T, Bezrukov, L, Blucher, E, Brugiere, T, Buck, C, Busenitz, J, Cabrera, A, Camilleri, L, Carr, R, Cerrada, M, Chauveau, E, Chimenti, P, Collin, A, Conover, E, Conrad, J, Crespo-Anadon, J, Crum, K, Cucoanes, A, Damon, E, Dawson, J, De Kerret, H, Dhooghe, J, Dietrich, D, Djurcic, Z, Dos Anjos, J, Dracos, M, Etenko, A, Fallot, M, Felde, J, Fernandes, S, Fischer, V, Franco, D, Franke, M, Furuta, H, Gil-Botella, I, Giot, L, Goger-Neff, M, Gomez, H, Gonzalez, L, Goodenough, L, Goodman, M, Haag, N, Hara, T, Haser, J, Hellwig, D, Hofmann, M, Horton-Smith, G, Hourlier, A, Ishitsuka, M, Jochum, J, Jollet, C, Kaether, F, Kalousis, L, Kamyshkov, Y, Kaneda, M, Kaplan, D, Kawasaki, T, Kemp, E, Kryn, D, Kuze, M, Lachenmaier, T, Lane, C, Lasserre, T, Letourneau, A, Lhuillier, D, Lima, H, Lindner, M, Lopez-Castano, J, Losecco, J, 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-Nicolas, D, Novella, P, Oberauer, L, Obolensky, M, Onillon, A, Osborn, A, Palomares, C, Pepe, I, Perasso, S, Porta, A, Pronost, G, Reichenbacher, J, Reinhold, B, Rohling, M, Roncin, R, Rybolt, B, Sakamoto, Y, Santorelli, R, Schilithz, A, Schonert, S, Schoppmann, S, Shaevitz, M, Sharankova, R, Shrestha, D, Sibille, V, Sinev, V, Skorokhvatov, M, Smith, E, Soiron, M, Spitz, J, Stahl, A, Stancu, I, Stokes, L, Strait, M, Suekane, F, Sukhotin, S, Sumiyoshi, T, Sun, Y, Svoboda, R, Terao, K, Tonazzo, A, Trinh Thi, H, Valdiviesso, G, Vassilopoulos, N, Veyssiere, C, Vivier, M, Von Feilitzsch, F, Wagner, S, Walsh, N, Watanabe, H, Wiebusch, C, Wurm, M, Yang, G, Yermia, F, and Zimmer, V
- Subjects
Physics ,Semileptonic decay ,Particle physics ,education.field_of_study ,Muon ,010308 nuclear & particles physics ,Population ,neutrino physic ,01 natural sciences ,Muon capture ,Nuclear physics ,13. Climate action ,0103 physical sciences ,High Energy Physics::Experiment ,Neutron ,Production (computer science) ,Neutrino ,010306 general physics ,Ground state ,education - Abstract
Using the Double Chooz detector, designed to measure the neutrino mixing angle $\theta_{13}$, the products of $\mu^-$ capture on $^{12}$C, $^{13}$C, $^{14}$N and $^{16}$O have been measured. Over a period of 489.5 days, $2.3\times10^6$ stopping cosmic $\mu^-$ have been collected, of which $1.8\times10^5$ captured on carbon, nitrogen, or oxygen nuclei in the inner detector scintillator or acrylic vessels. The resulting isotopes were tagged using prompt neutron emission (when applicable), the subsequent beta decays, and, in some cases, $\beta$-delayed neutrons. The most precise measurement of the rate of $^{12}\mathrm C(\mu^-,\nu)^{12}\mathrm B$ to date is reported: $6.57^{+0.11}_{-0.21}\times10^{3}\,\mathrm s^{-1}$, or $(17.35^{+0.35}_{-0.59})\%$ of nuclear captures. By tagging excited states emitting gammas, the ground state transition rate to $^{12}$B has been determined to be $5.68^{+0.14}_{-0.23}\times10^3\,\mathrm s^{-1}$. The heretofore unobserved reactions $^{12}\mathrm C(\mu^-,\nu\alpha)^{8}\mathrm{Li}$, $^{13}\mathrm C(\mu^-,\nu\mathrm n\alpha)^{8}\mathrm{Li}$, and $^{13}\mathrm C(\mu^-,\nu\mathrm n)^{12}\mathrm B$ are measured. Further, a population of $\beta$n decays following stopping muons is identified with $5.5\sigma$ significance. Statistics limit our ability to identify these decays definitively. Assuming negligible production of $^{8}$He, the reaction $^{13}\mathrm C(\mu^-,\nu\alpha)^{9}\mathrm{Li}$ is found to be present at the $2.7\sigma$ level. Limits are set on a variety of other processes.
- Published
- 2016