David Wark: Publications

Constraint on the matter-antimatter symmetry-violating phase in neutrino oscillations

Nature Springer Nature 580:7803 (2020) 339-344

Authors:

K Abe, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, Y Asada, Y Ashida, ET Atkin, Y Awataguchi, S Ban, M Barbi, GJ Barker, G Barr, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, S Berkman, L Berns, S Bhadra, S Bienstock, A Blondel, S Bolognesi, B Bourguille, SB Boyd, D Brailsford, A Bravar, DB Berguño, C Bronner, A Bubak, MB Avanzini, J Calcutt, T Campbell, S Cao, SL Cartwright, Catanesi, A Cervera, A Chappell, C Checchia, D Cherdack, N Chikuma, G Christodoulou, J Coleman, G Collazuol, L Cook

Abstract:

The charge-conjugation and parity-reversal (CP) symmetry of fundamental particles is a symmetry between matter and antimatter. Violation of this CP symmetry was first observed in 19641, and CP violation in the weak interactions of quarks was soon established2. Sakharov proposed3 that CP violation is necessary to explain the observed imbalance of matter and antimatter abundance in the Universe. However, CP violation in quarks is too small to 91̽�� this explanation. So far, CP violation has not been observed in non-quark elementary particle systems. It has been shown that CP violation in leptons could generate the matter–antimatter disparity through a process called leptogenesis4. Leptonic mixing, which appears in the standard model’s charged current interactions5,6, provides a potential source of CP violation through a complex phase δCP, which is required by some theoretical models of leptogenesis7,8,9. This CP violation can be measured in muon neutrino to electron neutrino oscillations and the corresponding antineutrino oscillations, which are experimentally accessible using accelerator-produced beams as established by the Tokai-to-Kamioka (T2K) and NOvA experiments10,11. Until now, the value of δCP has not been substantially constrained by neutrino oscillation experiments. Here we report a measurement using long-baseline neutrino and antineutrino oscillations observed by the T2K experiment that shows a large increase in the neutrino oscillation probability, excluding values of δCP that result in a large increase in the observed antineutrino oscillation probability at three standard deviations (3σ). The 3σ confidence interval for δCP, which is cyclic and repeats every 2π, is [−3.41, −0.03] for the so-called normal mass ordering and [−2.54, −0.32] for the inverted mass ordering. Our results indicate CP violation in leptons and our method enables sensitive searches for matter–antimatter asymmetry in neutrino oscillations using accelerator-produced neutrino beams. Future measurements with larger datasets will test whether leptonic CP violation is larger than the CP violation in quarks.

Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K

(2020)

Authors:

K Abe, N Akhlaq, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, T Arihara, Y Asada, Y Ashida, ET Atkin, Y Awataguchi, S Ban, M Barbi, GJ Barker, G Barr, D Barrow, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, L Berns, S Bhadra, S Bienstock, S Bolognesi, T Bonus, B Bourguille, SB Boyd, A Bravar, D Bravo Berguño, C Bronner, S Bron, A Bubak, M Buizza Avanzini, T Campbell, S Cao, SL Cartwright, MG Catanesi, A Cervera, D Cherdack, N Chikuma, G Christodoulou, M Cicerchia, J Coleman, G Collazuol, L Cook, D Coplowe, A Cudd, A Dabrowska, G De Rosa, T Dealtry, SR Dennis, C Densham, F Di Lodovico, N Dokania, S Dolan, TA Doyle, O Drapier, J Dumarchez, P Dunne, A Eguchi, L Eklund, S Emery-Schrenk, A Ereditato, AJ Finch, GA Fiorentini, G Fiorillo, C Francois, M Friend, Y Fujii, R Fujita, D Fukuda, R Fukuda, Y Fukuda, K Fusshoeller, C Giganti, M Gonin, A Gorin, M Guigue, DR Hadley, JT Haigh, P Hamacher-Baumann, M Hartz, T Hasegawa, S Hassani, NC Hastings, Y Hayato, A Hiramoto, M Hogan, J Holeczek, NT Hong Van, T Honjo, F Iacob, AK Ichikawa, M Ikeda, T Ishida, M Ishitsuka, K Iwamoto, A Izmaylov, N Izumi, M Jakkapu, B Jamieson, SJ Jenkins, C Jesús-Valls, M Jiang, P Jonsson, CK Jung, X Junjie, PB Jurj, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, D Karlen, SP Kasetti, Y Kataoka, Y Katayama, T Katori, Y Kato, E Kearns, M Khabibullin, A Khotjantsev, T Kikawa, H Kikutani, H Kim, S King, J Kisiel, A Knight, T Kobata, T Kobayashi, L Koch, T Koga, A Konaka, LL Kormos, Y Koshio, A Kostin, K Kowalik, H Kubo, Y Kudenko, N Kukita, S Kuribayashi, R Kurjata, T Kutter, M Kuze, L Labarga, J Lagoda, M Lamoureux, D Last, M Lawe, M Licciardi, RP Litchfield, SL Liu, X Li, A Longhin, L Ludovici, X Lu, T Lux, LN Machado, L Magaletti, K Mahn, M Malek, S Manly, L Maret, AD Marino, L Marti-Magro, T Maruyama, T Matsubara, K Matsushita, V Matveev, C Mauger, K Mavrokoridis, E Mazzucato, N McCauley, J McElwee, KS McFarland, C McGrew, A Mefodiev, C Metelko, M Mezzetto, A Minamino, O Mineev, S Mine, M Miura, L Molina Bueno, S Moriyama, Th A Mueller, L Munteanu, S Murphy, Y Nagai, T Nakadaira, M Nakahata, Y Nakajima, A Nakamura, K Nakamura, S Nakayama, T Nakaya, K Nakayoshi, CER Naseby, TV Ngoc, K Niewczas, K Nishikawa, Y Nishimura, E Noah, TS Nonnenmacher, F Nova, P Novella, J Nowak, JC Nugent, HM O'Keeffe, L O'Sullivan, T Odagawa, T Ogawa, R Okada, K Okumura, T Okusawa, SM Oser, RA Owen, Y Oyama, V Palladino, V Paolone, M Pari, WC Parker, S Parsa, J Pasternak, M Pavin, D Payne, GC Penn, L Pickering, C Pidcott, G Pintaudi, C Pistillo, B Popov, K Porwit, M Posiadala-Zezula, A Pritchard, B Quilain, T Radermacher, E Radicioni, B Radics, PN Ratoff, C Riccio, E Rondio, S Roth, A Rubbia, AC Ruggeri, C Ruggles, A Rychter, K Sakashita, F Sánchez, G Santucci, CM Schloesser, K Scholberg, M Scott, Y Seiya, T Sekiguchi, H Sekiya, D Sgalaberna, A Shaikhiev, A Shaykina, M Shiozawa, W Shorrock, A Shvartsman, M Smy, JT Sobczyk, H Sobel, FJP Soler, Y Sonoda, S Suvorov, A Suzuki, SY Suzuki, Y Suzuki, AA Sztuc, M Tada, M Tajima, A Takeda, Y Takeuchi, HK Tanaka, HA Tanaka, S Tanaka, Y Tanihara, M Tani, N Teshima, LF Thompson, W Toki, C Touramanis, T Towstego, KM Tsui, T Tsukamoto, M Tzanov, Y Uchida, M Vagins, S Valder, Z Vallari, D Vargas, G Vasseur, WGS Vinning, T Vladisavljevic, VV Volkov, T Wachala, J Walker, JG Walsh, Y Wang, D Wark, MO Wascko, A Weber, R Wendell, MJ Wilking, C Wilkinson, JR Wilson, K Wood, C Wret, K Yamamoto, C Yanagisawa, G Yang, T Yano, K Yasutome, N Yershov, M Yokoyama, T Yoshida, M Yu, A Zalewska, J Zalipska, K Zaremba, G Zarnecki, M Ziembicki, ED Zimmerman, M Zito, S Zsoldos, A Zykova

Evaluation of gadolinium’s action on water Cherenkov detector systems with EGADS

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 959 (2020) 163549

Authors:

Ll Marti, M Ikeda, Y Kato, Y Kishimoto, M Nakahata, Y Nakajima, Y Nakano, S Nakayama, Y Okajima, A Orii, G Pronost, H Sekiya, M Shiozawa, H Tanaka, K Ueno, S Yamada, T Yano, T Yokozawa, M Murdoch, J Schuemann, MR Vagins, K Bays, G Carminati, NJ Griskevich, WR Kropp, S Locke, A Renshaw, MB Smy, P Weatherly, S Ito, H Ishino, A Kibayashi, Y Koshio, T Mori, M Sakuda, R Yamaguchi, P Fernandez, L Labarga, I Bandac, J Perez, J Amey, RP Litchfield, A Sztuc, Y Uchida, WY Ma, A Goldsack, C Simpson, D Wark, LHV Anthony, N McCauley, A Pritchard, F Di Lodovico, B Richards, A Cole, M Thiesse, L Thompson, J Imber, SV Cao, K Ito, Y Takeuchi, R Akutsu, Y Nishimura, K Okumura, S Hirota, F Muto, M Yokoyama, Y Suda, H Zhang

Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

Physical Review D American Physical Society (APS) 101:5 (2020) 052011

Authors:

M Tanaka, K Abe, C Bronner, Y Hayato, M Ikeda, S Imaizumi, H Ito, J Kameda, Y Kataoka, Y Kato, Y Kishimoto, Ll Marti, M Miura, S Moriyama, T Mochizuki, M Nakahata, Y Nakajima, S Nakayama, T Okada, K Okamoto, A Orii, G Pronost, H Sekiya, M Shiozawa, Y Sonoda, A Takeda, A Takenaka, H Tanaka, T Yano, R Akutsu, T Kajita, K Okumura, R Wang, J Xia, D Bravo-Berguño, L Labarga, P Fernandez, FDM Blaszczyk, E Kearns, JL Raaf, JL Stone, L Wan, T Wester, J Bian, NJ Griskevich, WR Kropp, S Locke, S Mine, MB Smy, HW Sobel, V Takhistov, P Weatherly, J Hill, JY Kim, IT Lim, RG Park, B Bodur, K Scholberg, CW Walter, A Coffani, O Drapier, S El Hedri, M Gonin, Th A Mueller, P Paganini, T Ishizuka, T Nakamura, JS Jang, JG Learned, S Matsuno, RP Litchfield, AA Sztuc, Y Uchida, V Berardi, MG Catanesi, E Radicioni, NF Calabria, G De Rosa, G Collazuol, F Iacob, L Ludovici, Y Nishimura, S Cao, M Friend, T Hasegawa, T Ishida, T Kobayashi, T Nakadaira, K Nakamura, Y Oyama, K Sakashita, T Sekiguchi, T Tsukamoto, M Hasegawa, Y Isobe, H Miyabe, Y Nakano, T Shiozawa, T Sugimoto, AT Suzuki, Y Takeuchi, A Ali, Y Ashida, S Hirota, M Jiang, T Kikawa, M Mori, KE Nakamura, T Nakaya, RA Wendell, LHV Anthony, N McCauley, P Mehta, A Pritchard, KM Tsui, Y Fukuda, Y Itow, T Niwa, M Taani, M Tsukada, P Mijakowski, K Frankiewicz, CK Jung, C Vilela, MJ Wilking, C Yanagisawa, D Fukuda, M Harada, K Hagiwara, T Horai, H Ishino, S Ito, Y Koshio, M Sakuda, Y Takahira, C Xu, Y Kuno, D Barrow, L Cook, C Simpson, D Wark, F Nova, T Boschi, F Di Lodovico, S Molina Sedgwick, S Zsoldos, SB Kim, JY Yang, M Thiesse, L Thompson, H Okazawa, Y Choi, K Nishijima, M Koshiba, M Yokoyama, A Goldsack, K Martens, B Quilain, Y Suzuki, MR Vagins, M Kuze, T Yoshida, M Ishitsuka, R Matsumoto, K Ohta, JF Martin, CM Nantais, HA Tanaka, T Towstego, M Hartz, A Konaka, P de Perio, NW Prouse, S Chen, BD Xu, B Richards, B Jamieson, J Walker, A Minamino, K Okamoto, G Pintaudi

Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280

(2020)

Authors:

K Abe, N Akhlaq, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, T Arihara, Y Asada, Y Ashida, ET Atkin, Y Awataguchi, S Ban, M Barbi, GJ Barker, G Barr, D Barrow, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, L Berns, S Bhadra, S Bienstock, A Blondel, S Bolognesi, T Bonus, B Bourguille, SB Boyd, D Brailsford, A Bravar, D Bravo Berguño, C Bronner, S Bron, A Bubak, M Buizza Avanzini, J Calcutt, T Campbell, S Cao, SL Cartwright, MG Catanesi, A Cervera, A Chappell, C Checchia, D Cherdack, N Chikuma, G Christodoulou, M Cicerchia, J Coleman, G Collazuol, L Cook, D Coplowe, A Cudd, A Dabrowska, G De Rosa, T Dealtry, PF Denner, SR Dennis, C Densham, F Di Lodovico, N Dokania, S Dolan, TA Doyle, O Drapier, J Dumarchez, P Dunne, A Eguchi, L Eklund, S Emery-Schrenk, A Ereditato, P Fernandez, T Feusels, AJ Finch, GA Fiorentini, G Fiorillo, C Francois, M Friend, Y Fujii, R Fujita, D Fukuda, R Fukuda, Y Fukuda, K Fusshoeller, C Giganti, T Golan, M Gonin, A Gorin, M Guigue, DR Hadley, JT Haigh, P Hamacher-Baumann, M Hartz, T Hasegawa, S Hassani, NC Hastings, T Hayashino, Y Hayato, A Hiramoto, M Hogan, J Holeczek, NT Hong Van, T Honjo, F Iacob, AK Ichikawa, M Ikeda, T Ishida, T Ishii, M Ishitsuka, K Iwamoto, A Izmaylov, N Izumi, M Jakkapu, B Jamieson, SJ Jenkins, C Jesús-Valls, M Jiang, S Johnson, P Jonsson, CK Jung, PB Jurj, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, D Karlen, SP Kasetti, Y Kataoka, Y Katayama, T Katori, Y Kato, E Kearns, M Khabibullin, A Khotjantsev, T Kikawa, H Kikutani, H Kim, S King, J Kisiel, A Knight, A Knox, T Kobata, T Kobayashi, L Koch, T Koga, A Konaka, LL Kormos, Y Koshio, A Kostin, K Kowalik, H Kubo, Y Kudenko, N Kukita, S Kuribayashi, R Kurjata, T Kutter, M Kuze, L Labarga, J Lagoda, M Lamoureux, D Last, M Laveder, M Lawe, M Licciardi, T Lindner, RP Litchfield, SL Liu, X Li, A Longhin, L Ludovici, X Lu, T Lux, LN Machado, L Magaletti, K Mahn, M Malek, S Manly, L Maret, AD Marino, L Marti-Magro, JF Martin, T Maruyama, T Matsubara, K Matsushita, V Matveev, C Mauger, K Mavrokoridis, E Mazzucato, M McCarthy, N McCauley, J McElwee, KS McFarland, C McGrew, A Mefodiev, C Metelko, M Mezzetto, A Minamino, O Mineev, S Mine, M Miura, L Molina Bueno, S Moriyama, J Morrison, Th A Mueller, L Munteanu, S Murphy, Y Nagai, T Nakadaira, M Nakahata, Y Nakajima, A Nakamura, KG Nakamura, K Nakamura, Y Nakano, S Nakayama, T Nakaya, K Nakayoshi, C Nantais, CER Naseby, TV Ngoc, K Niewczas, K Nishikawa, Y Nishimura, E Noah, TS Nonnenmacher, F Nova, P Novella, J Nowak, JC Nugent, HM O'Keeffe, L O'Sullivan, T Odagawa, T Ogawa, R Okada, K Okumura, T Okusawa, SM Oser, RA Owen, Y Oyama, V Palladino, JL Palomino, V Paolone, M Pari, WC Parker, S Parsa, J Pasternak, P Paudyal, M Pavin, D Payne, GC Penn, L Pickering, C Pidcott, G Pintaudi, ES Pinzon Guerra, C Pistillo, B Popov, K Porwit, M Posiadala-Zezula, A Pritchard, B Quilain, T Radermacher, E Radicioni, B Radics, PN Ratoff, E Reinherz-Aronis, C Riccio, E Rondio, S Roth, A Rubbia, AC Ruggeri, C Ruggles, A Rychter, K Sakashita, F Sánchez, G Santucci, CM Schloesser, K Scholberg, J Schwehr, M Scott, Y Seiya, T Sekiguchi, H Sekiya, D Sgalaberna, R Shah, A Shaikhiev, F Shaker, A Shaykina, M Shiozawa, W Shorrock, A Shvartsman, K Skwarczynski, A Smirnov, M Smy, JT Sobczyk, H Sobel, FJP Soler, Y Sonoda, J Steinmann, S Suvorov, A Suzuki, SY Suzuki, Y Suzuki, AA Sztuc, M Tada, M Tajima, A Takeda, Y Takeuchi, HK Tanaka, HA Tanaka, S Tanaka, Y Tanihara, M Tani, N Teshima, LF Thompson, W Toki, C Touramanis, T Towstego, KM Tsui, T Tsukamoto, M Tzanov, Y Uchida, M Vagins, S Valder, Z Vallari, D Vargas, G Vasseur, C Vilela, WGS Vinning, T Vladisavljevic, VV Volkov, T Wachala, J Walker, JG Walsh, Y Wang, D Wark, MO Wascko, A Weber, R Wendell, MJ Wilking, C Wilkinson, JR Wilson, RJ Wilson, K Wood, C Wret, J Xia, Y Yamada, K Yamamoto, C Yanagisawa, G Yang, T Yano, K Yasutome, S Yen, N Yershov, M Yokoyama, T Yoshida, M Yu, A Zalewska, J Zalipska, K Zaremba, G Zarnecki, M Ziembicki, ED Zimmerman, M Zito, S Zsoldos, A Zykova

91̽��

David Wark

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Constraint on the matter-antimatter symmetry-violating phase in neutrino oscillations

Authors:

Abstract:

Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K

Authors:

Evaluation of gadolinium’s action on water Cherenkov detector systems with EGADS

Authors:

Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

Authors:

Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280

Authors:

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David Wark

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Constraint on the matter-antimatter symmetry-violating phase in neutrino oscillations

Authors:

Abstract:

Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K

Authors:

Evaluation of gadolinium’s action on water Cherenkov detector systems with EGADS

Authors:

Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

Authors:

Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280

Authors: