Publications


Search for electron antineutrino appearance in a long-baseline muon antineutrino beam

arXiv Cornell University (2019)

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, D Barrow, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, A Cervera

Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the PMNS mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40{\sigma} and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.


Measurement of the muon neutrino charged-current single $π^+$ production on hydrocarbon using the T2K off-axis near detector ND280

Physical Review D: Particles, Fields, Gravitation and Cosmology American Physical Society (2020)

K Abe, R Akutsu, A Ali, C Alt, J Amey, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, Y Ashida, ET Atkin, Y Awataguchi, Y Azuma, S Ban, M Barbi, GJ Barker, G Barr, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, S Berkman, RM Berner, L Berns, S Bhadra, S Bienstock, A Blondel, S Bolognesi, S Bordoni, B Bourguille, SB Boyd, D Brailsford, A Bravar, C Bronner, MB Avanzini, J Calcutt, RG Calland, T Campbell, S Cao, SL Cartwright, R Castillo, MG Catanesi, A Cervera, A Chappell, C Checchia, D Cherdack, N Chikuma, G Christodoulou, J Coleman, G Collazuol, L Cook, D Coplowe, A Cudd, A Dabrowska, GD Rosa, T Dealtry, PF Denner, SR Dennis, C Densham, FD Lodovico, N Dokania, S Dolan, O Drapier, KE Duy, J Dumarchez, P Dunne, 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 Gameil, A Garcia, C Giganti, F Gizzarelli, T Golan, M Gonin, A Gorin, M Guigue, DR Hadley, L Haegel, JT Haigh, P Hamacher-Baumann, D Hansen, J Harada, M Hartz, T Hasegawa, NC Hastings, T Hayashino, Y Hayato, A Hillairet, T Hiraki, A Hiramoto, S Hirota, M Hogan, J Holeczek, NTH Van, F Hosomi, K Huang, F Iacob, AK Ichikawa, M Ikeda, J Imber, T Inoue, J Insler, RA Intonti, T Ishida, T Ishii, M Ishitsuka, E Iwai, K Iwamoto, A Izmaylov, B Jamieson, SJ Jenkins, C Jesus-Valls, M Jiang, S Johnson, P Jonsson, CK Jung, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, D Karlen, Y Kataoka, T Katori, Y Kato, E Kearns, M Khabibullin, A Khotjantsev, H Kim, J Kim, S King, J Kisiel, A Knight, A Knox, T Kobayashi, L Koch, T Koga, PP Koller, A Konaka, LL Kormos, Y Koshio, K Kowalik, H Kubo, Y Kudenko, N Kukita, R Kurjata, T Kutter, M Kuze, L Labarga, J Lagoda, I Lamont, M Lamoureux, P Lasorak, M Laveder, M Lawe, M Licciardi, T Lindner, ZJ Liptak, RP Litcheld, SL Liu, X Li, A Longhin, JP Lopez, T Lou, L Ludovici, X Lu, T Lux, LN Machado, L Magaletti, K Mahn, M Malek, S Manly, L Maret, AD Marino, JF Martin, P Martins, S Martynenko, T Maruyama, T Matsubara, K Matsushita, V Matveev, K Mavrokoridis, WY Ma, E Mazzucato, M McCarthy, N McCauley, KS McFarland, C McGrew, A Mefodiev, C Metelko, M Mezzetto, A Minamino, O Mineev, S Mine, A Missert, M Miura, LM Bueno, S Moriyama, J Morrison, TA Mueller, L Munteanu, S Murphy, Y Nagai, T Nakadaira, M Nakahata, Y Nakajima, A Nakamura, KG Nakamura, K Nakamura, KD Nakamura, Y Nakanishi, S Nakayama, T Nakaya, K Nakayoshi, C Nantais, TV Ngoc, C Nielsen, K Niewczas, K Nishikawa, Y Nishimura, TS Nonnenmacher, F Nova, P Novella, J Nowak, JC Nugent, HM O'Keeffe, L O'Sullivan, K Okumura, T Okusawa, W Oryszczak, SMOT Ovsyannikova, RA Owen, Y Oyam, V Palladino, JL Palomino, V Paolone, WC Parker, ND Patel, P Paudyal, M Pavin, D Payne, GC Penn, YPL Pickering, C Pidcott, ESP Guerra, C Pistillo, BPK Porwit, M Posiadala-Zezula, JM Poutissou, A Pritchard, P Przewlocki, B Quilain, T Radermacher, E Radicioni, B Radics, PN Rato, MA Rayner, E Reinherz-Aronis, C Riccio, E Rondio, B Rossi, S Roth, A Rubbia, AC Ruggeri, A Rychter, K Sakashita, F Sanchez, S Sasaki, E Scantamburlo, CM Schloesser, K Scholberg, J Schwehr, M Scott, Y Seiya, T Sekiguchi, H Sekiya, D Sgalaberna, R Shah, A Shaikhiev, F Shaker, D Shaw, A Shaykina, M Shiozawa, T Shirahige, W Shorrock, A Shvartsman, A Smirnov, M Smy, JT Sobczyk, H Sobel, FJP Soler, Y Sonoda, J Steinmann, T Stewart, P Stowell, Y Suda, S Suvorov, A Suzuki, SY Suzuki, Y Suzuki, AA Sztuc, R Tacik, M Tada, A Takeda, Y Takeuchi, R Tamura, HK Tanaka, HA Tanaka, S Tanaka, T Thakore, LF Thompson, S Tobayama, W Toki, T Tomura, C Touramanis, KM Tsui, T Tsukamoto, M Tzanov, Y Uchida, W Uno, M Vagins, S Valder, Z Vallari, D Vargas, G Vasseur, C Vilela, WGS Vinning, T Vladisavljevic, VV Volkov, T Wachala, J Walker, JG Walsh, CW Walter, Y Wang, D Wark, MO Wascko, A Weber, R Wendell, MJ Wilking, C Wilkinson, JR Wilson, RJ Wilson, K Wood, C Wret, Y Yamada, K Yamamoto, S Yamasu, C Yanagisawa, G Yang, T Yano, K Yasutome, S Yen, N Yershov, M Yokoyama, T Yoshida, M Yu, A Zalewska, J Zalipska, L Zambelli, K Zaremba, G Zarnecki, M Ziembicki, ED Zimmerman, M Zito, S Zsoldos, A Zykova

We report the measurements of single and double differential cross section of muon neutrino charged-current interactions on carbon with a single positively charged pion in the final state at the T2K off-axis near detector using $5.56\times10^{20}$ protons on target. The analysis uses data control samples for the background subtraction and the cross section signal, defined as a single negatively charged muon and a single positively charged pion exiting from the target nucleus, is extracted using an unfolding method. The model dependent cross section, integrated over the T2K off-axis neutrino beam spectrum peaking at $0.6$~GeV, is measured to be $\sigma = (11.76 \pm 0.44 \text{(stat)} \pm 2.39 \text{(syst)}) \times 10^{-40} \text{cm}^2$~$\text{nucleon}^{-1}$. Various differential cross sections are measured, including the first measurement of the Adler angles for single charged pion production in neutrino interactions with heavy nuclei target.


Nuclear binding energy and transverse momentum imbalance in neutrino-nucleus reaction

arxiv (2019)
Part of a series from Arxiv

F Akbar, DA Andrade, MV Ascencio, L Bellantoni, A Bodek, JL Bonilla, MF Carneiro, D Coplowe, A Filkins, H Gallagher, A Ghosh, R Gran, DA Harris, S Henry, S Jena, J Kleykamp, M Kordosky, T Le, A Lozano, E Maher, S Manly, WA Mann, A Olivier, V Paolone

Observables based on the final state kinematic imbalances are measured in the mesonless production of $\nu_\mu+A\rightarrow\mu^-+p+X$ in the MINERvA tracker. Components of the muon-proton momentum imbalances parallel ($\delta p_{Ty}$) and perpendicular($\delta p_{Tx}$) to the momentum transfer in the transverse plane are found to be sensitive to the nuclear effects such as Fermi motion, binding energy and non-QE contributions. The QE peak location in $\delta p_{Ty}$ is particularly sensitive to the binding energy. Differential cross sections are compared to predictions from different neutrino interaction models. None of the Fermi gas models simultaneously describe every feature of the QE peak width, location, and non-QE contribution to the signal process. Correcting the GENIE's binding energy implementation according to theory causes better agreement with data. Hints of proton left-right asymmetry is observed in $\delta p_{Tx}$. Better modelling of the binding energy can reduce bias in neutrino energy reconstruction and these observables can be applied in current and future experiments to better constrain nuclear effects.


Search for sterile neutrinos in MINOS and MINOS+ using a two-detector fit

Physical Review Letters American Physical Society 122 (2019) 091803

P Adamson, I Anghel, A Aurisano, G Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, TJ Carroll, CM Castromonte, R Chen, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, JK De Jong, S De Rijck, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman

A search for mixing between active neutrinos and light sterile neutrinos has been performed by looking for muon neutrino disappearance in two detectors at baselines of 1.04 and 735 km, using a combined MINOS and MINOS+ exposure of 16.36 × 1020 protons on target. A simultaneous fit to the chargedcurrent muon neutrino and neutral-current neutrino energy spectra in the two detectors yields no evidence for sterile neutrino mixing using a 3 þ 1 model. The most stringent limit to date is set on the mixing parameter sin2 θ24 for most values of the sterile neutrino mass splitting Δm2 41 > 10−4 eV2.


Development of a Quality Assurance Process for the SoLid Experiment

Journal of Instrumentation IOP Publishing (2019)

Y Abreu, Y Amhis, G Ban, W Beaumont, S Binet, M Bongrand, D Boursette, BC Castle, H Chanal, K Clark, B Coupé, P Crochet, D Cussans, AD Roeck, D Durand, M Fallot, L Ghys, L Giot, K Graves, B Guillon, D Henaff, B Hosseini, S Ihantola, S Jenzer, S Kalcheva, LN Kalousis, M Labare, G Lehaut, S Manley, L Manzanillas, J Mermans, I Michiels, S Monteil, C Moortgat, D Newbold, J Park, V Pestel, K Petridis, I Piñera, L Popescu, D Ryckbosch, N Ryder, D Saunders, M-H Schune, M Settimo, L Simard, A Vacheret, G Vandierendonck, SV Dyck, PV Mulders, NV Remortel, S Vercaemer, M Verstraeten, B Viaud, A Weber, F Yermia

The SoLid experiment has been designed to search for an oscillation pattern induced by a light sterile neutrino state, utilising the BR2 reactor of SCK$\bullet$CEN, in Belgium. The detector leverages a new hybrid technology, utilising two distinct scintillators in a cubic array, creating a highly segmented detector volume. A combination of 5 cm cubic polyvinyltoluene cells, with $^6$LiF:ZnS(Ag) sheets on two faces of each cube, facilitate reconstruction of the neutrino signals. % The polyvinyltoluene scintillator is used as an $\overline{\nu}_e$ target for the inverse beta decay of ($\overline{\nu}_e + p \rightarrow e^{+}+n$), with the $^6$LiF:ZnS(Ag) sheets used for associated neutron detection. Scintillation signals are read out by a network of wavelength shifting fibres connected to multipixel photon counters. Whilst the high granularity provides a powerful toolset to discriminate backgrounds; by itself the segmentation also represents a challenge in terms of homogeneity and calibration, for a consistent detector response. The search for this light sterile neutrino implies a sensitivity to distortions of around $\mathcal{O}$(10)\% in the energy spectrum of reactor $\overline{\nu}_e$. Hence, a very good neutron detection efficiency, light yield and homogeneous detector response are critical for data validation. The minimal requirements for the SoLid physics program are a light yield and a neutron detection efficiency larger than 40 PA/MeV/cube and 50 \% respectively. In order to guarantee these minimal requirements, the collaboration developed a rigorous quality assurance process for all 12800 cubic cells of the detector. To carry out the quality assurance process, an automated calibration system called CALIPSO was designed and constructed.


Search for neutral-current induced single photon production at the ND280 near detector in T2K

Journal of Physics G: Nuclear and Particle Physics IOP Publishing 46 (2019) 08LT01

K Abe, G Barr, M Batkiewicz-Kwasniak, FD Lodovico, N Dokania, S Dolan, O Drapier, KE Duffy, S Emery-Schrenk, P Hamacher-Baumann, M Hartz, A Hiramoto, NTH Van, T Lindner, RP Litchfield, X Li, A Longhin, JP Lopez, T Lou, L Ludovici, X Lu, T Lux, L Magaletti, K Mahn, JF Martin

All rights reserved. Neutrino neutral-current (NC) induced single photon production is a subleading order process for accelerator-based neutrino beam experiments including T2K. It is, however, an important process to understand because it is a background for electron (anti)neutrino appearance oscillation experiments. Here, we performed the first search of this process below 1 GeV using the finegrained detector at the T2K ND280 off-axis near detector. By reconstructing single photon kinematics from electron positron pairs, we achieved 95% pure gamma ray sample from 5.738 1020 protons-on-targets neutrino mode data. We do not find positive evidence of NC induced single photon production in this sample. We set the model-dependent upper limit on the cross-section for this process, at 0.114 10-38 cm2 (90% C.L.) per nucleon, using the J-PARC off-axis neutrino beam with an average energy of .En. ~ 0.6 GeV. This is the first limit on this process below 1.GeV which is important for current and future oscillation experiments looking for electron neutrino appearance oscillation signals.


Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km

Phys. Rev. D99 (2019) 7

K Abe, others


Search for heavy neutrinos with the T2K near detector ND280

Phys. Rev. D100 (2019) 5

K Abe, others


Research and development for near detector systems towards long term evolution of ultra-precise long-baseline neutrino experiments

(2019)

AK Topaksu, E Blucher, B Andrieu, J Bian, B Roe, G Horton-Smith, Y Hayato, JA Caballero, J Sinclair, Y Kudenko, L Patrizi, L Stanco, M Tenti, GD Megias, N Jachowicz, O Benhar, G Ricciardi, S Roth, S Manly, M Stipcevi, D Meloni, I Ruiz, J Sobczyk, L Alvarez-Ruso, M Martini

With the discovery of non-zero value of θ13 mixing angle, the next generation of longbaseline neutrino (LBN) experiments offers the possibility of obtaining statistically significant samples of muon and electron neutrinos and anti-neutrinos with large oscillation effects. In this document we intend to highlight the importance of Near Detector facilities in LBN experiments to both constrain the systematic uncertainties affecting oscillation analyses but also to perform, thanks to their close location, measurements of broad benefit for LBN physics goals. A strong European contribution to these efforts is possible.


T2K ND280 Upgrade - Technical Design Report

(2019)

K Abe, H Aihara, A Ajmi, C Andreopoulos, M Antonova, S Aoki, Y Asada, C Pastore, M Pavin, D Payne, A Pepato, JD Perkin, F Pietropaolo, L Pickard, L Pickering, ESP Guerra, O Pizzirusso, B Popov, J Porthault, M Posiadala-Zezula, J-M Poutissou, R Poutissou, F Shaker, D Shaw, M Shiozawa

In this document, we present the Technical Design Report of the Upgrade of the T2K Near Detector ND280. The goal of this upgrade is to improve the Near Detector performance to measure the neutrino interaction rate and to constrain the neutrino interaction cross-sections so that the uncertainty in the number of predicted events at Super-Kamiokande is reduced to about 4%. This will allow to improve the physics reach of the T2K-II project. This goal is achieved by modifying the upstream part of the detector, adding a new highly granular scintillator detector (Super-FGD), two new TPCs (High-Angle TPC) and six TOF planes. Details about the detector concepts, design and construction methods are presented, as well as a first look at the test-beam data taken in Summer 2018. An update of the physics studies is also presented.


Commissioning and Operation of the Readout System for the SoLid Neutrino Detector

Journal of Instrumentation IOP Publishing (2019)

Y Abreu, Y Amhis, G Ban, W Beaumont, S Binet, M Bongrand, D Boursette, BC Castle, H Chanal, K Clark, B Coupé, P Crochet, D Cussans, AD Roeck, D Durand, M Fallot, L Ghys, L Giot, K Graves, B Guillon, D Henaff, B Hosseini, S Ihantola, S Jenzer, S Kalcheva, LN Kalousis, M Labare, G Lehaut, S Manley, L Manzanillas, J Mermans, I Michiels, S Monteil, C Moortgat, D Newbold, J Park, V Pestel, K Petridis, I Piñera, L Popescu, D Ryckbosch, N Ryder, D Saunders, M-H Schune, M Settimo, L Simard, A Vacheret, G Vandierendonck, SV Dyck, PV Mulders, NV Remortel, S Vercaemer, M Verstraeten, B Viaud, A Weber, F Yermia

The SoLid experiment aims to measure neutrino oscillation at a baseline of 6.4 m from the BR2 nuclear reactor in Belgium. Anti-neutrinos interact via inverse beta decay (IBD), resulting in a positron and neutron signal that are correlated in time and space. The detector operates in a surface building, with modest shielding, and relies on extremely efficient online rejection of backgrounds in order to identify these interactions. A novel detector design has been developed using 12800 5 cm cubes for high segmentation. Each cube is formed of a sandwich of two scintillators, PVT and 6LiF:ZnS(Ag), allowing the detection and identification of positrons and neutrons respectively. The active volume of the detector is an array of cubes measuring 80x80x250 cm (corresponding to a fiducial mass of 1.6 T), which is read out in layers using two dimensional arrays of wavelength shifting fibres and silicon photomultipliers, for a total of 3200 readout channels. Signals are recorded with 14 bit resolution, and at 40 MHz sampling frequency, for a total raw data rate of over 2 Tbit/s. In this paper, we describe a novel readout and trigger system built for the experiment, that satisfies requirements on: compactness, low power, high performance, and very low cost per channel. The system uses a combination of high price-performance FPGAs with a gigabit Ethernet based readout system, and its total power consumption is under 1 kW. The use of zero suppression techniques, combined with pulse shape discrimination trigger algorithms to detect neutrons, results in an online data reduction factor of around 10000. The neutron trigger is combined with a large per-channel history time buffer, allowing for unbiased positron detection. The system was commissioned in late 2017, with successful physics data taking established in early 2018.


Measurement of neutrino and antineutrino neutral-current quasielastic-like interactions on oxygen by detecting nuclear de-excitation $γ$-rays

Physical Review D: Particles, Fields, Gravitation and Cosmology American Physical Society (2019)

K Abe, R Akutsu, A Ali, C Alt, C Andreopoulos, L Anthony, M Antonova, S Aoki, A Ariga, 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, MG Catanesi, A Cervera, A Chappell, C Checchia, D Cherdack, N Chikuma, G Christodoulou, J Coleman, G Collazuol, L Cook, D Coplowe, A Cudd, A Dabrowska, GD Rosa, T Dealtry, PF Denner, SR Dennis, C Densham, FD Lodovico, N Dokania, S Dolan, O Drapier, J Dumarchez, P Dunne, 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 Gameil, C Giganti, T Golan, M Gonin, A Gorin, M Guigue, DR Hadley, JT Haigh, P Hamacher-Baumann, M Hartz, T Hasegawa, NC Hastings, T Hayashino, Y Hayato, A Hiramoto, M Hogan, J Holeczek, NTH Van, F Iacob, AK Ichikawa, M Ikeda, T Ishida, T Ishii, M Ishitsuka, K Iwamoto, A Izmaylov, B Jamieson, SJ Jenkins, C Jesús-Valls, M Jiang, S Johnson, P Jonsson, CK Jung, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, D Karlen, SP Kasetti, Y Kataoka, T Katori, Y Kato, E Kearns, M Khabibullin, A Khotjantsev, T Kikawa, H Kim, J Kim, S King, J Kisiel, A Knight, A Knox, T Kobayashi, L Koch, T Koga, A Konaka, LL Kormos, Y Koshio, K Kowalik, H Kubo, Y Kudenko, N Kukita, S Kuribayashi, R Kurjata, T Kutter, M Kuze, L Labarga, J Lagoda, M Lamoureux, 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, JF Martin, T Maruyama, T Matsubara, K Matsushita, V Matveev, K Mavrokoridis, E Mazzucato, M McCarthy, N McCauley, KS McFarland, C McGrew, A Mefodiev, C Metelko, M Mezzetto, A Minamino, O Mineev, S Mine, M Miura, LM Bueno, S Moriyama, J Morrison, TA Mueller, L Munteanu, S Murphy, Y Nagai, T Nakadaira, M Nakahata, Y Nakajima, A Nakamura, KG Nakamura, K Nakamura, S Nakayama, T Nakaya, K Nakayoshi, C Nantais, TV Ngoc, K Niewczas, K Nishikawa, Y Nishimura, TS Nonnenmacher, F Nova, P Novella, J Nowak, JC Nugent, HM O'Keeffe, L O'Sullivan, T Odagawa, K Okumura, T Okusawa, SM Oser, RA Owen, Y Oyama, V Palladino, JL Palomino, V Paolone, WC Parker, P Paudyal, M Pavin, D Payne, GC Penn, L Pickering, C Pidcott, ESP 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, A Rychter, K Sakashita, F Sánchez, 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, 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, LF Thompson, W Toki, C Touramanis, KM Tsui, T Tsukamoto, M Tzanov, Y Uchida, W Uno, 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, 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

Neutrino- and antineutrino-oxygen neutral-current quasielastic-like interactions are measured at Super-Kamiokande using nuclear de-excitation $\gamma$-rays to identify signal-like interactions in data from a $14.94 \ (16.35)\times 10^{20}$ protons-on-target exposure of the T2K neutrino (antineutrino) beam. The measured flux-averaged cross sections on oxygen nuclei are $\langle \sigma_{\nu {\rm -NCQE}} \rangle = 1.70 \pm 0.17 ({\rm stat.}) ^{+ {\rm 0.51}}_{- {\rm 0.38}} ({\rm syst.}) \times 10^{-38} \ {\rm cm^2/oxygen}$ with a flux-averaged energy of 0.82 GeV and $\langle \sigma_{\bar{\nu} {\rm -NCQE}} \rangle = 0.98 \pm 0.16 ({\rm stat.}) ^{+ {\rm 0.26}}_{- {\rm 0.19}} ({\rm syst.}) \times 10^{-38} \ {\rm cm^2/oxygen}$ with a flux-averaged energy of 0.68 GeV, for neutrinos and antineutrinos, respectively. These results are the most precise to date, and the antineutrino result is the first cross section measurement of this channel. They are compared with various theoretical predictions. The impact on evaluation of backgrounds to searches for supernova relic neutrinos at present and future water Cherenkov detectors is also discussed.


J-PARC neutrino beamline upgrade technical design report

arXiv Cornell University (2019)

K Abe, H Aihara, A Ajmi, C Andreopoulos, C Alt, M Antonova, S Aoki, Y Asada, Y Ashida, A Atherton, E Atkin, S Ban, FCT Barbato, M Barbi, GJ Barker, G Barr, M Batkiewicz, A Beloshapkin, V Berardi, L Berns, S Bhadra, J Bian, S Bienstock, A Blondel, S Bolognesi

In this document, technical details of the upgrade plan of the J-PARC neutrino beamline for the extension of the T2K experiment are described. T2K has proposed to accumulate data corresponding to $2\times{}10^{22}$ protons-on-target in the next decade, aiming at an initial observation of CP violation with $3\sigma$ or higher significance in the case of maximal CP violation. Methods to increase the neutrino beam intensity, which are necessary to achieve the proposed data increase, are described.


Characterization of nuclear effects in muon-neutrino scattering on hydrocarbon with a measurement of final-state kinematics and correlations in charged-current pionless interactions at T2K

Phys. Rev. D98 (2019) 3

K Abe, others


Performance of a full scale prototype detector at the BR2 reactor for the SoLid experiment

JOURNAL OF INSTRUMENTATION 13 (2018) ARTN P05005

Y Abreu, Y Amhis, L Arnold, G Ban, W Beaumont, M Bongrand, D Boursette, BC Castle, K Clark, B Coupe, D Cussans, A De Roeck, J D'Hondt, D Durand, M Fallot, L Ghys, L Giot, B Guillon, S Ihantola, X Janssen, S Kalcheva, LN Kalousis, E Koonen, M Labare, G Lehaut, L Manzanillas, J Mermans, I Michiels, C Moortgat, D Newbold, J Park, V Pestel, K Petridis, I Pinera, G Pommery, L Popescu, G Pronost, J Rademacker, D Ryckbosch, N Ryder, D Saunders, M-H Schune, L Simard, A Vacheret, S Van Dyck, P Van Mulders, N van Remortel, S Vercaemer, M Verstraeten, A Weber, F Yermia, S Collaboration


First measurement of the $ν_μ$ charged-current cross section on a water target without pions in the final state

Phys. Rev. D97 (2018) 1

K Abe, others


Measurement of inclusive double-differential $ν_μ$ charged-current cross section with improved acceptance in the T2K off-axis near detector

Phys. Rev. D98 (2018) 012004-012004

K Abe, others


Measurement of final-state correlations in neutrino muon-proton mesonless production on hydrocarbon at $\langle E_ν\rangle=3$ GeV

Phys. Rev. Lett. 121 (2018) 2

XG Lu, others


Physics potentials with the second Hyper-Kamiokande detector in Korea

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS (2018) ARTN 063C01

K Abe, K Abe, SH Ahn, H Aihara, A Aimi, R Akutsu, C Andreopoulos, I Anghel, LHV Anthony, M Antonova, Y Ashida, V Aushev, M Barbi, GJ Barker, G Barr, P Beltrame, V Berardi, M Bergevin, S Berkman, L Berns, T Berry, S Bhadra, FDM Blaszczyk, A Blondel, S Bolognesi, SB Boyd, A Bravar, C Bronner, MB Avanzini, FS Cafagna, R Calland, S Cao, SL Cartwright, MG Catanesi, C Checchia, Z Chen-Wishart, BG Cheon, MK Cheoun, K Cho, JH Choi, K Choi, KY Choi, EJ Chun, A Cole, J Coleman, G Collazuol, G Cowan, L Cremonesi, T Dealtry, G De Rosa, C Densham, D Dewhurst, E Drakopoulou, F Di Lodovico, O Drapier, J Dumarchez, P Dunne, M Dziewiecki, S Emery, A Esmaili, A Evangelisti, E Fernandez-Martinez, T Feusels, A Finch, GA Fiorentini, G Fiorillo, M Fitton, K Frankiewicz, M Friend, Y Fujii, Y Fukuda, D Fukuda, K Ganezer, M Ghosh, C Giganti, M Gonin, N Grant, P Gumplinger, DR Hadley, B Hartfiel, M Hartz, Y Hayato, K Hayrapetyan, J Hill, S Hirota, S Horiuchi, AK Ichikawa, T Iijima, M Ikeda, J Imber, K Inoue, J Insler, RA Intonti, A Ioannisian, T Ishida, H Ishino, M Ishitsuka, Y Itow, K Iwamoto, A Izmaylov, B Jamieson, HI Jang, JS Jang, SH Jeon, KS Jeong, M Jiang, P Jonsson, KK Joo, A Kaboth, C Kachulis, T Kajita, SK Kang, J Kameda, Y Kataoka, T Katori, K Kayrapetyan, E Kearns, M Khabibullin, A Khotjantsev, CS Kim, HB Kim, HJ Kim, JH Kim, J-S Kim, JY Kim, SB Kim, SC Kim, S-W Kim, SY Kim, TJ Kim, W Kim, S King, Y Kishimoto, P Ko, T Kobayashi, M Koga, A Konaka, LL Kormos, Y Koshio, A Korzenev, KL Kowalik, WR Kropp, Y Kudenko, R Kurjata, T Kutter, M Kuze, K Kwak, EH Kwon, L Labarga, J Lagoda, PJJ Lasorak, M Laveder, M Lawe, JG Learned, CH Lee, SJ Lee, WJ Lee, IT Lim, T Lindner, RP Litchfield, A Longhin, P Loverre, T Lou, L Ludovici, W Ma, L Magaletti, K Mahn, M Malek, L Maret, C Mariani, K Martens, L Marti, JF Martin, J Marzec, S Matsuno, E Mazzucato, M McCarthy, N McCauley, KS McFarland, C McGrew, A Mefodiev, P Mermod, C Metelko, M Mezzetto, J Migenda, P Mijakowski, H Minakata, A Minamino, S Mine, O Mineev, A Mitra, M Miura, T Mochizuki, J Monroe, CS Moon, DH Moon, S Moriyama, T Mueller, F Muheim, K Murase, F Muto, M Nakahata, Y Nakajima, K Nakamura, T Nakaya, S Nakayama, C Nantais, M Needham, T Nicholls, Y Nishimura, E Noah, F Nova, J Nowak, H Nunokawa, Y Obayashi, YD Oh, Y Oh, HM O'Keeffe, Y Okajima, K Okumura, Y Onishchuk, E O'Sullivan, L O'Sullivan, T Ovsiannikova, RA Owen, Y Oyama, J Perez, MY Pac, V Palladino, JL Palomino, V Paolone, HS Park, JC Park, MG Park, SC Park, W Parker, S Parsa, D Payne, JD Perkin, C Pidcott, EP Guerra, S Playfer, B Popov, M Posiadala-Zezula, J-M Poutissou, A Pritchard, NW Prouse, G Pronost, P Przewlocki, B Quilain, M Quinto, E Radicioni, PN Ratoff, F Retiere, C Riccio, B Richards, E Rondio, HJ Rose, C Rott, SD Rountree, AC Ruggeri, A Rychter, D Ryu, R Sacco, M Sakuda, MC Sanchez, E Scantamburlo, M Scott, SM Sedgwick, Y Seiya, T Sekiguchi, H Sekiya, H Seo, SH Seo, D Sgalaberna, R Shah, A Shaikhiev, I Shimizu, M Shiozawa, Y Shitov, S Short, C Simpson, G Sinnis, MB Smy, S Snow, J Sobczyk, HW Sobel, DC Son, Y Sonoda, R Spina, T Stewart, JL Stone, Y Suda, Y Suwa, Y Suzuki, AT Suzuki, R Svoboda, M Taani, R Tacik, A Takeda, A Takenaka, A Taketa, Y Takeuchi, V Takhistov, HA Tanaka, HKM Tanaka, H Tanaka, R Terri, M Thiesse, LF Thompson, M Thorpe, S Tobayama, C Touramanis, T Towstego, T Tsukamoto, KM Tsui, M Tzanov, Y Uchida, MR Vagins, G Vasseur, C Vilela, RB Vogelaar, J Walding, J Walker, M Ward, D Wark, MO Wascko, A Weber, R Wendell, RJ Wilkes, MJ Wilking, JR Wilson, E Won, T Xin, K Yamamoto, C Yanagisawa, T Yano, O Yasuda, S Yen, N Yershov, DN Yeum, M Yokoyama, HD Yoo, J Yoo, SC Yoon, TS Yoon, T Yoshida, I Yu, M Yu, J Zalipska, K Zaremba, M Ziembicki, M Zito, S Zsoldos


Measurement of the single $π^0$ production rate in neutral current neutrino interactions on water

Phys. Rev. D97 (2018) 3

K Abe, others

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