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Title: Search for heavy neutrinos with the T2K near detector ND280

Abstract

This paper reports on the search for heavy neutrinos with masses in the range 140 < M N < 493 MeV / c 2 using the off-axis near detector ND280 of the T2K experiment. These particles can be produced from kaon decays in the standard neutrino beam and then subsequently decay in ND280. The decay modes under consideration are N α ± π and N α + β - ν ( - ) ( α , β = e , μ ) . A search for such events has been made using the Time Projection Chambers of ND280, where the background has been reduced to less than two events in the current dataset in all channels. No excess has been observed in the signal region. A combined Bayesian statistical approach has been applied to extract upper limits on the mixing elements of heavy neutrinos to electron-, muon- and tau- flavored currents ( U e 2 , U μ 2 , U τ 2 ) as a function of the heavy neutrino mass, e.g., U e 2 < 10 - 9 at 90% C.L. for a mass of 390 MeV / c 2 . These constraints are competitive with previous experiments.

Authors:
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Publication Date:
Research Org.:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); Alfred P. Sloan Foundation
Contributing Org.:
T2K Collaboration
OSTI Identifier:
1560898
Alternate Identifier(s):
OSTI ID: 1617855
Grant/Contract Number:  
SC0010005; SAPPJ-2014-00031; RISE-GA644294-JENNIFER 2020
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Abe, K., Akutsu, R., Ali, A., Andreopoulos, C., Anthony, L., Antonova, M., Aoki, S., Ariga, A., Ashida, Y., Awataguchi, Y., Azuma, Y., Ban, S., Barbi, M., Barker, G. J., Barr, G., Barry, C., Batkiewicz-Kwasniak, M., Bench, F., Berardi, V., Berkman, S., Berner, R. M., Berns, L., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bourguille, B., Boyd, S. B., Brailsford, D., Bravar, A., Bronner, C., Buizza Avanzini, M., Calcutt, J., Campbell, T., Cao, S., Cartwright, S. L., Catanesi, M. G., Cervera, A., Chappell, A., Checchia, C., Cherdack, D., Chikuma, N., Christodoulou, G., Coleman, J., Collazuol, G., Coplowe, D., Cudd, A., Dabrowska, A., De Rosa, G., Dealtry, T., Denner, P. F., Dennis, S. R., Densham, C., Di Lodovico, F., Dokania, N., Dolan, S., Drapier, O., Duffy, K. E., Dumarchez, J., Dunne, P., Emery-Schrenk, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A. J., Fiorentini, G. A., Fiorillo, G., Francois, C., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, Y., Gameil, K., Giganti, C., Gizzarelli, F., Golan, T., Gonin, M., Hadley, D. R., Haegel, L., Haigh, J. T., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hastings, N. C., Hayashino, T., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., Hong Van, N. T., Hosomi, F., Iacob, F., Ichikawa, A. K., Ikeda, M., Inoue, T., Intonti, R. A., Ishida, T., Ishii, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Jamieson, B., Jesus, C., Jiang, M., Johnson, S., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Katori, T., Kato, Y., Kearns, E., Khabibullin, M., Khotjantsev, A., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Koller, P. P., Konaka, A., Kormos, L. L., Koshio, Y., Kowalik, K., Kubo, H., Kudenko, Y., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Lasorak, P., Laveder, M., Lawe, M., Licciardi, M., Lindner, T., Liptak, Z. J., Litchfield, R. P., Li, X., Longhin, A., Lopez, J. P., Lou, T., Ludovici, L., Lu, X., Lux, T., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A. D., Martin, J. F., Martins, P., Maruyama, T., Matsubara, T., Matveev, V., Mavrokoridis, K., Ma, W. Y., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K. S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Molina Bueno, L., Moriyama, S., Morrison, J., Mueller, Th. A., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K. G., Nakamura, K., Nakamura, K. D., Nakanishi, Y., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Niewczas, K., Nishikawa, K., Nishimura, Y., Nonnenmacher, T. S., Novella, P., Nowak, J., O’Keeffe, H. M., O’Sullivan, L., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. M., Owen, R. A., Oyama, Y., Palladino, V., Palomino, J. L., Paolone, V., Parker, W. C., Paudyal, P., Pavin, M., Payne, D., Pickering, L., Pidcott, C., Pinzon Guerra, E. S., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P. N., Reinherz-Aronis, E., Riccio, C., Rondio, E., Rossi, B., Roth, S., Rubbia, A., Ruggeri, A. C., Rychter, A., Sakashita, K., Sánchez, F., Sasaki, S., Scantamburlo, E., Schloesser, C. M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaw, D., Shaykina, A., Shiozawa, M., Smirnov, A., Smy, M., Sobczyk, J. T., Sobel, H., Sonoda, Y., Steinmann, J., Stewart, T., Stowell, P., Suda, Y., Suvorov, S., Suzuki, A., Suzuki, S. Y., Suzuki, Y., Sztuc, A. A., Tacik, R., Tada, M., Takeda, A., Takeuchi, Y., Tamura, R., Tanaka, H. K., Tanaka, H. A., Thakore, T., Thompson, L. F., Toki, W., Touramanis, C., Tsui, K. M., Tsukamoto, T., Tzanov, M., Uchida, Y., Uno, W., Vagins, M., Vallari, Z., Vargas, D., Vasseur, G., Vilela, C., Vladisavljevic, T., Volkov, V. V., Wachala, T., Walker, J., Wang, Y., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilking, M. J., Wilkinson, C., Wilson, J. R., Wilson, R. J., Wret, C., Yamada, Y., Yamamoto, K., Yamasu, S., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zimmerman, E. D., Zito, M., Zsoldos, S., Zykova, A., and T2K Collaboration. Search for heavy neutrinos with the T2K near detector ND280. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.052006.
Abe, K., Akutsu, R., Ali, A., Andreopoulos, C., Anthony, L., Antonova, M., Aoki, S., Ariga, A., Ashida, Y., Awataguchi, Y., Azuma, Y., Ban, S., Barbi, M., Barker, G. J., Barr, G., Barry, C., Batkiewicz-Kwasniak, M., Bench, F., Berardi, V., Berkman, S., Berner, R. M., Berns, L., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bourguille, B., Boyd, S. B., Brailsford, D., Bravar, A., Bronner, C., Buizza Avanzini, M., Calcutt, J., Campbell, T., Cao, S., Cartwright, S. L., Catanesi, M. G., Cervera, A., Chappell, A., Checchia, C., Cherdack, D., Chikuma, N., Christodoulou, G., Coleman, J., Collazuol, G., Coplowe, D., Cudd, A., Dabrowska, A., De Rosa, G., Dealtry, T., Denner, P. F., Dennis, S. R., Densham, C., Di Lodovico, F., Dokania, N., Dolan, S., Drapier, O., Duffy, K. E., Dumarchez, J., Dunne, P., Emery-Schrenk, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A. J., Fiorentini, G. A., Fiorillo, G., Francois, C., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, Y., Gameil, K., Giganti, C., Gizzarelli, F., Golan, T., Gonin, M., Hadley, D. R., Haegel, L., Haigh, J. T., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hastings, N. C., Hayashino, T., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., Hong Van, N. T., Hosomi, F., Iacob, F., Ichikawa, A. K., Ikeda, M., Inoue, T., Intonti, R. A., Ishida, T., Ishii, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Jamieson, B., Jesus, C., Jiang, M., Johnson, S., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Katori, T., Kato, Y., Kearns, E., Khabibullin, M., Khotjantsev, A., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Koller, P. P., Konaka, A., Kormos, L. L., Koshio, Y., Kowalik, K., Kubo, H., Kudenko, Y., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Lasorak, P., Laveder, M., Lawe, M., Licciardi, M., Lindner, T., Liptak, Z. J., Litchfield, R. P., Li, X., Longhin, A., Lopez, J. P., Lou, T., Ludovici, L., Lu, X., Lux, T., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A. D., Martin, J. F., Martins, P., Maruyama, T., Matsubara, T., Matveev, V., Mavrokoridis, K., Ma, W. Y., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K. S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Molina Bueno, L., Moriyama, S., Morrison, J., Mueller, Th. A., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K. G., Nakamura, K., Nakamura, K. D., Nakanishi, Y., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Niewczas, K., Nishikawa, K., Nishimura, Y., Nonnenmacher, T. S., Novella, P., Nowak, J., O’Keeffe, H. M., O’Sullivan, L., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. M., Owen, R. A., Oyama, Y., Palladino, V., Palomino, J. L., Paolone, V., Parker, W. C., Paudyal, P., Pavin, M., Payne, D., Pickering, L., Pidcott, C., Pinzon Guerra, E. S., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P. N., Reinherz-Aronis, E., Riccio, C., Rondio, E., Rossi, B., Roth, S., Rubbia, A., Ruggeri, A. C., Rychter, A., Sakashita, K., Sánchez, F., Sasaki, S., Scantamburlo, E., Schloesser, C. M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaw, D., Shaykina, A., Shiozawa, M., Smirnov, A., Smy, M., Sobczyk, J. T., Sobel, H., Sonoda, Y., Steinmann, J., Stewart, T., Stowell, P., Suda, Y., Suvorov, S., Suzuki, A., Suzuki, S. Y., Suzuki, Y., Sztuc, A. A., Tacik, R., Tada, M., Takeda, A., Takeuchi, Y., Tamura, R., Tanaka, H. K., Tanaka, H. A., Thakore, T., Thompson, L. F., Toki, W., Touramanis, C., Tsui, K. M., Tsukamoto, T., Tzanov, M., Uchida, Y., Uno, W., Vagins, M., Vallari, Z., Vargas, D., Vasseur, G., Vilela, C., Vladisavljevic, T., Volkov, V. V., Wachala, T., Walker, J., Wang, Y., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilking, M. J., Wilkinson, C., Wilson, J. R., Wilson, R. J., Wret, C., Yamada, Y., Yamamoto, K., Yamasu, S., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zimmerman, E. D., Zito, M., Zsoldos, S., Zykova, A., & T2K Collaboration. Search for heavy neutrinos with the T2K near detector ND280. United States. doi:10.1103/PhysRevD.100.052006.
Abe, K., Akutsu, R., Ali, A., Andreopoulos, C., Anthony, L., Antonova, M., Aoki, S., Ariga, A., Ashida, Y., Awataguchi, Y., Azuma, Y., Ban, S., Barbi, M., Barker, G. J., Barr, G., Barry, C., Batkiewicz-Kwasniak, M., Bench, F., Berardi, V., Berkman, S., Berner, R. M., Berns, L., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bourguille, B., Boyd, S. B., Brailsford, D., Bravar, A., Bronner, C., Buizza Avanzini, M., Calcutt, J., Campbell, T., Cao, S., Cartwright, S. L., Catanesi, M. G., Cervera, A., Chappell, A., Checchia, C., Cherdack, D., Chikuma, N., Christodoulou, G., Coleman, J., Collazuol, G., Coplowe, D., Cudd, A., Dabrowska, A., De Rosa, G., Dealtry, T., Denner, P. F., Dennis, S. R., Densham, C., Di Lodovico, F., Dokania, N., Dolan, S., Drapier, O., Duffy, K. E., Dumarchez, J., Dunne, P., Emery-Schrenk, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A. J., Fiorentini, G. A., Fiorillo, G., Francois, C., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, Y., Gameil, K., Giganti, C., Gizzarelli, F., Golan, T., Gonin, M., Hadley, D. R., Haegel, L., Haigh, J. T., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hastings, N. C., Hayashino, T., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., Hong Van, N. T., Hosomi, F., Iacob, F., Ichikawa, A. K., Ikeda, M., Inoue, T., Intonti, R. A., Ishida, T., Ishii, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Jamieson, B., Jesus, C., Jiang, M., Johnson, S., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Katori, T., Kato, Y., Kearns, E., Khabibullin, M., Khotjantsev, A., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Koller, P. P., Konaka, A., Kormos, L. L., Koshio, Y., Kowalik, K., Kubo, H., Kudenko, Y., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Lasorak, P., Laveder, M., Lawe, M., Licciardi, M., Lindner, T., Liptak, Z. J., Litchfield, R. P., Li, X., Longhin, A., Lopez, J. P., Lou, T., Ludovici, L., Lu, X., Lux, T., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A. D., Martin, J. F., Martins, P., Maruyama, T., Matsubara, T., Matveev, V., Mavrokoridis, K., Ma, W. Y., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K. S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Molina Bueno, L., Moriyama, S., Morrison, J., Mueller, Th. A., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K. G., Nakamura, K., Nakamura, K. D., Nakanishi, Y., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Niewczas, K., Nishikawa, K., Nishimura, Y., Nonnenmacher, T. S., Novella, P., Nowak, J., O’Keeffe, H. M., O’Sullivan, L., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. M., Owen, R. A., Oyama, Y., Palladino, V., Palomino, J. L., Paolone, V., Parker, W. C., Paudyal, P., Pavin, M., Payne, D., Pickering, L., Pidcott, C., Pinzon Guerra, E. S., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P. N., Reinherz-Aronis, E., Riccio, C., Rondio, E., Rossi, B., Roth, S., Rubbia, A., Ruggeri, A. C., Rychter, A., Sakashita, K., Sánchez, F., Sasaki, S., Scantamburlo, E., Schloesser, C. M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaw, D., Shaykina, A., Shiozawa, M., Smirnov, A., Smy, M., Sobczyk, J. T., Sobel, H., Sonoda, Y., Steinmann, J., Stewart, T., Stowell, P., Suda, Y., Suvorov, S., Suzuki, A., Suzuki, S. Y., Suzuki, Y., Sztuc, A. A., Tacik, R., Tada, M., Takeda, A., Takeuchi, Y., Tamura, R., Tanaka, H. K., Tanaka, H. A., Thakore, T., Thompson, L. F., Toki, W., Touramanis, C., Tsui, K. M., Tsukamoto, T., Tzanov, M., Uchida, Y., Uno, W., Vagins, M., Vallari, Z., Vargas, D., Vasseur, G., Vilela, C., Vladisavljevic, T., Volkov, V. V., Wachala, T., Walker, J., Wang, Y., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilking, M. J., Wilkinson, C., Wilson, J. R., Wilson, R. J., Wret, C., Yamada, Y., Yamamoto, K., Yamasu, S., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zimmerman, E. D., Zito, M., Zsoldos, S., Zykova, A., and T2K Collaboration. Tue . "Search for heavy neutrinos with the T2K near detector ND280". United States. doi:10.1103/PhysRevD.100.052006.
@article{osti_1560898,
title = {Search for heavy neutrinos with the T2K near detector ND280},
author = {Abe, K. and Akutsu, R. and Ali, A. and Andreopoulos, C. and Anthony, L. and Antonova, M. and Aoki, S. and Ariga, A. and Ashida, Y. and Awataguchi, Y. and Azuma, Y. and Ban, S. and Barbi, M. and Barker, G. J. and Barr, G. and Barry, C. and Batkiewicz-Kwasniak, M. and Bench, F. and Berardi, V. and Berkman, S. and Berner, R. M. and Berns, L. and Bhadra, S. and Bienstock, S. and Blondel, A. and Bolognesi, S. and Bourguille, B. and Boyd, S. B. and Brailsford, D. and Bravar, A. and Bronner, C. and Buizza Avanzini, M. and Calcutt, J. and Campbell, T. and Cao, S. and Cartwright, S. L. and Catanesi, M. G. and Cervera, A. and Chappell, A. and Checchia, C. and Cherdack, D. and Chikuma, N. and Christodoulou, G. and Coleman, J. and Collazuol, G. and Coplowe, D. and Cudd, A. and Dabrowska, A. and De Rosa, G. and Dealtry, T. and Denner, P. F. and Dennis, S. R. and Densham, C. and Di Lodovico, F. and Dokania, N. and Dolan, S. and Drapier, O. and Duffy, K. E. and Dumarchez, J. and Dunne, P. and Emery-Schrenk, S. and Ereditato, A. and Fernandez, P. and Feusels, T. and Finch, A. J. and Fiorentini, G. A. and Fiorillo, G. and Francois, C. and Friend, M. and Fujii, Y. and Fujita, R. and Fukuda, D. and Fukuda, Y. and Gameil, K. and Giganti, C. and Gizzarelli, F. and Golan, T. and Gonin, M. and Hadley, D. R. and Haegel, L. and Haigh, J. T. and Hamacher-Baumann, P. and Hartz, M. and Hasegawa, T. and Hastings, N. C. and Hayashino, T. and Hayato, Y. and Hiramoto, A. and Hogan, M. and Holeczek, J. and Hong Van, N. T. and Hosomi, F. and Iacob, F. and Ichikawa, A. K. and Ikeda, M. and Inoue, T. and Intonti, R. A. and Ishida, T. and Ishii, T. and Ishitsuka, M. and Iwamoto, K. and Izmaylov, A. and Jamieson, B. and Jesus, C. and Jiang, M. and Johnson, S. and Jonsson, P. and Jung, C. K. and Kabirnezhad, M. and Kaboth, A. C. and Kajita, T. and Kakuno, H. and Kameda, J. and Karlen, D. and Katori, T. and Kato, Y. and Kearns, E. and Khabibullin, M. and Khotjantsev, A. and Kim, H. and Kim, J. and King, S. and Kisiel, J. and Knight, A. and Knox, A. and Kobayashi, T. and Koch, L. and Koga, T. and Koller, P. P. and Konaka, A. and Kormos, L. L. and Koshio, Y. and Kowalik, K. and Kubo, H. and Kudenko, Y. and Kurjata, R. and Kutter, T. and Kuze, M. and Labarga, L. and Lagoda, J. and Lamoureux, M. and Lasorak, P. and Laveder, M. and Lawe, M. and Licciardi, M. and Lindner, T. and Liptak, Z. J. and Litchfield, R. P. and Li, X. and Longhin, A. and Lopez, J. P. and Lou, T. and Ludovici, L. and Lu, X. and Lux, T. and Magaletti, L. and Mahn, K. and Malek, M. and Manly, S. and Maret, L. and Marino, A. D. and Martin, J. F. and Martins, P. and Maruyama, T. and Matsubara, T. and Matveev, V. and Mavrokoridis, K. and Ma, W. Y. and Mazzucato, E. and McCarthy, M. and McCauley, N. and McFarland, K. 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F. and Toki, W. and Touramanis, C. and Tsui, K. M. and Tsukamoto, T. and Tzanov, M. and Uchida, Y. and Uno, W. and Vagins, M. and Vallari, Z. and Vargas, D. and Vasseur, G. and Vilela, C. and Vladisavljevic, T. and Volkov, V. V. and Wachala, T. and Walker, J. and Wang, Y. and Wark, D. and Wascko, M. O. and Weber, A. and Wendell, R. and Wilking, M. J. and Wilkinson, C. and Wilson, J. R. and Wilson, R. J. and Wret, C. and Yamada, Y. and Yamamoto, K. and Yamasu, S. and Yanagisawa, C. and Yang, G. and Yano, T. and Yasutome, K. and Yen, S. and Yershov, N. and Yokoyama, M. and Yoshida, T. and Yu, M. and Zalewska, A. and Zalipska, J. and Zaremba, K. and Zarnecki, G. and Ziembicki, M. and Zimmerman, E. D. and Zito, M. and Zsoldos, S. and Zykova, A. and T2K Collaboration},
abstractNote = {This paper reports on the search for heavy neutrinos with masses in the range 140<MN<493 MeV/c2 using the off-axis near detector ND280 of the T2K experiment. These particles can be produced from kaon decays in the standard neutrino beam and then subsequently decay in ND280. The decay modes under consideration are N→ℓα±π∓ and N→ℓα+ℓβ-ν(-)(α,β=e,μ). A search for such events has been made using the Time Projection Chambers of ND280, where the background has been reduced to less than two events in the current dataset in all channels. No excess has been observed in the signal region. A combined Bayesian statistical approach has been applied to extract upper limits on the mixing elements of heavy neutrinos to electron-, muon- and tau- flavored currents (Ue2, Uμ2, Uτ2) as a function of the heavy neutrino mass, e.g., Ue2<10-9 at 90% C.L. for a mass of 390 MeV/c2. These constraints are competitive with previous experiments.},
doi = {10.1103/PhysRevD.100.052006},
journal = {Physical Review D},
number = 5,
volume = 100,
place = {United States},
year = {2019},
month = {9}
}

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DOI: 10.1103/PhysRevD.100.052006

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