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1. Phosphoproteomic analysis of neoadjuvant breast cancer suggests that increased sensitivity to paclitaxel is driven by CDK4 and filamin A

Author

S. Mouron, M. J. Bueno, A. Lluch, L. Manso, I. Calvo, J. Cortes, J. A. Garcia-Saenz, M. Gil-Gil, N. Martinez-Janez, J. V. Apala, E. Caleiras, Pilar Ximénez-Embún, J. Muñoz, L. Gonzalez-Cortijo, R. Murillo, R. Sánchez-Bayona, J. M. Cejalvo, G. Gómez-López, C. Fustero-Torre, S. Sabroso-Lasa, N. Malats, M. Martinez, A. Moreno, D. Megias, M. Malumbres, R. Colomer, and M. Quintela-Fandino

Subjects
Science
Abstract

Phosphoproteomics is a promising tool for identifying biomarkers of treatment response in cancer. Here, the authors analyse proteomics profiling of HER2-negative female breast cancer patients and identify potential predictors of paclitaxel response.

Published
2022
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2. Measurements of neutrino oscillation parameters from the T2K experiment using $$3.6\times 10^{21}$$ 3.6 × 10 21 protons on target

Author

K. Abe, N. Akhlaq, R. Akutsu, A. Ali, S. Alonso Monsalve, C. Alt, C. Andreopoulos, M. Antonova, S. Aoki, T. Arihara, Y. Asada, Y. Ashida, E. T. Atkin, M. Barbi, G. J. Barker, G. Barr, D. Barrow, M. Batkiewicz-Kwasniak, F. Bench, V. Berardi, L. Berns, S. Bhadra, A. Blanchet, A. Blondel, S. Bolognesi, T. Bonus, S. Bordoni, S. B. Boyd, A. Bravar, C. Bronner, S. Bron, A. Bubak, M. Buizza Avanzini, J. A. Caballero, N. F. Calabria, S. Cao, D. Carabadjac, A. J. Carter, S. L. Cartwright, M. G. Catanesi, A. Cervera, J. Chakrani, D. Cherdack, P. S. Chong, G. Christodoulou, A. Chvirova, M. Cicerchia, J. Coleman, G. Collazuol, L. Cook, A. Cudd, C. Dalmazzone, T. Daret, Yu. I. Davydov, A. De Roeck, G. De Rosa, T. Dealtry, C. C. Delogu, C. Densham, A. Dergacheva, F. Di Lodovico, S. Dolan, D. Douqa, T. A. Doyle, O. Drapier, J. Dumarchez, P. Dunne, K. Dygnarowicz, A. Eguchi, S. Emery-Schrenk, G. Erofeev, A. Ershova, G. Eurin, D. Fedorova, S. Fedotov, M. Feltre, A. J. Finch, G. A. Fiorentini Aguirre, G. Fiorillo, M. D. Fitton, J. M. Franco Patiño, M. Friend, Y. Fujii, Y. Fukuda, K. Fusshoeller, L. Giannessi, C. Giganti, V. Glagolev, M. Gonin, J. González Rosa, E. A. G. Goodman, A. Gorin, M. Grassi, M. Guigue, D. R. Hadley, J. T. Haigh, P. Hamacher-Baumann, D. A. Harris, M. Hartz, T. Hasegawa, S. Hassani, N. C. Hastings, Y. Hayato, D. Henaff, A. Hiramoto, M. Hogan, J. Holeczek, A. Holin, T. Holvey, N. T. Hong Van, T. Honjo, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, M. Ishitsuka, H. T. Israel, K. Iwamoto, A. Izmaylov, N. Izumi, M. Jakkapu, B. Jamieson, S. J. Jenkins, C. Jesús-Valls, J. J. Jiang, P. Jonsson, S. Joshi, C. K. Jung, P. B. Jurj, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, S. P. Kasetti, Y. Kataoka, Y. Katayama, T. Katori, M. Kawaue, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kikutani, S. King, V. Kiseeva, J. Kisiel, T. Kobata, H. Kobayashi, T. Kobayashi, L. Koch, S. Kodama, A. Konaka, L. L. Kormos, Y. Koshio, A. Kostin, T. Koto, K. Kowalik, Y. Kudenko, Y. Kudo, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, M. La Commara, L. Labarga, K. Lachner, J. Lagoda, S. M. Lakshmi, M. Lamers James, M. Lamoureux, A. Langella, J.-F. Laporte, D. Last, N. Latham, M. Laveder, L. Lavitola, M. Lawe, Y. Lee, C. Lin, S.-K. Lin, R. P. Litchfield, S. L. Liu, W. Li, A. Longhin, K. R. Long, A. Lopez Moreno, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, M. Mandal, S. Manly, A. D. Marino, L. Marti-Magro, D. G. R. Martin, M. Martini, J. F. Martin, T. Maruyama, T. Matsubara, V. Matveev, C. Mauger, K. Mavrokoridis, E. Mazzucato, N. McCauley, J. McElwee, K. S. McFarland, C. McGrew, J. McKean, A. Mefodiev, G. D. Megias, P. Mehta, L. Mellet, C. Metelko, M. Mezzetto, E. Miller, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, P. Morrison, Th. A. Mueller, D. Munford, L. Munteanu, K. Nagai, Y. Nagai, T. Nakadaira, K. Nakagiri, M. Nakahata, Y. Nakajima, A. Nakamura, H. Nakamura, K. Nakamura, K. D. Nakamura, Y. Nakano, S. Nakayama, T. Nakaya, K. Nakayoshi, C. E. R. Naseby, T. V. Ngoc, V. Q. Nguyen, K. Niewczas, S. Nishimori, Y. Nishimura, K. Nishizaki, T. Nosek, F. Nova, P. Novella, J. C. Nugent, H. M. O’Keeffe, L. O’Sullivan, T. Odagawa, T. Ogawa, R. Okada, W. Okinaga, K. Okumura, T. Okusawa, N. Ospina, R. A. Owen, Y. Oyama, V. Palladino, V. Paolone, M. Pari, J. Parlone, S. Parsa, J. Pasternak, M. Pavin, D. Payne, G. C. Penn, D. Pershey, L. Pickering, C. Pidcott, G. Pintaudi, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, Y. S. Prabhu, F. Pupilli, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, M. A. Ramírez, P. N. Ratoff, M. Reh, C. Riccio, E. Rondio, S. Roth, N. Roy, A. Rubbia, A. C. Ruggeri, C. A. Ruggles, A. Rychter, K. Sakashita, F. Sánchez, G. Santucci, C. M. Schloesser, K. Scholberg, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, A. Shaikhiev, F. Shaker, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, N. Skrobova, K. Skwarczynski, D. Smyczek, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, A. J. Speers, R. Spina, I. A. Suslov, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, S. Tairafune, S. Takayasu, A. Takeda, Y. Takeuchi, K. Takifuji, H. K. Tanaka, Y. Tanihara, M. Tani, A. Teklu, V. V. Tereshchenko, N. Teshima, N. Thamm, L. F. Thompson, W. Toki, C. Touramanis, T. Towstego, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, M. Vagins, D. Vargas, M. Varghese, G. Vasseur, C. Vilela, E. Villa, W. G. S. Vinning, U. Virginet, T. Vladisavljevic, T. Wachala, J. G. Walsh, Y. Wang, L. Wan, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, K. Wood, C. Wret, J. Xia, Y.-H. Xu, K. Yamamoto, T. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, N. Yershov, U. Yevarouskaya, M. Yokoyama, Y. Yoshimoto, N. Yoshimura, M. Yu, R. Zaki, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, X. Zhao, T. Zhu, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, and T2K Collaboration

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract The T2K experiment presents new measurements of neutrino oscillation parameters using $$19.7(16.3)\times 10^{20}$$ 19.7 ( 16.3 ) × 10 20 protons on target (POT) in (anti-)neutrino mode at the far detector (FD). Compared to the previous analysis, an additional $$4.7\times 10^{20}$$ 4.7 × 10 20 POT neutrino data was collected at the FD. Significant improvements were made to the analysis methodology, with the near-detector analysis introducing new selections and using more than double the data. Additionally, this is the first T2K oscillation analysis to use NA61/SHINE data on a replica of the T2K target to tune the neutrino flux model, and the neutrino interaction model was improved to include new nuclear effects and calculations. Frequentist and Bayesian analyses are presented, including results on $$\sin ^2\theta _{13}$$ sin 2 θ 13 and the impact of priors on the $$\delta _{\textrm{CP}}$$ δ CP measurement. Both analyses prefer the normal mass ordering and upper octant of $$\sin ^2\theta _{23}$$ sin 2 θ 23 with a nearly maximally CP-violating phase. Assuming the normal ordering and using the constraint on $$\sin ^2\theta _{13}$$ sin 2 θ 13 from reactors, $$\sin ^2\theta _{23}=0.561^{+0.021}_{-0.032}$$ sin 2 θ 23 = 0 . 561 - 0.032 + 0.021 using Feldman–Cousins corrected intervals, and $$\varDelta {}m^2_{32}=2.494_{-0.058}^{+0.041}\times 10^{-3}~\text {eV}^2$$ Δ m 32 2 = 2 . 494 - 0.058 + 0.041 × 10 - 3 eV 2 using constant $$\varDelta \chi ^{2}$$ Δ χ 2 intervals. The CP-violating phase is constrained to $$\delta _{\textrm{CP}}=-1.97_{-0.70}^{+0.97}$$ δ CP = - 1 . 97 - 0.70 + 0.97 using Feldman–Cousins corrected intervals, and $$\delta _{\textrm{CP}}=0,\pi $$ δ CP = 0 , π is excluded at more than 90% confidence level. A Jarlskog invariant of zero is excluded at more than $$2\sigma $$ 2 σ credible level using a flat prior in $$\delta _{\textrm{CP}},$$ δ CP , and just below $$2\sigma $$ 2 σ using a flat prior in $$\sin \delta _{\textrm{CP}}.$$ sin δ CP . When the external constraint on $$\sin ^2\theta _{13}$$ sin 2 θ 13 is removed, $$\sin ^2\theta _{13}=28.0^{+2.8}_{-6.5}\times 10^{-3},$$ sin 2 θ 13 = 28 . 0 - 6.5 + 2.8 × 10 - 3 , in agreement with measurements from reactor experiments. These results are consistent with previous T2K analyses.

Published
2023
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3. Combined Analysis of Neutrino and Antineutrino Charged Current Inclusive Interactions

Author

Juan M. Franco-Patino, Alejandro N. Gacino-Olmedo, Jesus Gonzalez-Rosa, Stephen J. Dolan, Guillermo D. Megias, Laura Munteanu, Maria B. Barbaro, and Juan A. Caballero

Subjects
weak interactions, neutrino oscillations, asymmetry, neutrino interactions, neutrino cross sections, long-baseline neutrino experiments, Mathematics, QA1-939
Abstract

This paper presents a combined analysis of muon neutrino and antineutrino charged-current cross sections at kinematics of relevance for the T2K, MINERvA and MicroBooNE experiments. We analyze the sum, difference and asymmetry of neutrino versus antineutrino cross sections in order to get a better understanding of the nuclear effects involved in these processes. Nuclear models based on the superscaling behavior and the relativistic mean field theory are applied, covering a wide range of kinematics, from hundreds of MeV to several GeV, and the relevant nuclear regimes, i.e., from quasileastic reactions to deep inelastic scattering processes. The NEUT neutrino-interaction event generator, used in neutrino oscillation experiments, is also applied to the analysis of the quasielastic channel via local Fermi gas and spectral function approaches.

Published
2024
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4. Search for Astrophysical Electron Antineutrinos in Super-Kamiokande with 0.01% Gadolinium-loaded Water

Author

M. Harada, K. Abe, C. Bronner, Y. Hayato, K. Hiraide, K. Hosokawa, K. Ieki, M. Ikeda, J. Kameda, Y. Kanemura, R. Kaneshima, Y. Kashiwagi, Y. Kataoka, S. Miki, S. Mine, M. Miura, S. Moriyama, Y. Nakano, M. Nakahata, S. Nakayama, Y. Noguchi, K. Okamoto, K. Sato, H. Sekiya, H. Shiba, K. Shimizu, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, A. Takenaka, H. Tanaka, S. Watanabe, T. Yano, S. Han, T. Kajita, K. Okumura, T. Tashiro, T. Tomiya, X. Wang, S. Yoshida, G. D. Megias, P. Fernandez, L. Labarga, N. Ospina, B. Zaldivar, B. W. Pointon, E. Kearns, J. L. Raaf, L. Wan, T. Wester, J. Bian, N. J. Griskevich, S. Locke, M. B. Smy, H. W. Sobel, V. Takhistov, A. Yankelevich, J. Hill, S. H. Lee, D. H. Moon, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, A. Beauchêne, O. Drapier, A. Giampaolo, Th. A. Mueller, A. D. Santos, P. Paganini, B. Quilain, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, K. Choi, N. Iovine, S. Cao, L. H. V. Anthony, D. Martin, M. Scott, A. A. Sztuc, Y. Uchida, V. Berardi, M. G. Catanesi, E. Radicioni, N. F. Calabria, A. Langella, L. N. Machado, G. De Rosa, G. Collazuol, F. Iacob, M. Lamoureux, M. Mattiazzi, L. Ludovici, M. Gonin, G. Pronost, C. Fujisawa, Y. Maekawa, Y. Nishimura, R. Okazaki, R. Akutsu, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, M. Jakkapu, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, N. Bhuiyan, G. T. Burton, F. Di Lodovico, J. Gao, A. Goldsack, T. Katori, J. Migenda, Z. Xie, S. Zsoldos, Y. Kotsar, H. Ozaki, A. T. Suzuki, Y. Takagi, Y. Takeuchi, J. Feng, L. Feng, J. R. Hu, Z. Hu, T. Kikawa, M. Mori, T. Nakaya, R. A. Wendell, K. Yasutome, S. J. Jenkins, N. McCauley, P. Mehta, A. Tarrant, Y. Fukuda, Y. Itow, H. Menjo, K. Ninomiya, J. Lagoda, S. M. Lakshmi, M. Mandal, P. Mijakowski, Y. S. Prabhu, J. Zalipska, M. Jia, J. Jiang, C. K. Jung, M. J. Wilking, C. Yanagisawa, Y. Hino, H. Ishino, H. Kitagawa, Y. Koshio, F. Nakanishi, S. Sakai, T. Tada, T. Tano, G. Barr, D. Barrow, L. Cook, S. Samani, D. Wark, A. Holin, F. Nova, B. S. Yang, J. Y. Yang, J. Yoo, J. E. P. Fannon, L. Kneale, M. Malek, J. M. McElwee, M. D. Thiesse, L. F. Thompson, S. T. Wilson, H. Okazawa, S. B. Kim, E. Kwon, J. W. Seo, I. Yu, A. K. Ichikawa, K. D. Nakamura, S. Tairafune, K. Nishijima, K. Nakagiri, Y. Nakajima, S. Shima, N. Taniuchi, E. Watanabe, M. Yokoyama, P. de Perio, K. Martens, K. M. Tsui, M. R. Vagins, J. Xia, M. Kuze, S. Izumiyama, R. Matsumoto, M. Ishitsuka, H. Ito, T. Kinoshita, Y. Ommura, N. Shigeta, M. Shinoki, T. Suganuma, K. Yamauchi, J. F. Martin, H. A. Tanaka, T. Towstego, R. Gaur, V. Gousy-Leblanc, M. Hartz, A. Konaka, X. Li, N. W. Prouse, S. Chen, B. D. Xu, B. Zhang, M. Posiadala-Zezula, S. B. Boyd, R. Edwards, D. Hadley, M. Nicholson, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, Ll. Marti, A. Minamino, G. Pintaudi, S. Sano, S. Suzuki, K. Wada, and The Super-Kamiokande Collaboration

Subjects
Supernova neutrinos, Neutrino astronomy, Astrophysics, QB460-466
Abstract

We report the first search result for the flux of astrophysical electron antineutrinos for energies ${ \mathcal O }(10)\,\mathrm{MeV}$ in the gadolinium-loaded Super-Kamiokande (SK) detector. In 2020 June, gadolinium was introduced to the ultrapure water of the SK detector in order to detect neutrons more efficiently. In this new experimental phase, SK-Gd, we can search for electron antineutrinos via inverse beta decay with efficient background rejection thanks to the high efficiency of the neutron tagging technique. In this paper, we report the result for the initial stage of SK-Gd, during 2020 August 26, and 2022 June 1 with a 22.5 × 552 kton · day exposure at 0.01% Gd mass concentration. No significant excess over the expected background in the observed events is found for the neutrino energies below 31.3 MeV. Thus, the flux upper limits are placed at the 90% confidence level. The limits and sensitivities are already comparable with the previous SK result with pure water (22.5 × 2970 kton · day) owing to the enhanced neutron tagging. Operation with Gd increased to 0.03% started in 2022 June.

Published
2023
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5. Weak Neutrino (Antineutrino) Charged-Current Responses and Scaling for Nuclear Matter in the Relativistic Mean Field

Author

Sara Cruz-Barrios, Guillermo D. Megias, and Juan A. Caballero

Subjects
neutrino interactions, electroweak interactions, nuclear matter, scaling, relativistic mean field, Elementary particle physics, QC793-793.5
Abstract

A systematic analysis of the weak responses for charged-current quasielastic neutrino-nucleus reactions is presented within the scheme of a fully relativistic microscopic model considering momentum-dependent scalar and vector mean field potentials in both the initial and final nucleon states. The responses obtained are compared with the ones corresponding to simpler approaches: energy-independent potentials and the relativistic plane wave limit in the final state, i.e., no potentials applied to the outgoing particle. The analysis is also extended to the scaling phenomenon, which provides additional information regarding nuclear dynamics. Results for the scaling function are shown for various nuclei and different values of the transferred momentum in order to analyze the behavior of the relativistic scalar and vector mean field potentials.

Published
2023
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7. Search for supernova bursts in Super-Kamiokande IV

Author

M. Mori, K. Abe, Y. Hayato, K. Hiraide, K. Ieki, M. Ikeda, S. Imaizumi, J. Kameda, Y. Kanemura, R. Kaneshima, Y. Kashiwagi, Y. Kataoka, S. Miki, S. Mine, M. Miura, S. Moriyama, Y. Nagao, M. Nakahata, Y. Nakano, S. Nakayama, Y. Noguchi, T. Okada, K. Okamoto, A. Orii, K. Sato, H. Sekiya, H. Shiba, K. Shimizu, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, A. Takenaka, H. Tanaka, T. Tomiya, S. Watanabe, T. Yano, S. Yoshida, S. Han, T. Kajita, K. Okumura, T. Tashiro, X. Wang, J. Xia, G. D. Megias, D. Bravo-Berguño, P. Fernandez, L. Labarga, N. Ospina, B. Zaldivar, S. Zsoldos, B. W. Pointon, F. D. M. Blaszczyk, E. Kearns, J. L. Raaf, J. L. Stone, L. Wan, T. Wester, J. Bian, N. J. Griskevich, W. R. Kropp, S. Locke, M. B. Smy, H. W. Sobel, V. Takhistov, Yankelevich A., J. Hill, J. Y. Kim, I. T. Lim, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, L. Bernard, A. Coffani, O. Drapier, S. El Hedri, A. Giampaolo, Th. A. Mueller, P. Paganini, B. Quilain, A. D. Santos, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, L. H. V. Anthony, D. Martin, M. Scott, A. A. Sztuc, Y. Uchida, V. Berardi, M. G. Catanesi, E. Radicioni, N. F. Calabria, L. N. Machado, G. De Rosa, G. Collazuol, F. Iacob, M. Lamoureux, M. Mattiazzi, L. Ludovici, M. Gonin, G. Pronost, Y. Maekawa, Y. Nishimura, C. Fujisawa, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, M. Jakkapu, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, H. Ozaki, T. Shiozawa, A. T. Suzuki, Y. Takeuchi, S. Yamamoto, Y. Kotsar, Y. Ashida, C. Bronner, J. Feng, S. Hirota, T. Kikawa, T. Nakaya, R. A. Wendell, K. Yasutome, N. McCauley, P. Mehta, K. M. Tsui, Y. Fukuda, Y. Itow, H. Menjo, K. Ninomiya, T. Niwa, M. Tsukada, J. Lagoda, S. M. Lakshmi, P. Mijakowski, J. Zalipska, M. Mandal, Y. S. Prabhu, J. Jiang, C. K. Jung, C. Vilela, M. J. Wilking, C. Yanagisawa, M. Jia, K. Hagiwara, M. Harada, T. Horai, H. Ishino, S. Ito, H. Kitagawa, Y. Koshio, W. Ma, F. Nakanishi, N. Piplani, S. Sakai, G. Barr, D. Barrow, L. Cook, S. Samani, D. Wark, F. Nova, T. Boschi, J. Gao, A. Goldsack, T. Katori, F. Di Lodovico, J. Migenda, M. Taani, J. Y. Yang, S. J. Jenkins, M. Malek, J. M. McElwee, O. Stone, M. D. Thiesse, L. F. Thompson, H. Okazawa, S. B. Kim, J. W. Seo, I. Yu, K. Nishijima, M. Koshiba, K. Nakagiri, Y. Nakajima, K. Iwamoto, N. Taniuchi, M. Yokoyama, K. Martens, P. de Perio, M. R. Vagins, M. Kuze, S. Izumiyama, T. Yoshida, M. Inomoto, M. Ishitsuka, H. Ito, T. Kinoshita, R. Matsumoto, K. Ohta, Y. Ommura, N. Shigeta, M. Shinoki, T. Suganuma, K. Yamauchi, J. F. Martin, H. A. Tanaka, T. Towstego, R. Akutsu, V. Gousy-Leblanc, M. Hartz, A. Konaka, N. W. Prouse, S. Chen, B. D. Xu, B. Zhang, M. Posiadala-Zezula, D. Hadley, M. Nicholson, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, J. Walker, Ll. Marti, A. Minamino, G. Pintaudi, R. Sasaki, S. Sano, S. Suzuki, K. Wada, S. Cao, A. ichikawa, K. D. Nakamura, S. Tairafune, K. Choi, Mori, M., Abe, K., Hayato, Y., Hiraide, K., Ieki, K., Ikeda, M., Imaizumi, S., Kameda, J., Kanemura, Y., Kaneshima, R., Kashiwagi, Y., Kataoka, Y., Miki, S., Mine, S., Miura, M., Moriyama, S., Nagao, Y., Nakahata, M., Nakano, Y., Nakayama, S., Noguchi, Y., Okada, T., Okamoto, K., Orii, A., Sato, K., Sekiya, H., Shiba, H., Shimizu, K., Shiozawa, M., Sonoda, Y., Suzuki, Y., Takeda, A., Takemoto, Y., Takenaka, A., Tanaka, H., Tomiya, T., Watanabe, S., Yano, T., Yoshida, S., Han, S., Kajita, T., Okumura, K., Tashiro, T., Wang, X., Xia, J., Megias, G. D., Bravo-Bergu??o, D., Fernandez, P., Labarga, L., Ospina, N., Zaldivar, B., Zsoldos, S., Pointon, B. W., Blaszczyk, F. D. M., Kearns, E., Raaf, J. L., Stone, J. L., Wan, L., Wester, T., Bian, J., Griskevich, N. J., Kropp, W. R., Locke, S., Smy, M. B., Sobel, H. W., Takhistov, V., A., Yankelevich, Hill, J., Kim, J. Y., Lim, I. T., Park, R. G., Bodur, B., Scholberg, K., Walter, C. W., Bernard, L., Coffani, A., Drapier, O., El Hedri, S., Giampaolo, A., Mueller, Th. A., Paganini, P., Quilain, B., Santos, A. D., Ishizuka, T., Nakamura, T., Jang, J. S., Learned, J. G., Anthony, L. H. V., Martin, D., Scott, M., Sztuc, A. A., Uchida, Y., Berardi, V., Catanesi, M. G., Radicioni, E., Calabria, N. F., Nascimento Machado, L., De Rosa, G., Collazuol, G., Iacob, F., Lamoureux, M., Mattiazzi, M., Ludovici, L., Gonin, M., Pronost, G., Maekawa, Y., Nishimura, Y., Fujisawa, C., Friend, M., Hasegawa, T., Ishida, T., Kobayashi, T., Jakkapu, M., Matsubara, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Ozaki, H., Shiozawa, T., Suzuki, A. T., Takeuchi, Y., Yamamoto, S., Kotsar, Y., Ashida, Y., Bronner, C., Feng, J., Hirota, S., Kikawa, T., Nakaya, T., Wendell, R. A., Yasutome, K., Mccauley, N., Mehta, P., Tsui, K. M., Fukuda, Y., Itow, Y., Menjo, H., Ninomiya, K., Niwa, T., Tsukada, M., Lagoda, J., Lakshmi, S. M., Mijakowski, P., Zalipska, J., Mandal, M., Prabhu, Y. S., Jiang, J., Jung, C. K., Vilela, C., Wilking, M. J., Yanagisawa, C., Jia, M., Hagiwara, K., Harada, M., Horai, T., Ishino, H., Ito, S., Kitagawa, H., Koshio, Y., Ma, W., Nakanishi, F., Piplani, N., Sakai, S., Barr, G., Barrow, D., Cook, L., Samani, S., Wark, D., Nova, F., Boschi, T., Gao, J., Goldsack, A., Katori, T., Di Lodovico, F., Migenda, J., Taani, M., Yang, J. Y., Jenkins, S. J., Malek, M., Mcelwee, J. M., Stone, O., Thiesse, M. D., Thompson, L. F., Okazawa, H., Kim, S. B., Seo, J. W., Yu, I., Nishijima, K., Koshiba, M., Nakagiri, K., Nakajima, Y., Iwamoto, K., Taniuchi, N., Yokoyama, M., Martens, K., de Perio, P., Vagins, M. R., Kuze, M., Izumiyama, S., Yoshida, T., Inomoto, M., Ishitsuka, M., Ito, H., Kinoshita, T., Matsumoto, R., Ohta, K., Ommura, Y., Shigeta, N., Shinoki, M., Suganuma, T., Yamauchi, K., Martin, J. F., Tanaka, H. A., Towstego, T., Akutsu, R., Gousy-Leblanc, V., Hartz, M., Konaka, A., Prouse, N. W., Chen, S., Xu, B. D., Zhang, B., Posiadala-Zezula, M., Hadley, D., Nicholson, M., O???flaherty, M., Richards, B., Ali, A., Jamieson, B., Walker, J., Marti, Ll., Minamino, A., Pintaudi, G., Sasaki, R., Sano, S., Suzuki, S., Wada, K., Cao, S., Ichikawa, A., Nakamura, K. D., Tairafune, S., and Choi, K.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, High Energy Physics - Experiment, Supernova neutrinos, High Energy Physics - Experiment (hep-ex), Space and Planetary Science, Core-collapse supernovae Supernova neutrinos Particle astrophysics, Core-collapse supernovae, Particle astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract

Super-Kamiokande has been searching for neutrino bursts characteristic of core-collapse supernovae continuously, in real time, since the start of operations in 1996. The present work focuses on detecting more distant supernovae whose event rate may be too small to trigger in real time, but may be identified using an offline approach. The analysis of data collected from 2008 to 2018 found no evidence of distant supernovae bursts. This establishes an upper limit of 0.29 yr−1 on the rate of core-collapse supernovae out to 100 kpc at 90% C.L. For supernovae that fail to explode and collapse directly to black holes the limit reaches to 300 kpc.

Published
2022

8. Theoretical description of semi-inclusive T2K, MINERνA and MicroBooNE neutrino-nucleus data in the relativistic plane wave impulse approximation

Author

J. A. Caballero, G. D. Megias, J. M. Franco-Patino, and M. B. Barbaro

Subjects
Physics, Muon, Proton, 010308 nuclear & particles physics, Nuclear Theory, Plane wave, Kinematics, Impulse (physics), 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Neutrino, Nuclear Experiment, 010306 general physics, Fermi gas, Fermi Gamma-ray Space Telescope
Abstract

We present the results of semi-inclusive neutrino-nucleus cross sections within the plane wave impulse approximation (PWIA) for three nuclear models: relativistic Fermi gas (RFG), independent-particle shell model (IPSM) and natural orbital shell model (NO) in comparison with the available CC0$\pi$ measurements from the T2K, MINER$\nu$A and MicroBooNE collaborations where a muon and at least one proton are detected in the final state. Results are presented as a function of the momenta and angles of the final particles, as well as in terms of the imbalances between proton and muon kinematics. The analysis reveals that contributions beyond PWIA are crucial to explain the experimental measurements and that the study of correlations between final-state proton and muon kinematics can provide valuable information on relevant nuclear effects such as the Fermi motion and final state interactions.

Published
2021
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12. Search for neutrinos in coincidence with gravitational wave events from the LIGO–Virgo O3a observing run with the Super-Kamiokande detector

Author

Y. Kanemura, A. Giampaolo, W. R. Kropp, Y. Hayato, A. A. Sztuc, P. Mehta, Pablo Fernandez, T. Hasegawa, F. Iacob, D. Bravo-Berguño, Y. Kuno, T. Towstego, O. Drapier, H. Ito, Sei-ichiro Watanabe, G.D. Barr, J. Bian, N. Piplani, S. Miki, S. V. Cao, M. R. Vagins, K. Martens, Y. Takemoto, L. F. Thompson, S. Imaizumi, A. Coffani, O. Stone, J. S. Jang, M. Taani, Seiko Hirota, T. Kikawa, M. Gonin, J. Xia, Masahiro Kuze, A. Goldsack, S. Han, M. J. Wilking, R. A. Wendell, M. B. Smy, Junjie Jiang, F. Nova, E. Radicioni, Kimihiro Okumura, B. Zaldivar, J. Y. Kim, S. Izumiyama, A. Orii, S. Mine, L. Cook, J. Migenda, John Hill, A. T. Suzuki, K. Okamoto, T. Horai, R. Sasaki, J. F. Martin, J. Kameda, B. Bodur, Yuichi Oyama, T. Nakadaira, J. McElwee, J. L. Stone, I. T. Lim, F. Di Lodovico, D. L. Wark, Vincenzo Berardi, Y. Maekawa, S. El Hedri, T. Sekiguchi, L. Ludovici, Th. A. Mueller, N. Ospina, K. Ohta, G. De Rosa, Hiromasa Tanaka, V. Takhistov, Hiroaki Menjo, C. Simpson, J. G. Learned, K. M. Tsui, P. Mijakowski, J. Y. Yang, K. Abe, J. L. Raaf, M. Tsukada, M. Thiesse, K. Iwamoto, H. K. Tanaka, Yasunari Suzuki, S. Samani, G. D. Megias, A. Konaka, M. G. Catanesi, N. J. Griskevich, Y. Nishimura, David Hadley, F. d. M. Blaszczyk, M. Inomoto, S. Locke, Masaki Ishitsuka, M. Jakkapu, Yusuke Koshio, S. Sakai, D. Barrow, M. Lamoureux, P. Weatherly, P. de Perio, T. Boschi, T. Niwa, K. Nakamura, T. Yoshida, A. Pritchard, C. K. Jung, R. Matsumoto, M. Hartz, T. Shiozawa, C. Vilela, Ahmed Ali, M. Koshiba, Masato Shiozawa, H. Ozaki, T. Tashiro, S. Moriyama, S. Nakayama, R. Akutsu, L. H. V. Anthony, Hussain Kitagawa, S. J. Jenkins, B. Jamieson, R. G. Park, Song Chen, P. Paganini, M. Miura, Masayuki Nakahata, H. W. Sobel, Yuuki Nakano, Y. Uchida, B. D. Xu, Ll. Marti, Kate Scholberg, K. Hagiwara, Yutaka Nakajima, B. W. Pointon, D. Martin, Manabu Tanaka, K. Sato, G. Pintaudi, H. Okazawa, M. Ikeda, L. Wan, S. Molina Sedgwick, Hirokazu Ishino, Y. Kotsar, N. F. Calabria, Yuto Ashida, C. Yanagisawa, E. Kearns, C. Bronner, Masashi Yokoyama, Intae Yu, K. Yasutome, T. Nakamura, G. Collazuol, J. Walker, L. N. Machado, N. Ogawa, K. Nishijima, T. Wester, L. Bernard, T. Ishizuka, M. Harada, Tsuyoshi Nakaya, Y. Nagao, Atsushi Takeda, A. Minamino, Rongkun Wang, S. B. Kim, M. Shinoki, A. K. Ichikawa, N. McCauley, L. Labarga, T. Kobayashi, M. Malek, N. W. Prouse, B. Richards, T. Matsubara, S. Yamamoto, C. W. Walter, K. Sakashita, J. Feng, M. Posiadala-Zezula, W. Ma, B. Quilain, Hiroyuki Sekiya, Y. Kataoka, Y. Fukuda, Y. Takeuchi, T. Kajita, Takatomi Yano, M. Friend, M. Mori, Y. Sonoda, S. Sano, Yoshitaka Itow, G. Pronost, Shintaro Ito, S. Zsoldos, T. Tsukamoto, T. Okada, T. Ishida, A. Takenaka, UAM. Departamento de Física Teórica, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Super-Kamiokande, Abe, K., Bronner, C., Hayato, Y., Ikeda, M., Imaizumi, S., Kameda, J., Kanemura, Y., Kataoka, Y., Miki, S., Miura, M., Moriyama, S., Nagao, Y., Nakahata, M., Nakayama, S., Okada, T., Okamoto, K., Orii, A., Pronost, G., Sekiya, H., Shiozawa, M., Sonoda, Y., Suzuki, Y., Takeda, A., Takemoto, Y., Takenaka, A., Tanaka, H., Watanabe, S., Yano, T., Han, S., Kajita, T., Okumura, K., Tashiro, T., Wang, R., Xia, J., Megias, G. D., Bravo-Berguno, D., Labarga, L., Marti, Ll., Zaldivar, B., Pointon, B. W., Blaszczyk, F. D. M., Kearns, E., Raaf, J. L., Stone, J. L., Wan, L., Wester, T., Bian, J., Griskevich, N. J., Kropp, W. R., Locke, S., Mine, S., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Hill, J., Kim, J. Y., Lim, I. T., Park, R. G., Bodur, B., Scholberg, K., Walter, C. W., Bernard, L., Coffani, A., Drapier, O., El Hedri, S., Giampaolo, A., Gonin, M., Mueller, Th. A., Paganini, P., Quilain, B., Ishizuka, T., Nakamura, T., Jang, J. S., Learned, J. G., Anthony, L. H. V., Martin, D. G. R., Sztuc, A. A., Uchida, Y., Berardi, V., Catanesi, M. G., Radicioni, E., Calabria, N. F., Nascimento Machado, L., de Rosa, G., Collazuol, G., Iacob, F., Lamoureux, M., Ospina, N., Ludovici, L., Maekawa, Y., Nishimura, Y., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Jakkapu, M., Kobayashi, T., Matsubara, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Kotsar, Y., Nakano, Y., Ozaki, H., Shiozawa, T., Suzuki, A. T., Takeuchi, Y., Yamamoto, S., Ali, A., Ashida, Y., Feng, J., Hirota, S., Kikawa, T., Mori, M., Nakaya, T., Wendell, R. A., Yasutome, K., Fernandez, P., Mccauley, N., Mehta, P., Pritchard, A., Tsui, K. M., Fukuda, Y., Itow, Y., Menjo, H., Niwa, T., Sato, K., Tsukada, M., Mijakowski, P., Jiang, J., Jung, C. K., Vilela, C., Wilking, M. J., Yanagisawa, C., Hagiwara, K., Harada, M., Horai, T., Ishino, H., Ito, S., Koshio, Y., Kitagawa, H., Ma, W., Piplani, N., Sakai, S., Kuno, Y., Barr, G., Barrow, D., Cook, L., Goldsack, A., Samani, S., Simpson, C., Wark, D., Nova, F., Boschi, T., Di Lodovico, F., Migenda, J., Molina Sedgwick, S., Taani, M., Zsoldos, S., Yang, J. Y., Jenkins, S. J., Malek, M., Mcelwee, J. M., Stone, O., Thiesse, M. D., Thompson, L. F., Okazawa, H., Kim, S. B., Yu, I., Nishijima, K., Koshiba, M., Iwamoto, K., Nakajima, Y., Ogawa, N., Yokoyama, M., Martens, K., Vagins, M. R., Izumiyama, S., Kuze, M., Tanaka, M., Yoshida, T., Inomoto, M., Ishitsuka, M., Ito, H., Matsumoto, R., Ohta, K., Shinoki, M., Martin, J. F., Tanaka, H. A., Towstego, T., Akutsu, R., Hartz, M., Konaka, A., de Perio, P., Prouse, N. W., Chen, S., Xu, B. D., Posiadala-Zezula, M., Hadley, D., Richards, B., Jamieson, B., Walker, J., Minamino, A., Pintaudi, G., Sano, S., Sasaki, R., and Ichikawa, A. K.

Subjects
Astrophysics, KAMIOKANDE, Neutrino Astronomy, GeV, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Neutrino astronomy Gravitational wave astronomy High energy astrophysics Black holes Compact objects Neutron stars Transient sources, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], LIGO, 010303 astronomy & astrophysics, QC, QB, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), energy: emission, Black holes, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, High energy astrophysics, High-energy astronomy, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Gravitational-wave astronomy, Neutron stars, neutrino: spectrum, 0103 physical sciences, Instrumentation and Methods for Astrophysics (astro-ph.IM), Compact objects, flavor, 010308 nuclear & particles physics, Gravitational wave, background, gravitational radiation, Física, Astronomy and Astrophysics, trigger, Transient sources, flux, Neutron star, VIRGO, Space and Planetary Science, High Energy Physics::Experiment, Gravitational wave astronomy, Neutrino astronomy, Super-Kamiokande, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], statistical
Abstract

The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy ($7-100$ MeV) and high-energy ($0.1-10^5$ GeV) samples were analyzed in order to cover a very wide neutrino spectrum. Follow-ups of 36 (out of 39) gravitational waves reported in the GWTC-2 catalog were examined; no significant excess above the background was observed, with 10 (24) observed neutrinos compared with 4.8 (25.0) expected events in the high-energy (low-energy) samples. A statistical approach was used to compute the significance of potential coincidences. For each observation, p-values were estimated using neutrino direction and LVC sky map ; the most significant event (GW190602_175927) is associated with a post-trial p-value of $7.8\%$ ($1.4\sigma$). Additionally, flux limits were computed independently for each sample and by combining the samples. The energy emitted as neutrinos by the identified gravitational wave sources was constrained, both for given flavors and for all-flavors assuming equipartition between the different flavors, independently for each trigger and by combining sources of the same nature., Comment: 16 pages, 5 figures. v2: adding corrections from The Astrophysical Journal review

Published
2021
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13. Diffuse Supernova Neutrino Background search at Super-Kamiokande with neutron tagging

Author

K. Sakashita, A. T. Suzuki, K. Okamoto, M. Posiadala-Zezula, T. Nakadaira, Takuto Suganuma, David Wark, Y. Kataoka, Y. Takeuchi, S. Sakai, Y. Nishimura, Shintaro Ito, Atsushi Takeda, G.D. Barr, B. Quilain, E. Kearns, T. Yano, Tatsuya Kikawa, L. Marti, Yasuhiro Nakajima, Masashi Yokoyama, Tatsushi Kinoshita, Joanna Zalipska, Y. Nagao, A. Minamino, Henry W. Sobel, Marco Mattiazzi, J. McElwee, J. Y. Kim, M. Shinoki, Kenzo Nakamura, M. Friend, N. W. Prouse, Yoshihiro Suzuki, H. A. Tanaka, C. W. Walter, A. Coffani, T. Ishizuka, N. McCauley, Tsuyoshi Nakaya, O. Stone, M. Malek, S. Miki, Takashi Kobayashi, David Hadley, T. Hasegawa, C. K. Jung, S. Yamamoto, Makoto Miura, Yuichi Oyama, O. Drapier, M. Ikeda, Masato Shiozawa, L. Ludovici, A. Takenaka, Hiroyuki Sekiya, S. Izumiyama, T. Matsubara, N. Piplani, Soo-Bong Kim, J. Y. Yang, Y. Fukuda, L. Wan, A. Ali, J. Feng, T. Tsukamoto, S. Locke, S. Mohan Lakshmi, A. Konaka, Hiroaki Menjo, M. Koshiba, Masahiro Kuze, F. Nova, M. Hartz, Takaaki Kajita, R. G. Park, Yuuki Nakano, Yusuke Koshio, R. Sasaki, D. Barrow, Thomas A. Mueller, T. Ishida, B. W. Pointon, Natalv Ospina, Kate Scholberg, K. Yasutome, John Fraser Martin, James Hill, T. Tashiro, Hirokazu Ishino, S. J. Jenkins, E. Radicioni, Marcus O'Flaherty, T. Nakamura, R. Matsumoto, G. Collazuol, Intae Yu, Mark Scott, N. Ogawa, J. L. Raaf, C. Yanagisawa, Yoshinari Hayato, L. Bernard, K. Martens, M. Jakkapu, S. Mine, K. M. Tsui, A. Goldsack, S. Nakayama, M. Taani, T. Boschi, R. A. Wendell, M. Mori, M. Lamoureux, Y. Sonoda, Hiroshi Ito, S. Sano, K. Nishijima, Yoshitaka Itow, T. Wester, S. Han, G. Pronost, H. Okazawa, M. J. Wilking, D. Martin, K. Sato, A. K. Ichikawa, J. Kameda, F. Iacob, P. Mijakowski, K. Abe, Shuhei Watanabe, B. Bodur, Y. Kanemura, A. Giampaolo, Pablo Fernandez, P. Mehta, T. Towstego, S. Zsoldos, Vincenzo Berardi, S. Cao, William R. Kropp, T. Sekiguchi, S. Chen, G. D. Megias, J. Bian, M. Gonin, J. Xia, Sonia El Hedri, M. Thiesse, K. Iwamoto, C. Bronner, Gianfranca De Rosa, J. S. Jang, H. Ozaki, Hussain Kitagawa, B. Jamieson, Patrick de Perio, Katsuki Hiraide, K. Nakamura, Y. Maekawa, Jeff N. Griskevich, S. Moriyama, G. Pintaudi, Masayuki Nakahata, Y. Uchida, N. F. Calabria, J. G. Learned, H. K. Tanaka, P. Paganini, B. D. Xu, S. Samani, M. G. Catanesi, Lester D.R. Thompson, M. R. Vagins, Y. Kotsar, John Walker, L. Cook, I. T. Lim, L. H. V. Anthony, R. Akutsu, C. Vilela, FD Lodovico, Junjie Jiang, V. Takhistov, Justyna Lagoda, Jingyuan Gao, W. Ma, L. Labarga, B. Richards, Kimihiro Okumura, Yasuhiro Takemoto, Masaki Ishitsuka, M. Inomoto, A. A. Sztuc, M. B. Smy, B. Zaldivar, J. Migenda, L. N. Machado, and M. Harada

Subjects
Physics, Supernova, Neutron, Astrophysics, Neutrino, Super-Kamiokande
Published
2021
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14. Low energy radioactivity BG model in Super-Kamiokande detector from SK-IV data

Author

S. J. Jenkins, K. Nakamura, M. R. Vagins, M. Taani, J. L. Raaf, John Walker, H. Okazawa, Masaki Ishitsuka, S. Moriyama, A. A. Sztuc, P. Mehta, S. Miki, Masayuki Nakahata, Y. Uchida, I. T. Lim, L. H. V. Anthony, Junjie Jiang, V. Takhistov, Yoshinari Hayato, T. Towstego, M. Jakkapu, J. Y. Kim, Y. Maekawa, Patrick de Perio, Atsushi Takeda, T. Boschi, Yasuhiro Nakajima, J. G. Learned, Shuhei Watanabe, A. K. Ichikawa, T. Yano, Hiroshi Ito, A. T. Suzuki, K. Okamoto, Vincenzo Berardi, J. Kameda, S. Izumiyama, Joanna Zalipska, H. K. Tanaka, L. Cook, A. Coffani, S. Samani, M. G. Catanesi, O. Drapier, M. B. Smy, B. Zaldivar, Y. Takeuchi, J. Migenda, O. Stone, B. Bodur, T. Nakadaira, Takashi Kobayashi, P. Mijakowski, S. Zsoldos, Sonia El Hedri, T. Hasegawa, A. Ali, Katsuki Hiraide, Makoto Miura, K. Nishijima, M. Thiesse, K. Iwamoto, Justyna Lagoda, T. Wester, F. Iacob, Jingyuan Gao, Y. Nagao, A. Minamino, S. Mohan Lakshmi, Lester D.R. Thompson, M. Hartz, L. N. Machado, Kenzo Nakamura, K. Sakashita, W. Ma, T. Matsubara, William R. Kropp, T. Sekiguchi, S. Chen, M. Shinoki, M. Harada, N. McCauley, S. Sakai, M. Posiadala-Zezula, R. Akutsu, Marco Mattiazzi, J. Feng, M. Friend, Yuuki Nakano, K. Abe, Shintaro Ito, M. Malek, N. Piplani, B. W. Pointon, S. Yamamoto, Y. Kanemura, A. Giampaolo, Kate Scholberg, Hiroaki Menjo, N. W. Prouse, C. W. Walter, E. Kearns, David Wark, P. Paganini, Kimihiro Okumura, Takaaki Kajita, C. Vilela, T. Tashiro, FD Lodovico, M. Koshiba, B. D. Xu, Masashi Yokoyama, G.D. Barr, Yasuhiro Takemoto, T. Nakamura, S. Locke, Y. Kataoka, James Hill, M. Inomoto, Intae Yu, R. G. Park, Tatsuya Kikawa, G. D. Megias, Pablo Fernandez, R. Matsumoto, L. Marti, N. Ogawa, G. Pintaudi, David Hadley, Hiroyuki Sekiya, J. S. Jang, Hirokazu Ishino, N. Jeff Griskevich, L. Labarga, Soo-Bong Kim, S. Han, L. Bernard, T. Ishizuka, C. Yanagisawa, Tsuyoshi Nakaya, Y. Fukuda, L. Wan, B. Richards, T. Tsukamoto, K. Yasutome, Marcus O'Flaherty, C. K. Jung, Yuichi Oyama, M. Ikeda, A. Goldsack, N. F. Calabria, S. Nakayama, G. Collazuol, Mark Scott, Masato Shiozawa, R. A. Wendell, L. Ludovici, J. Y. Yang, T. Ishida, K. Martens, S. Mine, K. M. Tsui, Y. Kotsar, Y. Nishimura, Masahiro Kuze, F. Nova, R. Sasaki, A. Konaka, M. Lamoureux, Yusuke Koshio, D. Martin, J. Bian, H. Ozaki, Hussain Kitagawa, B. Jamieson, Natalv Ospina, S. Cao, D. Barrow, John Fraser Martin, A. Takenaka, K. Sato, C. Bronner, M. Gonin, J. Xia, Gianfranca De Rosa, Tatsushi Kinoshita, Yoshihiro Suzuki, Henry W. Sobel, J. McElwee, H. A. Tanaka, E. Radicioni, B. Quilain, M. Mori, Y. Sonoda, S. Sano, Yoshitaka Itow, Takuto Suganuma, G. Pronost, M. J. Wilking, Thomas A. Mueller, Pronost, Guillaume, Abe, Ko, Bronner, Christophe, Hayato, Yoshinari, Hiraide, Katsuki, Ikeda, Motoyasu, Kameda, Jun, Kanemura, Yuki, Kataoka, Yousuku, Miki, Shintaro, Miura, Makoto, Moriyama, Shigetaka, Nagao, Yoshiki, Nakahata, Masayuki, Nakayama, Shoei, Okamoto, Kohei, Sekiya, Hiroyuki, Shiozawa, Masato, Sonoda, Yutaro, Suzuki, Yoichiro, Takeda, Atsushi, Takemoto, Yasuhiro, Takenaka, Akira, Tanaka, Hidekazu, Watanabe, Shuhei, Yano, Takatomi, Han, Seungho, Kajita, Takaaki, Okumura, Kimihiro, Tashiro, Takuya, Xia, Junjie, Megias, Guillermo, Labarga, Lui, Marti, Llui, Zaldivar, Bryan, Pointon, Barry W., Kearns, Edward, Raaf, Jennifer L., Wan, Linyan, Wester, Thoma, Bian, Jianming, Griskevich, N. Jeff, Kropp, William R., Locke, Scott, Mine, Shunichi, Smy, Michael, Sobel, Henry W., Takhistov, Volodymyr, Hill, Jame, Kim, Jae Yool, Lim, In Taek, Park, Ryeong Gyoon, Bodur, Baran, Scholberg, Kate, Walter, Chri, Bernard, Laura, Coffani, Alice, Drapier, Olivier, El Hedri, Sonia, Giampaolo, Alberto, Gonin, Michel, Mueller, Thomas A., Paganini, Pascal, Quilain, Benjamin, Ishizuka, Takeharu, Nakamura, Taku, Jang, Jae Seung, Learned, John G., Cao, Son, Anthony, Lauren H. V., Martin, Daniel, Scott, Mark, Sztuc, Artur A., Uchida, Yoshi, Berardi, Vincenzo, Catanesi, Maria Gabriella, Radicioni, Emilio, Calabria, Nicola F., Machado, Lucas N., De Rosa, Gianfranca, Collazuol, Gianmaria, Iacob, Fabio, Lamoureux, Mathieu, Mattiazzi, Marco, Ospina, Natalv, Ludovici, Lucio, Maekawa, Yuto, Nishimura, Yasuhiro, Friend, Megan, Hasegawa, Takuya, Ishida, Taku, Kobayashi, Takashi, Jakkapu, Mahesh, Matsubara, Tsunayuki, Nakadaira, Takeshi, Nakamura, Kenzo, Oyama, Yuichi, Sakashita, Ken, Sekiguchi, Tetsuro, Tsukamoto, Toshifumi, Boschi, Tommaso, Di Lodovico, Francesca, Gao, Jingyuan, Migenda, Jost, Taani, Mahdi, Zsoldos, Stephane, Nakano, Yuuki, Ozaki, Hironori, Suzuki, Atsumu, Takeuchi, Yasuo, Yamamoto, Shotaro, Kotsar, Yurii, Ali, Ajmi, Feng, Jiahui, Kikawa, Tatsuya, Mori, Masamitsu, Nakaya, Tsuyoshi, Wendell, Roger, Yasutome, Kenji, Fernández, Pablo, Mccauley, Neil, Mehta, Pruthvi, Tsui, Ka Ming, Fukuda, Yoshiyuki, Itow, Yoshitaka, Menjo, Hiroaki, Sato, Kazufumi, Lagoda, Justyna, Lakshmi, S. Mohan, Mijakowski, Piotr, Zalipska, Joanna, Jiang, Junjie, Jung, Chang K., Vilela, Cristovao, Wilking, Michael, Yanagisawa, Chiaki, Harada, Masayuki, Ishino, Hirokazu, Ito, Shintaro, Kitagawa, Hussain, Koshio, Yusuke, Ma, Wenjie, Piplani, Nishtha, Sakai, Seiya, Barr, Gile, Barrow, Danial, Cook, Laurence, Goldsack, Alexander, Samani, Soniya, Wark, David, Nova, Federico, Yang, Jeong Yeol, Jenkins, Sam J., Malek, Matthew, Mcelwee, Jordan, Stone, Owen, Thiesse, Matthew D., Thompson, Lee F., Okazawa, Hiroko, Kim, Soo Bong, Yu, Intae, Ichikawa, Atsuko, Nakamura, Kiseki, Nishijima, Kyoshi, Koshiba, Masatoshi, Iwamoto, Konosuke, Nakajima, Yasuhiro, Ogawa, Natsumi, Yokoyama, Masashi, Martens, Kai, Vagins, Mark, Kuze, Masahiro, Izumiyama, Shota, Inomoto, Michitaka, Ishitsuka, Masaki, Ito, Hiroshi, Kinoshita, Tatsushi, Matsumoto, Ryo, Shinoki, Masataka, Suganuma, Takuto, Martin, John Fraser, Tanaka, Hirohisa, Towstego, Trevor, Akutsu, Ryosuke, de Perio, Patrick, Hartz, Mark, Konaka, Akira, Prouse, Nick, Chen, Shaomin, Xu, Benda D., Posiadala-Zezula, Magdalena, Hadley, David, O'Flaherty, Marcu, Richards, Benjamin, Jamieson, Blair, Walker, John, Minamino, Akihiro, Pintaudi, Ggiorgio, Sano, Shiochi, and Sasaki, Ryota

Subjects
Physics, Physics::Instrumentation and Detectors, Solar neutrino, Physics::Medical Physics, Detector, Water source, chemistry.chemical_element, Radon, Nuclear physics, Low energy, chemistry, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Solar data
Abstract

The radioactivity background are among the most dangerous background for low energy neutrino analysis in Super-Kamiokande (SK), like the solar neutrino analysis. Among them, the main contribution is coming from $^{222}$Rn, which is spread in the detector's water due to the water source and to the photo multiplier (PMT) emanations. Up to now, its exact distribution in the detector was not known. Using our knowledge of the radon concentration in the detector water, and the SK-IV solar data, we developed a model of the radon distribution in the detector. The uncertainty on the Rn concentration associated with this model was estimated to be $\sim0.1$ mBq/m$^{3}$

Published
2021
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15. First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single- π+ production channel containing at least one proton

Author

T. Arihara, Y. Hayato, J. R. Wilson, L. Ludovici, S. V. Cao, M. Gonin, T. Honjo, S. Moriyama, S. Roth, D. G. Payne, A. Nakamura, W. C. Parker, L. Molina Bueno, R. Zaki, C. E. R. Naseby, G. D. Megias, S. K. Lin, C. Alt, J. Parlone, M. Tzanov, J. Kisiel, K. Matsushita, M. Zito, Hidekazu Kakuno, G. Yang, N. Izumi, A. K. Ichikawa, K. Niewczas, Patrick Dunne, J. Kameda, A. Eguchi, C. Touramanis, Antonio Ereditato, N. Yershov, C. Giganti, S. Kuribayashi, R. Okada, B. Jamieson, A. Zalewska, C. Jesús-Valls, Kevin Scott McFarland, D. Cherdack, S. Valder, K. Abe, S. Suvorov, R. P. Litchfield, P. Hamacher-Baumann, K. Yasutome, A. Shvartsman, N. Teshima, D. Bravo Berguño, G. Pintaudi, Y. Fujii, C. Mauger, S. Manly, Federico Sanchez, C. McGrew, L. Koch, C. Andreopoulos, Masato Shiozawa, S. R. Dennis, C. M. Schloesser, Xianguo Lu, M. J. Wilking, Gareth J. Barker, A. Beloshapkin, A. Takeda, B. A. Popov, D. Vargas, M. Grassi, T. A. Doyle, E. Radicioni, Vincenzo Berardi, D. Barrow, Etam Noah, F. J. P. Soler, Alexander Finch, J. Chakrani, A. Hiramoto, T. Hasegawa, A. Gorin, J. Dumarchez, K. Fusshoeller, R.P. Kurjata, S. P. Kasetti, T. Ogawa, L. Munteanu, M. Tajima, Yusuke Koshio, A. T. Suzuki, Y. Nagai, C. K. Jung, Alan Cosimo Ruggeri, A. Kostin, André Rubbia, T. Matsubara, T. Vladisavljevic, L. Magaletti, S. Bhadra, L. Cook, F. Iacob, L. Berns, Yuuki Nakano, R. Fukuda, D. L. Wark, Y. Tanihara, G. C. Penn, G. Vasseur, Y. Kataoka, Th. A. Mueller, Thorsten Lux, A. Maurel, F. Di Lodovico, M. Hartz, A. Bubak, C. Pistillo, Kate Scholberg, T. Sekiguchi, Y. Asada, M. Tada, M. Jakkapu, Shigeki Aoki, M. M. Khabibullin, E. A.G. Goodman, E. T. Atkin, R. Akutsu, T. Okusawa, K. Iwamoto, W. Shorrock, Jaroslaw Pasternak, G. Fiorillo, T. Kikawa, C. Vilela, J. Xia, S. Parsa, M. Ishitsuka, Yu. G. Kudenko, N. C. Hastings, H. K. Tanaka, D. A. Harris, K. Nishizaki, Marco Laveder, C. Yanagisawa, Y. Takeuchi, J. P. Coleman, P. B. Jurj, L. Wan, V. Paolone, Oleg Mineev, A. Dergacheva, Y. Nishimura, T. Yano, H. Nakamura, W. G. S. Vinning, C. Riccio, T. Dealtry, T. Nakadaira, S. Dolan, K. Wood, L. Pickering, E. Mazzucato, Y. Oyama, T. Kobayashi, M. Ziembicki, H. Kikutani, Y. Nakajima, C. Densham, A. Cudd, C. C. Delogu, J. C. Nugent, S. King, G. Zarnecki, A. D. Marino, G. De Rosa, J. G. Walsh, J. Lagoda, Yoshihiro Suzuki, M. Buizza Avanzini, R. A. Owen, N. Thamm, T. Maruyama, Samira Hassani, T. V. Ngoc, A. Cervera, K. Yamamoto, M. Hogan, L. Maret, G.D. Barr, K. Nakamura, Yufeng Wang, D. R. Hadley, A. C. Weber, J. A. Nowak, F. Bench, T. Ishida, T. Odagawa, A. Bravar, Ahmed Ali, A. Shaikhiev, P. N. Ratoff, T. Kutter, A. A. Sztuc, M. Batkiewicz-Kwasniak, T. Wachala, K. Zaremba, M. Tani, L. S.M. Lakshmi, L. Mellet, N. Akhlaq, M. Lawe, Jan T. Sobczyk, Lars Eklund, C. Bronner, T. Bonus, T. Kobata, Teppei Katori, M. B. Smy, L. N. Machado, R. Wendell, A. Rychter, M. Posiadala-Zezula, M. Kabirnezhad, C. Wret, K. Mavrokoridis, G. Collazuol, S. B. Boyd, T. Towstego, C. Francois, E. Rondio, P. Jonsson, B. Quilain, N. McCauley, A. Konaka, D. Munford, L. Labarga, J. McElwee, K. Skwarczynski, A. Minamino, Mark Scott, Stephanie Bron, L. O'Sullivan, T. Yoshida, K. Porwit, C. Wilkinson, C. Ruggles, G. Santucci, Y. Awataguchi, Hiroyuki Sekiya, F. Nova, S. L. Liu, A. Blondel, M. Malek, J. Holeczek, Kendall Mahn, A. Izmaylov, T. Radermacher, M. Cicerchia, Lester D.R. Thompson, M. Mezzetto, K. Kowalik, M. Yu, Masashi Yokoyama, M. Vagins, N. T. Hong Van, A. N. Khotjantsev, J. Zalipska, S. Mine, J. Walker, M. Guigue, M. Miura, K. M. Tsui, S. L. Cartwright, Tsuyoshi Nakaya, M. G. Catanesi, D. Coplowe, Roberto Spina, L. Marti-Magro, H. Sobel, T. S. Nonnenmacher, J. J. Jiang, A. Blanchet, M. Lamoureux, S. Zsoldos, V. Palladino, S. Nakayama, Y. Seiya, A. Longhin, M. Friend, A. Shaykina, Michelangelo Pari, Y. H. Xu, M. Pavin, S. J. Jenkins, T. Tsukamoto, Y. Ashida, Y. Fukuda, G. Christodoulou, K. Sakashita, M. Kuze, Masayuki Nakahata, C. Pidcott, Y. Uchida, Y. Yoshimoto, D. Sgalaberna, M. Reh, L. L. Kormos, B. Radics, B. Bourguille, A. Mefodiev, M. Ikeda, K. Nakayoshi, Kimihiro Okumura, S. Bolognesi, Sy Suzuki, M. Antonova, Y. Katayama, S. Emery-Schrenk, D. Douqa, W. Toki, H. M. O'Keeffe, Y. Sonoda, V. Q. Nguyen, M. O. Wascko, E. Kearns, and D. Pershey

Subjects
Physics, Proton, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Monte Carlo method, T2K experiment, 01 natural sciences, 7. Clean energy, Nuclear physics, Transverse plane, 0103 physical sciences, Muon neutrino, Neutrino, 010306 general physics, Event (particle physics), Charged current
Abstract

This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-$\pi^+$ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single $\pi^+$ and at least one proton in the final state, at the ND280 off-axis near detector of the T2K experiment. The extracted cross sections are compared to the predictions from different neutrino-nucleus interaction event generators. Overall, the results show a preference for models which have a more realistic treatment of nuclear medium effects including the initial nuclear state and final-state interactions.

Published
2021
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17. Search for tens of MeV neutrinos associated with gamma-ray bursts in Super-Kamiokande

Author

P. Fernandez, Y. Nishimura, M. Inomoto, J. Bian, P. de Perio, G. Pronost, L. Wan, M. Lamoureux, Shintaro Ito, S. Zsoldos, Y. Takeuchi, K. Martens, J. Xia, Y. Sonoda, O. Drapier, Takatomi Yano, S. El Hedri, T. Shiozawa, Ahmed Ali, Ll. Marti, K. Nakamura, C. Xu, Hiroaki Menjo, C. Bronner, A. Konaka, T. Sekiguchi, K. S. Ganezer, M. Hartz, A. Giampaolo, B. Jamieson, N. F. Calabria, J. G. Learned, Takaaki Kajita, K. Yasutome, S. Nakayama, A. Takenaka, M. Harada, Vincenzo Berardi, William R. Kropp, S. Chen, R. G. Park, L. Ludovici, Kimihiro Okumura, Yasuhiro Takemoto, K. M. Tsui, A. Takeda, Hiromasa Tanaka, C. W. Walter, H. Okazawa, K. Okamoto, Y. Ashida, J. McElwee, S. Izumiyama, D. Barrow, Y. Fukuda, M. Ikeda, R. P. Litchfield, T. Okada, Intae Yu, N. Ogawa, Kate Scholberg, H. Miyabe, G. D. Megias, C. Simpson, Makoto Sakuda, L. Bernard, S. Samani, M. G. Catanesi, J. Y. Yang, Masaki Ishitsuka, M. Thiesse, F. d. M. Blaszczyk, Jl Stone, Yoshitaka Kuno, G. Pintaudi, K. Ohta, Hiroyuki Sekiya, F. Nova, Y. Kato, P. Weatherly, K. Abe, S. Han, T. Sugimoto, Hirokazu Ishino, Masayuki Nakahata, N. McCauley, C. M. Nantais, B. Zaldivar, T. Nakadaira, S. Sakai, E. Kearns, A. Goldsack, Michael B. Smy, M. Jakkapu, R. A. Wendell, Y. Uchida, M. Posiadala-Zezula, Y. Oyama, B. Bodur, C. Vilela, G. De Rosa, K. Sato, G. Collazuol, Luis Labarga, J. Kameda, J. Feng, D. Fukuda, T. Niwa, P. Mijakowski, P. Paganini, B. D. Xu, N. J. Griskevich, P. Mehta, T. Horai, C. K. Jung, Lester D.R. Thompson, Yusuke Koshio, D. Bravo-Berguño, S. Matsuno, T. Tsukamoto, K. Hagiwara, S. Hirota, M. Koshiba, Y. Nakajima, G.D. Barr, Yuuki Nakano, T. Mochizuki, Stephen J. Jenkins, I. T. Lim, T. Ishida, Y. Isobe, L. N. Machado, T. Boschi, John Walker, Th. A. Mueller, Hiroshi Ito, B. W. Pointon, M. Taani, R. Akutsu, A. A. Sztuc, Makoto Hasegawa, L. H. V. Anthony, Tatsuya Kikawa, Volodymyr Takhistov, Yousuke Kataoka, N. W. Prouse, S. V. Cao, A. Pritchard, M. Tsukada, M. Gonin, Yoshihiro Suzuki, Y. Nagao, A. Minamino, M. Shinoki, M. Malek, J. Y. Kim, J. L. Raaf, S. Yamamoto, T. Nakamura, S. Locke, M. Jiang, A. Coffani, Yasuhiro Kishimoto, O. Stone, Takashi Kobayashi, T. Towstego, T. Hasegawa, S. Mine, Takahiko Matsubara, K. Frankiewicz, N. Piplani, A. Orii, Mark R. Vagins, S. B. Kim, A. K. Ichikawa, K. E. Nakamura, S. Molina Sedgwick, B. Richards, Ken Sakashita, W. Ma, R. Matsumoto, B. Quilain, J. F. Martin, M. Friend, Masato Shiozawa, Y. Choi, L. Cook, A. Suzuki, Masashi Yokoyama, T. Ishizuka, Tsuyoshi Nakaya, J. S. Jang, Masahiro Kuze, R. Sasaki, Henry W. Sobel, Kyoshi Nishijima, Natalv Ospina, Shigetaka Moriyama, H. A. Tanaka, S. Imaizumi, K. Iwamoto, T. Tashiro, Manabu Tanaka, Yoshinari Hayato, C. Yanagisawa, T. Wester, Yoshitaka Itow, M. Miura, M. J. Wilking, Takashi Yoshida, F. Iacob, E. Radicioni, John Hill, D. L. Wark, Y. Takahira, R. Wang, M. Mori, F. Di Lodovico, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Super-Kamiokande, and Super-Kamiokande Collaboration

Subjects
Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, FOS: Physical sciences, Astrophysics, KAMIOKANDE, gamma ray: burst, 01 natural sciences, Fluence, Coincidence, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Positron, F03 Ultra-high energy phenomena of cosmic rays, neutrino: energy, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010303 astronomy & astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, background, High Energy Physics::Phenomenology, F22 Neutrinos from supernova remnant and other astronomical objects, network, positron, High Energy Physics::Experiment, C43 Underground experiments, Underground experiments Ultra-high energy phenomena of cosmic rays Neutrinos from supernova remnant and other astronomical objects, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Super-Kamiokande, Gamma-ray burst, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Energy (signal processing), Bar (unit)
Abstract

A search for neutrinos produced in coincidence with Gamma-Ray Bursts(GRB) was conducted with the Super-Kamiokande (SK) detector. Between December 2008 and March 2017, the Gamma-ray Coordinates Network recorded 2208 GRBs that occurred during normal SK operation. Several time windows around each GRB were used to search for coincident neutrino events. No statistically significant signal in excess of the estimated backgrounds was detected. The $\bar\nu_e$ fluence in the range from 8 MeV to 100 MeV in positron total energy for $\bar\nu_e+p\rightarrow e^{+}+n$ was found to be less than $\rm 5.07\times10^5$ cm$^{-2}$ per GRB in 90\% C.L. Upper bounds on the fluence as a function of neutrino energy were also obtained., Comment: 29 pages, 16 figures, 5 tables, accepted by PTEP

Published
2021
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18. Follow-up of GWTC-2 gravitational wave events with neutrinos from the Super-Kamiokande detector

Author

Vincenzo Berardi, A. A. Sztuc, M. Thiesse, K. Iwamoto, P. Mehta, M. Koshiba, S. J. Jenkins, M. Taani, R. G. Park, H. Okazawa, Y. Takeuchi, Patrick de Perio, Kimihiro Okumura, K. Martens, S. Han, S. Cao, Thomas A. Mueller, E. Kearns, M. R. Vagins, David Hadley, Henry W. Sobel, Yoshinari Hayato, K. Yasutome, S. Mine, K. M. Tsui, Masashi Yokoyama, T. Towstego, C. Bronner, J. Y. Yang, Yasuhiro Takemoto, O. Drapier, J. McElwee, Gianfranca De Rosa, Makoto Miura, E. Radicioni, M. B. Smy, J. S. Jang, Shuhei Watanabe, A. Konaka, Marco Mattiazzi, David Wark, B. Zaldivar, J. Migenda, M. Lamoureux, T. Ishizuka, M. Friend, S. Zsoldos, B. Bodur, H. A. Tanaka, T. Matsubara, N. W. Prouse, Katsuki Hiraide, Tsuyoshi Nakaya, C. W. Walter, Masaki Ishitsuka, S. Locke, S. Miki, Hirokazu Ishino, J. Feng, Sonia El Hedri, Masahiro Kuze, Yusuke Koshio, John Walker, D. Barrow, S. Mohan Lakshmi, J. L. Raaf, M. Mori, Hiroaki Menjo, Y. Sonoda, F. Nova, S. Sano, R. Sasaki, Marcus O'Flaherty, Takaaki Kajita, Yoshitaka Itow, G. Collazuol, M. Jakkapu, Natalv Ospina, Mark Scott, Y. Nishimura, Hiroyuki Sekiya, Soo-Bong Kim, B. Quilain, James Hill, G. Pronost, M. Inomoto, Y. Fukuda, L. Wan, T. Yano, John Fraser Martin, I. T. Lim, T. Boschi, Y. Maekawa, K. Nakamura, M. J. Wilking, J. Bian, K. Abe, L. Bernard, Y. Nagao, A. Minamino, Tatsushi Kinoshita, S. Izumiyama, C. K. Jung, Hiroshi Ito, N. Jeff Griskevich, P. Paganini, Y. Kanemura, M. Ikeda, A. Giampaolo, Masato Shiozawa, L. Ludovici, B. D. Xu, Yoshihiro Suzuki, S. Moriyama, F. Iacob, M. Shinoki, M. Gonin, J. Xia, L. H. V. Anthony, Masayuki Nakahata, J. G. Learned, R. Matsumoto, Takuto Suganuma, Y. Uchida, A. Ali, Kate Scholberg, Pablo Fernandez, N. McCauley, L. N. Machado, H. K. Tanaka, S. Samani, M. Malek, M. G. Catanesi, Junjie Jiang, William R. Kropp, T. Sekiguchi, M. Harada, S. Chen, Kenzo Nakamura, H. Ozaki, S. Yamamoto, Yuuki Nakano, A. T. Suzuki, K. Okamoto, Hussain Kitagawa, B. Jamieson, G. D. Megias, B. W. Pointon, A. K. Ichikawa, T. Nakadaira, J. Kameda, Lester D.R. Thompson, Yuichi Oyama, V. Takhistov, P. Mijakowski, S. Sakai, T. Hasegawa, Atsushi Takeda, G. Pintaudi, Yasuhiro Nakajima, N. F. Calabria, Joanna Zalipska, K. Sakashita, T. Nakamura, N. Piplani, Intae Yu, N. Ogawa, M. Posiadala-Zezula, C. Yanagisawa, J. Y. Kim, A. Goldsack, S. Nakayama, R. A. Wendell, Y. Kataoka, A. Coffani, O. Stone, Takashi Kobayashi, D. Martin, K. Sato, G.D. Barr, Tatsuya Kikawa, L. Marti, M. Hartz, T. Tashiro, K. Nishijima, T. Wester, Justyna Lagoda, Jingyuan Gao, W. Ma, A. Takenaka, T. Tsukamoto, L. Labarga, T. Ishida, B. Richards, Shintaro Ito, Y. Kotsar, C. Vilela, FD Lodovico, L. Cook, R. Akutsu, Lamoureux, Mathieu, Abe, Ko, Bronner, Christophe, Hayato, Yoshinari, Hiraide, Katsuki, Ikeda, Motoyasu, Kameda, Jun, Kanemura, Yuki, Kataoka, Yousuku, Miki, Shintaro, Miura, Makoto, Moriyama, Shigetaka, Nagao, Yoshiki, Nakahata, Masayuki, Nakayama, Shoei, Okamoto, Kohei, Pronost, Guillaume, Sekiya, Hiroyuki, Shiozawa, Masato, Sonoda, Yutaro, Suzuki, Yoichiro, Takeda, Atsushi, Takemoto, Yasuhiro, Takenaka, Akira, Tanaka, Hidekazu, Watanabe, Shuhei, Yano, Takatomi, Han, Seungho, Kajita, Takaaki, Okumura, Kimihiro, Tashiro, Takuya, Xia, Junjie, Megias, Guillermo, Labarga, Lui, Marti, Llui, Zaldivar, Bryan, Pointon, Barry W., Kearns, Edward, Raaf, Jennifer L., Wan, Linyan, Wester, Thoma, Bian, Jianming, Griskevich, N. Jeff, Kropp, William R., Locke, Scott, Mine, Shunichi, Smy, Michael, Sobel, Henry W., Takhistov, Volodymyr, Hill, Jame, Kim, Jae Yool, Lim, In Taek, Park, Ryeong Gyoon, Bodur, Baran, Scholberg, Kate, Walter, Chri, Bernard, Laura, Coffani, Alice, Drapier, Olivier, El Hedri, Sonia, Giampaolo, Alberto, Gonin, Michel, Mueller, Thomas A., Paganini, Pascal, Quilain, Benjamin, Ishizuka, Takeharu, Nakamura, Taku, Jang, Jae Seung, Learned, John G., Cao, Son, Anthony, Lauren H. V., Martin, Daniel, Scott, Mark, Sztuc, Artur A., Uchida, Yoshi, Berardi, Vincenzo, Catanesi, Maria Gabriella, Radicioni, Emilio, Calabria, Nicola F., Machado, Lucas N., De Rosa, Gianfranca, Collazuol, Gianmaria, Iacob, Fabio, Mattiazzi, Marco, Ospina, Natalv, Ludovici, Lucio, Maekawa, Yuto, Nishimura, Yasuhiro, Friend, Megan, Hasegawa, Takuya, Ishida, Taku, Kobayashi, Takashi, Jakkapu, Mahesh, Matsubara, Tsunayuki, Nakadaira, Takeshi, Nakamura, Kenzo, Oyama, Yuichi, Sakashita, Ken, Sekiguchi, Tetsuro, Tsukamoto, Toshifumi, Boschi, Tommaso, Di Lodovico, Francesca, Gao, Jingyuan, Migenda, Jost, Taani, Mahdi, Zsoldos, Stephane, Nakano, Yuuki, Ozaki, Hironori, Suzuki, Atsumu, Takeuchi, Yasuo, Yamamoto, Shotaro, Kotsar, Yurii, Ali, Ajmi, Feng, Jiahui, Kikawa, Tatsuya, Mori, Masamitsu, Nakaya, Tsuyoshi, Wendell, Roger, Yasutome, Kenji, Fernández, Pablo, Mccauley, Neil, Mehta, Pruthvi, Tsui, Ka Ming, Fukuda, Yoshiyuki, Itow, Yoshitaka, Menjo, Hiroaki, Sato, Kazufumi, Lagoda, Justyna, Lakshmi, S. Mohan, Mijakowski, Piotr, Zalipska, Joanna, Jiang, Junjie, Jung, Chang K., Vilela, Cristovao, Wilking, Michael, Yanagisawa, Chiaki, Harada, Masayuki, Ishino, Hirokazu, Ito, Shintaro, Kitagawa, Hussain, Koshio, Yusuke, Ma, Wenjie, Piplani, Nishtha, Sakai, Seiya, Barr, Gile, Barrow, Danial, Cook, Laurence, Goldsack, Alexander, Samani, Soniya, Wark, David, Nova, Federico, Yang, Jeong Yeol, Jenkins, Sam J., Malek, Matthew, Mcelwee, Jordan, Stone, Owen, Thiesse, Matthew D., Thompson, Lee F., Okazawa, Hiroko, Kim, Soo Bong, Yu, Intae, Ichikawa, Atsuko, Nakamura, Kiseki, Nishijima, Kyoshi, Koshiba, Masatoshi, Iwamoto, Konosuke, Nakajima, Yasuhiro, Ogawa, Natsumi, Yokoyama, Masashi, Martens, Kai, Vagins, Mark, Kuze, Masahiro, Izumiyama, Shota, Inomoto, Michitaka, Ishitsuka, Masaki, Ito, Hiroshi, Kinoshita, Tatsushi, Matsumoto, Ryo, Shinoki, Masataka, Suganuma, Takuto, Martin, John Fraser, Tanaka, Hirohisa, Towstego, Trevor, Akutsu, Ryosuke, de Perio, Patrick, Hartz, Mark, Konaka, Akira, Prouse, Nick, Chen, Shaomin, Xu, Benda D., Posiadala-Zezula, Magdalena, Hadley, David, O'Flaherty, Marcu, Richards, Benjamin, Jamieson, Blair, Walker, John, Minamino, Akihiro, Pintaudi, Ggiorgio, Sano, Shiochi, and Sasaki, Ryota

Subjects
Physics, Particle physics, Gravitational wave, Cherenkov detector, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Detector, Flux, law.invention, law, Time windows, High Energy Physics::Experiment, Total energy, Neutrino, Super-Kamiokande
Abstract

Super-Kamiokande (SK) is a 50-kt water Cherenkov detector, instrumented with $\sim 13$k photo-multipliers and running since 1996. It is sensitive to neutrinos with energies ranging from 4.5 MeV to several TeV. A new framework has been developed for the follow-up of gravitational wave (GW) alerts issued by the LIGO-Virgo collaboration (LVC). Neutrinos are searched for, using a 1000-second time window centered on the alert time and in both SK low-energy and high-energy samples. Such observation can then be used to constrain the neutrino emission from the GW source. The significance of potential signals has been obtained by comparing neutrino direction with the localization of the GW. The computation of limits on incoming neutrino flux and on the total energy emitted in neutrinos by the source has been performed for the different neutrino flavors. The results using the LVC GWTC-2 catalog (covering O3a period) are presented, as well as the outlooks for the future real-time public release of follow-ups for the O4 period (in 2022) and beyond.

Published
2021

20. Neutrino-Nucleus scattering in the SuSA model

Author

M. B. Barbaro, J. E. Amaro, T. W. Donnelly, G. D. Megias, Raúl González-Jiménez, J. A. Caballero, I. Ruiz Simo, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
electron, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, General Physics and Astronomy, Electron, 01 natural sciences, High Energy Physics - Experiment, Nuclear Theory (nucl-th), Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, medicine, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], General Materials Science, Physical and Theoretical Chemistry, 010306 general physics, Neutrino oscillation, Nuclear Experiment, neutrino: interaction, neutrino nucleus: scattering, Physics, 010308 nuclear & particles physics, Scattering, Neutrino-nucleus scattering, nucleus, Charge (physics), super-scaling models, High Energy Physics - Phenomenology, medicine.anatomical_structure, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, neutrino: oscillation, Neutrino, Nucleus
Abstract

The super-scaling approach (SuSA) model, based on the analogies between electron and neutrino interactions with nuclei, is reviewed and its application to the description of neutrino-nucleus scattering is presented. The contribution of both one- and two-body relativistic currents is considered. The model is validated with the (e, e′) data, including also inelastic contributions for the inclusive reaction. A discussion of semi-inclusive reactions and their implications for charge-changing reactions of neutrinos is also presented. A selection of results for the inclusive neutrino reactions with change of charge is presented where theoretical predictions are compared with cross-section measurements from the main ongoing neutrino oscillation experiments., FQM-225, FIS2017-85053-C2-1-P

Published
2021
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22. PD-0867 Development of a Radiotherapy Quality Assessment Tool

Author

Y. M. Tsang and D. megias

Subjects
Service (systems architecture), Process management, Quality management, Computer science, media_common.quotation_subject, Context (language use), Hematology, Resource (project management), Skill mix, Oncology, Multidisciplinary approach, Quality Score, Radiology, Nuclear Medicine and imaging, Quality (business), media_common
Abstract

Purpose or Objective There is increasing focus on developing and implementing quality and service improvement methodology in healthcare practice with it recognised that these principles must be embedded in the governance framework and culture of services. Radiotherapy (RT) pathways are complex and multidisciplinary. This project aims to develop a quality assessment (QA) tool for evaluating operational/technical aspects of RT service within and across different departments. Materials and Methods A multidisciplinary team (MDT) scoping exercise was undertaken within a single large RT centre and theme analysis was cross referenced with associated literature and theories to inform the development of the QA tool. The tool was validated in three different clinical scenarios and the associated processes were refined through MDT inquiries. There as 5 steps to completing the tool as a collaborative MDT. 1. Framing the question Questions can be categorised into two categories. Category 1: Direct comparison between the same service/pathway in two different departments. Category 2: Comparison of two alternative pathways in a single department. 2. Identifying drivers Primary and secondary drivers for answering the given question should be discussed and noted to allow for considered evaluation of scoring following completion of the tool 3. Scoping Review of the metrics/measures of quality and efficiency/resource for different aspects of the pathway should be identified under the headings outlined below. - Structure: Consider the attributes of the service/ pathway such as e.g. Staff to patient ratios, Skill Mix/Pay banding - Process: Consider how each procedure/system of work interacts in order to achieve the outcomes as defined by clinical policies and procedures. - Outcome: Measures should consider the impact on potential endpoints. 4. Scoring Each aspects of the pathway identified under the different headings is discussed and scored according to the scoring matrix for both the quality and efficiency/productivity (table 1). Only a quality score is applied to the outcomes. (Table presented.)ale Results) Clinical example 1 (COVID initiative): telephone vs face to face on treatment consultation Completing the QA tool identified not only that there were comparable outcomes with significant efficiency and potential quality improvement via telephone consultation but also highlighted where enhancement of other areas of the patient pathway were needed. This mitigated patient care risk to allow benefits from this service improvement to be realised.) Clinical example 2: Treatment verification for prostate SABR CBCT vs Fiducial Utilising the tool in this clinical example identified key lines of enquiry from both a clinical and technical perspective and promoted an objective evidence-based approach to evaluating the necessities of fiducials in the context of prostate imaged guided radiotherapy. A pathway change was implemented. Clinical example 3: Eclipse pathway vs Pinnacle pathway The tool was implemented following an MDT incident review meeting. Figure1 shows the visual output after completing the tool scoring comparing the two palliative RT pathways utilising two different RT planning systems. Points 1,2 relate to structure, 3,4,5 to process and 6 the outcome. It was evident that despite the outcome of the two pathways being comparable, pathway 2 represented a quality improvement not only in quality including risk but also efficiency features of the pathway and was implemented in practice. $Φg Conclusion The QA tool can support collaborative service improvements and enhance the governance process within RT services. Analysing the themes of user feedback from those who were involved in the piloting of the QA tool indicated that the tool was supportive in, • Objective independent discussion. • Encouraging collaboration between different professions. • Promoting an evidence-based approach across all aspects of the pathway. • Provided a useful output for reporting within governance process. • Future work has been planned to valid te the tool in a multicentre setting. Future work has been planned to validate the tool in a multicentre setting.

Published
2021
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23. Inclusive Electron Scattering And The GENIE Neutrino Event Generator

Author

mn> ν, S. Dolan, M. Khachatryan, A. Papadopoulou, A. Ashkenazi, S. Gardiner, G. D. Megias, E. Piasetzky, M. Betancourt, S. A. Dytman, F. Hauenstein, Larry Weinstein, Or Hen, mrow, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Department of Energy. United States, Commissariat à l’énergie atomique et aux énergies alternatives (CEA). France, European Union (UE). H2020, Ministerio de Economía y Competitividad (MINECO). España, and Junta de Andalucía

Subjects
Meson, nucl-th, Nuclear Theory, FOS: Physical sciences, Electron, nucl-ex, 7. Clean energy, 01 natural sciences, Resonance (particle physics), High Energy Physics - Experiment, Nuclear physics, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Event generator, Particle Physics - Phenomenology, Physics, 010308 nuclear & particles physics, Scattering, hep-ex, Bremsstrahlung, hep-ph, High Energy Physics - Phenomenology, Nuclear Physics - Theory, Neutrino, Event (particle physics), Particle Physics - Experiment
Abstract

The extraction of neutrino mixing parameters from accelerator-based neutrino oscillation experiments relies on proper modeling of neutrino-nucleus scattering processes using neutrino-interaction event generators. Experimental tests of these generators are difficult due to the broad range of neutrino energies produced in accelerator-based beams and the low statistics of current experiments. Here we overcome these difficulties by exploiting the similarity of neutrino and electron interactions with nuclei to test neutrino event generators using high-precision inclusive electron scattering data. To this end, we revised the electron-scattering mode of the GENIE event generator ($e$-GENIE) to include electron-nucleus bremsstrahlung radiation effects and to use, when relevant, the exact same physics models and model parameters, as the standard neutrino-scattering version. We also implemented new models for quasielastic (QE) scattering and meson exchange currents (MEC) based on the theory-inspired SuSAv2 approach. Comparing the new $e$-GENIE predictions with inclusive electron scattering data, we find an overall adequate description of the data in the QE- and MEC-dominated lower energy transfer regime, especially when using the SuSAv2 models. Higher energy transfer-interactions, which are dominated by resonance production, are still not well modeled by $e$-GENIE., 13 pages, 14 figures. Significantly updated following referee comments

Published
2020

24. Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

Author

Natalie Jachowicz, T.W. Donnelly, K. Niewczas, J. M. Udías, M. B. Barbaro, J. A. Caballero, A. Nikolakopoulos, G. D. Megias, Raúl González-Jiménez, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Gobierno de España, and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Particle physics, distorted wave impulse approximation: relativistic, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], lepton nucleus: scattering, FOS: Physical sciences, potential: optical, Impulse (physics), 01 natural sciences, Coincidence, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, medicine, titanium, 010306 general physics, Nuclear theory, Scaling, energy: low, Physics, Continuum (measurement), 010308 nuclear & particles physics, Scattering, carbon, momentum transfer, scaling, correlation: long-range, Electroweak Interaction, High Energy Physics - Phenomenology, medicine.anatomical_structure, random phase approximation, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], argon, Nucleus, Lepton, Symmetries, Jefferson Lab
Abstract

We show that the quasielastic (QE) response calculated with the SuSAv2 (superscaling approach) model, that relies on the scaling phenomenon observed in the analysis of (e,e') data and on the relativistic mean-field theory, is very similar to that from a relativistic distorted wave impulse approximation model when only the real part of the optical potentials is employed. The coincidence between the results from these two completely independent approaches, which satisfactorily agree with the inclusive data, reinforces the reliability of the quasielastic predictions stemming from both models and sets constraints for the QE response. We also study the low energy and momentum transfer region of the inclusive response by confronting the results of the relativistic mean-field model with those of the Hartree-Fock continuum random-phase approximation model, which accounts for nuclear long-range correlations. Finally, we present a comparison of our results with the recent JLab (e,e') data for argon, titanium and carbon, finding good agreement with the three data sets., 11 pages, 7 figures

Published
2020
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25. New evaluation of the axial nucleon form factor from electron- and neutrino-scattering data and impact on neutrino-nucleus cross sections

Author

M. B. Barbaro, S. Bolognesi, E. Tomasi-Gustafsson, G. D. Megias, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Junta de Andalucía, European Union (UE). H2020, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Meson, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], FOS: Physical sciences, nuclear model, Electron, KAMIOKANDE, model: dipole, form factor: axial, 01 natural sciences, MINERvA, High Energy Physics - Experiment, charged current, Nuclear physics, Nuclear Theory (nucl-th), pi: electroproduction, High Energy Physics - Experiment (hep-ex), Pion, High Energy Physics - Phenomenology (hep-ph), mean field approximation, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], meson: cloud, 010306 general physics, neutrino nucleon: scattering, Nuclear Experiment, neutrino nucleus: scattering, nucleon: form factor, Physics, 010308 nuclear & particles physics, Scattering, J-PARC Lab, Form factor (quantum field theory), parametrization, Electroweak Interaction, form factor: electromagnetic, High Energy Physics - Phenomenology, electron: scattering, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Neutrino, Nucleon, Electron scattering, Symmetries
Abstract

A joint fit to neutrino-nucleon scattering and pion electroproduction data is performed to evaluate the nucleon axial form factor in the two-component model consisting of a three-quark intrinsic structure surrounded by a meson cloud. Further constrains on the model are obtained by re-evaluating the electromagnetic form factor using electron scattering data. The results of the axial form factor show sizable differences with respect to the widely used dipole model. The impact of such changes on the Charged-Current Quasi-Elastic neutrino-nucleus cross-section is evaluated in the SuSAv2 nuclear model, based on the Relativistic Mean Field and including the contribution of two-body currents. How the different parametrizations of the axial form factor affect the cross-section prediction is assessed in full details and comparisons to recent T2K and MINERvA data are presented., 19 pages, 12 figures

Published
2020
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26. Implementation of the SuSAv2-meson exchange current 1p1h and 2p2h models in GENIE and analysis of nuclear effects in T2K measurements

Author

S. Bolognesi, S. Dolan, G. D. Megias, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Département de Physique des Particules (ex SPP) (DPhP)

Subjects
Particle physics, Electroweak interactions, Meson, Hadron, Nuclear Theory, Kinematics, KAMIOKANDE, 01 natural sciences, factorization, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, neutrino: interaction, Event generator, Particle Physics - Phenomenology, Physics, 010308 nuclear & particles physics, J-PARC Lab, High Energy Physics::Phenomenology, T2K experiment, nuclear matter: effect, neutrino nucleus: interaction, semi-inclusive reaction, kinematics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, neutrino: oscillation, Neutrino, numerical calculations: Monte Carlo, Particle Physics - Experiment, Lepton
Abstract

We first present the implementation and validation of the SuSAv2-MEC 1p1h and 2p2h models in the GENIE neutrino-nucleus interaction event generator and a comparison of the subsequent predictions to measurements of lepton and hadron kinematics from the T2K experiment. These predictions are also compared to those of other available models in GENIE. We further compare semi-inclusive predictions of the implemented 1p1h model to those of the microscopic model on which SuSAv2 is based—relativistic mean field—to begin to test the validity of widely used “factorization” assumptions employed by generators to predict hadron kinematics from inclusive input models. The results highlight that a more precise treatment of hadron kinematics in generators is essential in order to attain the few-% level uncertainty on neutrino interactions necessary for the next generation of accelerator-based long-baseline neutrino oscillation experiments. We first present the implementation and validation of the SuSAv2-MEC 1p1h and 2p2h models in the GENIE neutrino-nucleus interaction event generator and a comparison of the subsequent predictions to measurements of lepton and hadron kinematics from the T2K experiment. These predictions are also compared to those of other available models in GENIE. We additionally compare the semi-inclusive predictions of the implemented 1p1h model to those of the microscopic model on which SuSAv2 is based - Relativistic Mean Field (RMF) - to begin to test the validity of widely-used `factorisation' assumptions employed by generators to predict hadron kinematics from inclusive input models. The results highlight that a more precise treatment of hadron kinematics in generators is essential in order to attain the few-% level uncertainty on neutrino interactions necessary for the next generation of accelerator-based long-baseline neutrino oscillation experiments.

Published
2020
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27. Realistic spectral function model for charged-current quasielastic-like neutrino and antineutrino scattering cross sections on C12

Author

J. M. Udías, A. N. Antonov, M. B. Barbaro, J. E. Amaro, T.W. Donnelly, I. Ruiz Simo, J. A. Caballero, M. V. Ivanov, and G. D. Megias

Subjects
Physics, Range (particle radiation), 010308 nuclear & particles physics, Scattering, Nuclear Theory, 01 natural sciences, 7. Clean energy, Nuclear physics, MiniBooNE, Pion, Atomic orbital, 0103 physical sciences, Neutrino, 010306 general physics, Fermi gas, Charged current
Abstract

A detailed study of charged current quasielastic neutrino and antineutrino scattering cross sections on a C-12 target with no pions in the final state is presented. The initial nucleus is described by means of a realistic spectral function S(p, epsilon) in which nucleon-nucleon correlations are implemented by using natural orbitals through the Jastrow method. The roles played by these correlations and by final-state interactions are analyzed and discussed. The model also includes the contribution of weak two-body currents in the two-particle two-hole sector, evaluated within a fully relativistic Fermi gas. The theoretical predictions are compared with a large set of experimental data for double-differential, single-differential, and total integrated cross sections measured by the MiniBooNE, MINER nu A, and T2K experiments. Good agreement with experimental data is found over the whole range of neutrino energies. The results are also in global good agreement with the predictions of the superscaling approach, which is based on the analysis of electron-nucleus scattering data, with only a few differences seen at specific kinematics.

Published
2019
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28. Charged-current quasielastic (anti)neutrino cross sections on 12C with realistic spectral functions including meson-exchange contributions

Author

J. M. Udías, G. D. Megias, J. A. Caballero, M. V. Ivanov, T. W. Donnelly, A. N. Antonov, M. B. Barbaro, I. Ruiz Simo, J. E. Amaro, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, Junta de Andalucía, and European Union (UE)

Subjects
Nuclear physics, Physics, Meson, Atomic orbital, Nuclear Physics - Theory, Nuclear Theory, Nuclear Physics - Experiment, Neutrino, Wave function, Fermi gas, Scaling, Electron scattering, Charged current
Abstract

We present a detailed study of charged-current quasielastic (anti)neutrino scattering cross sections on a 12C target obtained using a spectral function that gives a scaling function in accordance with the electron scattering data. The spectral function accounts for the nucleon-nucleon (NN) correlations, it has a realistic energy dependence and natural orbitals (NO’s) from the Jastrow correlation method are used in its construction. The results are compared with those when NN correlations are not included, namely when harmonicoscillator single-particle wave functions are used instead of NO’s. A comparison of the results with recent experiments, as well as to results from the superscaling approach is done. The contribution of two-particle two-hole mesonexchange currents on neutrino–nucleus interactions is also considered within a fully relativistic Fermi gas. The results show a good agreement with the experimental data. Spanish Ministerio de Economia y Competitividad and ERDF (European Regional Development Fund) FIS2014-59386-P, FIS2014-53448-C2-1, FIS2017-88410-P, FIS2017-85053-C2-1-P, FPA2015-65035-P Junta de Andalucia FQM-225, FQM160, FQM7632 University of Turin BARM-RILO-17

Published
2019

29. Analysis of the MINERvA antineutrino double-differential cross sections within the SuSAv2 model including meson-exchange currents

Author

Juan Antonio Caballero, Maria Benedetta Barbaro, Guillermo D. Megias, Stephen Dolan, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Junta de Andalucía, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Scattering cross-section, mean field approximation: relativistic, Electroweak interactions, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], FOS: Physical sciences, 01 natural sciences, beam: energy, MINERvA, Neutrino scattering, charged current, energy dependence, Nuclear physics, Nuclear Theory (nucl-th), Cross section (physics), meson: exchange, 0103 physical sciences, neutrino: scattering, 010306 general physics, Charged current, total cross section, neutrino nucleus: scattering, nucleon: form factor, Physics, 010308 nuclear & particles physics, impulse approximation, differential cross section, Beam energy, Differential (mathematics)
Abstract

We compare the results of the SuSAv2 model including meson-exchange currents (MEC) with the recent measurement of the quasielastic-like double differential antineutrino cross section on hydrocarbon (CH) performed by the MINERvA Collaboration. The relativistic nature of the model makes it suitable to describe these data, which correspond to a mean beam energy of 3.5 GeV. The standard SuSAv2 model predictions agree well with the data without needing any additional or tuned parameter. The role of longitudinal MEC is non-negligible and improves the agreement with the data. We also consider the impact of different treatments of the $\Delta$-resonance propagator in the two-body currents on the data comparison., Comment: 9 pages, 4 figures

Published
2019
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30. Mean field and two-body nuclear effects in inclusive electron scattering on argon, carbon and titanium: the superscaling approach

Author

M. B. Barbaro, A. De Pace, Raúl González-Jiménez, T.W. Donnelly, G. D. Megias, J. A. Caballero, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Junta de Andalucía, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Ministerio de Ciencia, Innovación y Universidades (España), Department of Energy (US), Istituto Nazionale di Fisica Nucleare, Università di Torino, Comunidad de Madrid, Universidad Complutense de Madrid, and Universidad de Sevilla

Subjects
Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], energy spectrum, chemistry.chemical_element, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Nuclear physics, Momentum, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology (hep-ph), deep inelastic scattering, 0103 physical sciences, titanium, 010306 general physics, Scaling, neutrino nucleus: scattering, Physics, Argon, 010308 nuclear & particles physics, carbon, scaling, Electroweak Interaction, two-particle, High Energy Physics - Phenomenology, chemistry, Mean field theory, electron: scattering, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], argon, Electron scattering, Carbon, Titanium, Fermi Gamma-ray Space Telescope, Symmetries, Jefferson Lab
Abstract

6 pags., 4 figs., We compare the predictions of the superscaling approach (SuSAv2) model including two-particle two-hole meson-exchange currents with the recent JLab data for inclusive electron scattering on three different targets (C, Ar, and Ti). The agreement is very good over the full energy spectrum, with some discrepancy seen only in the deep inelastic region. The 2p2h response, peaked in the dip region between the quasielastic and Δ-resonance peak, is essential to reproduce the data. We also analyze the kF (Fermi momentum) dependence of the data in terms of scaling of the second kind, showing that the 2p2h response scales very differently from the quasielastic one, in full accord with what is predicted by the model. The results represent a valuable test of the applicability of the model to neutrino scattering processes on different nuclei., This work was partially supported by the Spanish Ministerio de Economia y Competitividad and ERDF (European Regional Development Fund) under Contract No. FIS2017-88410-P, by the Junta de Andalucia (Grant No. FQM160), and part (T.W.D.) by the U.S. Department of Energy under cooperative agreement DE-FC02- 94ER40818. M.B.B. and A.D.P. acknowledge support by the Istituto Nazionale di Fisica Nucleare under project Iniziativa Specifica MANYBODY and the University of Turin under Project BARM-RILO-17. R.G.-J. was supported by Comunidad de Madrid and University Complutense of Madrid under Contract No. 2017-T2/TIC-5252. G.D.M. acknowledges support from the University of Seville and CEA-Irfu under a Junta de Andalucia fellowship (FQM7632, Proyectos de Excelencia 2011).

Published
2019
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31. Modeling Neutrino-Nucleus Interactions for Neutrino Oscillation Experiments

Author

S. Bolognesi, S. Dolan, G. D. Megias, Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département de Physique des Particules (ex SPP) (DPhP), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
mean field approximation: relativistic, Particle physics, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Bar (music), FOS: Physical sciences, KAMIOKANDE, Weak interaction, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, Monte Carlo, Physics, cross section: charged current, model: relativistic, 010308 nuclear & particles physics, J-PARC Lab, neutrino nucleus: interaction, antineutrino, Action (physics), High Energy Physics - Phenomenology, Mean field theory, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Excited state, neutrino: oscillation, Neutrino, nucleus: excited state, Event (particle physics)
Abstract

We present our recent progress on the relativistic modeling of neutrino-nucleus reactions for their implementation in MonteCarlo event generators (GENIE, NEUT) employed in neutrino oscillation experiments. We compare charged-current neutrino and antineutrino cross sections obtained within the SuSAv2 model, which is based on the Relativistic Mean Field theory and on the analysis of the superscaling behavior exhibited by ($e,e'$) data. We also evaluate and discuss the impact of multi-nucleon excitations arising from 2p-2h states excited by the action of weak forces in a fully relativistic framework, showing for the first time their implementation in GENIE and their comparison with recent T2K data., 2 pages, 1 figure. Rabida 18 - International Scientific Meeting on Nuclear Physics: Basic concepts in Nuclear Physics: theory, experiments and applications. La R\'abida (Spain) 18th-22th June 2018. To be published in Springer Proceedings in Physics

Published
2019
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32. Electron- versus neutrino-nucleus scattering

Author

M. B. Barbaro, I. Ruiz Simo, G. D. Megias, J. E. Amaro, Raúl González-Jiménez, and J. A. Caballero

Subjects
Nuclear and High Energy Physics, Nuclear Theory, FOS: Physical sciences, Electron, Inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Neutrino scattering, Nuclear Theory (nucl-th), Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, medicine, Nuclear Experiment, 010306 general physics, Nuclear theory, Physics, Range (particle radiation), 010308 nuclear & particles physics, Scattering, High Energy Physics - Phenomenology, medicine.anatomical_structure, High Energy Physics::Experiment, Neutrino, Nucleus
Abstract

We illustrate the connection between electron and neutrino scattering off nuclei and show how the former process can be used to constrain the description of the latter. After reviewing some of the nuclear models commonly used to study lepton-nucleus reactions, we describe in detail the SuSAv2 model and show how its predictions compare with the available electron- and neutrino-scattering data over the kinematical range going from the quasi-elastic peak to pion-production and highly inelastic scattering., Comment: Shortened version, 71 pages, review article, 52 figures

Published
2020
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33. Asymmetric Relativistic Fermi Gas model for quasielastic lepton-nucleus scattering

Author

J. A. Caballero, J. W. Van Orden, M. B. Barbaro, T.W. Donnelly, G. D. Megias, A. De Pace, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), and Junta de Andalucía

Subjects
Nuclear and High Energy Physics, Proton, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Astrophysics::High Energy Astrophysical Phenomena, lepton nucleus: scattering, FOS: Physical sciences, 25.30.Pt, p: density, 01 natural sciences, charged current, 24.10.Jv, Nuclear Theory (nucl-th), Nuclear physics, 13.15.+g, 0103 physical sciences, medicine, neutrino: scattering, Neutron, 010306 general physics, Neutrino oscillation, Nuclear Experiment, numerical calculations, energy: low, Physics, electroweak interaction, 010308 nuclear & particles physics, Scattering, nucleus: target, Electroweak interaction, Fermi gas: relativistic, medicine.anatomical_structure, nuclear matter: asymmetry, differential cross section, neutrino: oscillation, Fermi gas, Nucleus, Lepton, Symmetries
Abstract

We develop an asymmetric relativistic Fermi gas model for the study of the electroweak nuclear response in the quasielastic region. The model takes into account the differences between neutron and proton densities in asymmetric (N > Z) nuclei, as well as differences in the neutron and proton separation energies. We present numerical results for both neutral and charged current processes, focusing on nuclei of interest for ongoing and future neutrino oscillation experiments. We point out some important differences with respect to the commonly employed symmetric Fermi gas model., 18 pages, 10 figures

Published
2018
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34. Two-nucleon emission in neutrino and electron scattering from nuclei: the modified convolution approximation

Author

J. E. Amaro, T. W. Donnelly, J. A. Caballero, I. Ruiz Simo, M. B. Barbaro, and G. D. Megias

Subjects
Nuclear Theory, Meson-exchange current, General Physics and Astronomy, FOS: Physical sciences, Kinematics, 01 natural sciences, Nuclear Theory (nucl-th), Physics and Astronomy (all), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 2p2h, Neutrino scattering, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Scattering, Electroweak interaction, High Energy Physics - Phenomenology, Phase space, Quantum electrodynamics, Neutrino, Nucleon, Fermi gas, Electron scattering
Abstract

The theoretical formalism of inclusive lepton-nucleus scattering in the two-nucleon emission channel is discussed in the context of a simplified approach, the modified convolution approximation. This allows one to write the 2p2h responses of the relativistic Fermi gas as a folding integral of two 1p1h responses with the energies and momenta transferred to each nucleon. The idea behind this method is to introduce different average momenta for the two initial nucleons in the matrix elements of the two-body current, with the innovation that they depend on the transferred energies and momenta. This method treats exactly the two-body phase space kinematics, and reduces the formulae of the response functions from seven-dimensional integrals over momenta to much simpler three-dimensional ones. The applicability of the method is checked by comparing with the full results within a model of electroweak meson-exchange currents. The predictions are accurate enough, especially in the low-energy threshold region where the average momentum approximation works the best., 35 pages, 13 figures

Published
2017

35. The frozen nucleon approximation in two-particle two-hole response functions

Author

M. B. Barbaro, J. E. Amaro, T.W. Donnelly, G. D. Megias, J. A. Caballero, I. Ruiz Simo, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear and High Energy Physics, Nuclear Theory, Monte Carlo method, FOS: Physical sciences, Electron, 01 natural sciences, Nuclear Theory (nucl-th), Momentum, Nuclear physics, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Neutrino scattering, 010306 general physics, Physics, Meson-exchange currents, 010308 nuclear & particles physics, Momentum transfer, Electroweak interaction, lcsh:QC1-999, High Energy Physics - Phenomenology, Phase space, Quantum electrodynamics, 2p–2h, Meson-exchange currents 2p–2h, Neutrino, Nucleon, lcsh:Physics
Abstract

We present a fast and efficient method to compute the inclusive two-particle two-hole (2p-2h) electroweak responses in the neutrino and electron quasielastic inclusive cross sections. The method is based on two approximations. The first neglects the motion of the two initial nucleons below the Fermi momentum, which are considered to be at rest. This approximation, which is reasonable for high values of the momentum transfer, turns out also to be quite good for moderate values of the momentum transfer $q\gtrsim k_F$. The second approximation involves using in the "frozen" meson-exchange currents (MEC) an effective $\Delta$-propagator averaged over the Fermi sea. Within the resulting "frozen nucleon approximation", the inclusive 2p-2h responses are accurately calculated with only a one-dimensional integral over the emission angle of one of the final nucleons, thus drastically simplifying the calculation and reducing the computational time. The latter makes this method especially well-suited for implementation in Monte Carlo neutrino event generators., Comment: 8 pages, 5 figures and 1 table

Published
2017

36. Density dependence of 2p-2h meson-exchange currents

Author

M. B. Barbaro, J. E. Amaro, A. De Pace, G. D. Megias, T.W. Donnelly, I. Ruiz Simo, J. A. Caballero, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, and Junta de Andalucía

Subjects
Physics, Condensed Matter::Quantum Gases, Nuclear and High Energy Physics, Nuclear Theory, Scale (ratio), Meson, 010308 nuclear & particles physics, Momentum transfer, FOS: Physical sciences, 01 natural sciences, Nuclear physics, Momentum, Nuclear Theory (nucl-th), Cross section (physics), 0103 physical sciences, Condensed Matter::Strongly Correlated Electrons, 010306 general physics, Fermi gas, Nuclear Experiment, Scaling, Fermi Gamma-ray Space Telescope
Abstract

We analyze the density dependence of the contribution of meson-exchange currents to the lepton-nucleus inclusive cross section in the two-particle two-hole channel. The model is based on the Relativistic Fermi Gas, where each nucleus is characterized by its Fermi momentum $k_F$. We find that the 2p-2h nuclear response functions at their peaks scale as $A k_F^2$ for Fermi momentum going from 200 to 300 MeV/c and momentum transfer $q$ from $2k_F$ to 2 GeV/c. This behavior is different from what is found for the quasielastic response, which scales as $A/k_F$. Additionally, the deep scaling region is also discussed and there the usual scaling behavior is found to be preferable., Comment: 9 pages, 8 figures

Published
2017
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38. Individual differential privacy: A utility-preserving formulation of differential privacy guarantees

Author

Seguretat i Privadesa, Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili, Soria-Comas, J.; Domingo-Ferrer, J.; Sanchez, D.; Megias, D., Seguretat i Privadesa, Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili, and Soria-Comas, J.; Domingo-Ferrer, J.; Sanchez, D.; Megias, D.

Abstract

DOI: 10.1109/TIFS.2017.2663337 URL: http://ieeexplore.ieee.org/document/7839941/ Filiació URV: SI Info.add.: Article number 7839941, Differential privacy is a popular privacy model within the research community because of the strong privacy guarantee it offers, namely that the presence or absence of any individual in a data set does not significantly influence the results of analyses on the data set. However, enforcing this strict guarantee in practice significantly distorts data and/or limits data uses, thus diminishing the analytical utility of the differentially private results. In an attempt to address this shortcoming, several relaxations of differential privacy have been proposed that trade off privacy guarantees for improved data utility. In this paper, we argue that the standard formalization of differential privacy is stricter than required by the intuitive privacy guarantee it seeks. In particular, the standard formalization requires indistinguishability of results between any pair of neighbor data sets, while indistinguishability between the actual data set and its neighbor data sets should be enough. This limits the data controller's ability to adjust the level of protection to the actual data, hence resulting in significant accuracy loss. In this respect, we propose individual differential privacy, an alternative differential privacy notion that offers the same privacy guarantees as standard differential privacy to individuals (even though not to groups of individuals). This new notion allows the data controller to adjust the distortion to the actual data set, which results in less distortion and more analytical accuracy. We propose several mechanisms to attain individual differential privacy and we compare the new notion against standard differential privacy

Published
2017

39. Inclusive electron scattering within the SuSAv2 meson-exchange current approach

Author

J. E. Amaro, G. D. Megias, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Scattering, Nuclear Theory, Deep inelastic scattering, 01 natural sciences, Resonance (particle physics), Nuclear physics, Mean field theory, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Fermi gas, Electron scattering, Scaling
Abstract

We present our recent progress on the relativistic modeling of electron-nucleus reactions and compare our predictions with inclusive 12C (e, e′) experimental data in a wide kinematical region. The model, originally based on the superscaling phenomenon shown by electron-nucleus scattering data, has recently been improved through the inclusion of relativistic mean field theory effects that take into account the enhancement of the quasielastic transverse scaling function compared with its longitudinal counterpart. In this work, we extend the model to include the complete inelastic spectrum—resonant, nonresonant and deep inelastic scattering. We also discuss the impact of meson-exchange currents through the analysis of two-particle two-hole contributions to electromagnetic response functions evaluated within the framework of the relativistic Fermi gas, considering for the first time not only the transverse but also the longitudinal channel. The results show quite good agreement with data over the whole range of energy transfer, including the dip region between the quasielastic peak and the Δ resonance. Direccion General de Investigacion Cientifica y Tecnica y FEDER FIS2014-53448-C2-1 FIS2014-59386-P Junta de Andalucía FQM225 Spanish Consolider-Ingenio 2000 program CPAN CSD2007-0004 U.S. Department of Energy DE-FG02-94ER40818

Published
2016

40. Emission of neutron-proton and proton-proton pairs in electron scattering induced by meson-exchange currents

Author

J. E. Amaro, T. W. Donnelly, M. B. Barbaro, J. A. Caballero, I. Ruiz Simo, A. De Pace, G. D. Megias, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, and Junta de Andalucía

Subjects
Physics, Nuclear and High Energy Physics, Nuclear Theory, Proton, Meson, 010308 nuclear & particles physics, Scattering, FOS: Physical sciences, 01 natural sciences, Nuclear Theory (nucl-th), Nuclear physics, 0103 physical sciences, Isobar, Neutron, Atomic physics, 010306 general physics, Fermi gas, Nucleon, Nuclear Experiment, Electron scattering
Abstract

We use a relativistic model of meson-exchange currents to compute the proton-neutron and proton-proton yields in $(e,e')$ scattering from $^{12}$C in the 2p-2h channel. We compute the response functions and cross section with the relativistic Fermi gas model for a range of kinematics from intermediate to high momentum transfers. We find a large contribution of neutron-proton configurations in the initial state, as compared to proton-proton pairs. The different emission probabilities of distinct species of nucleon pairs are produced in our model only by meson-exchange currents, mainly by the $\Delta$ isobar current. We also analyze the effect of the exchange contribution and show that the direct/exchange interference strongly affects the determination of the np/pp ratio., Comment: 5 pages, 6 figures

Published
2016

41. Relativistic Modeling of Inclusive Neutrino-Nucleus Interactions in the SuperScaling Approach

Author

G. D. Megias, J. A. Caballero, T.W. Donnelly, J. E. Amaro, and M. B. Barbaro

Subjects
Physics, Nuclear physics, Physics and Astronomy (all), Range (particle radiation), medicine.anatomical_structure, medicine, Neutrino, Nucleus
Abstract

We present our recent progresses on the relativistic modeling of neutrino-nucleus reactions (G.D. Megias et al., Phys. Lett. B, 725:170–174, 2003; Phys. Rev. D 89:093002, 2014; M.V. Ivanov et al., Phys. Rev. C 89:014607, 2014; R. Gonzalez-Jimenez et al., Phys. Rev. C 90:035501, 2014; G.D. Megias et al., Phys. Rev. D 91;073004, 2015; M.V. Ivanov et al., J. Phys. G 43:045101, 2016; A.M. Ankowski et al., Phys. Rev. C 92;025501, 2015) and comparisons with high precision experimental data in a wide energy range (0–100 GeV).

Published
2016
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42. Charged-current neutrino-nucleus reactions within the superscaling meson-exchange current approach

Author

G. D. Megias, M. B. Barbaro, I. Ruiz Simo, J. A. Caballero, T.W. Donnelly, J. E. Amaro, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Physics, Range (particle radiation), Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Scattering, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, 01 natural sciences, Nuclear physics, Mean field theory, 0103 physical sciences, Neutrino, Current (fluid), 010306 general physics, Fermi gas, Nuclear Experiment, Charged current
Abstract

We present a detailed study of charged-current neutrino-nucleus reactions in a fully relativistic framework and comparisons with recent experiments spanning an energy range from hundreds of MeV up to 100 GeV within the superscaling approach, which is based on the analysis of electron-nucleus scattering data and has been recently improved with the inclusion of relativistic mean field theory effects. We also evaluate and discuss the impact of two-particle two-hole meson-exchange currents on neutrino-nucleus interactions through the analysis of two-particle two-hole axial and vector contributions to weak response functions in a fully relativistic Fermi gas. The results show a fairly good agreement with experimental data over the whole range of neutrino energies.

Published
2016

43. Emission of neutron–proton and proton–proton pairs in neutrino scattering

Author

M. B. Barbaro, A. De Pace, I. Ruiz Simo, J. A. Caballero, J. E. Amaro, G. D. Megias, T.W. Donnelly, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear and High Energy Physics, Proton, Nuclear Theory, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 01 natural sciences, Neutrino scattering, Nuclear physics, Nuclear Theory (nucl-th), Cross section (physics), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Neutron, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Scattering, lcsh:QC1-999, High Energy Physics - Phenomenology, Isobar, Atomic physics, Fermi gas, Nucleon, lcsh:Physics
Abstract

We use a recently developed model of relativistic meson-exchange currents to compute the neutron-proton and proton-proton yields in $(\nu_\mu,\mu^-)$ scattering from $^{12}$C in the 2p-2h channel. We compute the response functions and cross sections with the relativistic Fermi gas model for different kinematics from intermediate to high momentum transfers. We find a large contribution of neutron-proton configurations in the initial state, as compared to proton-proton pairs. In the case of charge-changing neutrino scattering the 2p-2h cross section of proton-proton emission ({\it i.e.,} np in the initial state) is much larger than for neutron-proton emission ({\it i.e.,} two neutrons in the initial state) by a $(\omega,q)$-dependent factor. The different emission probabilities of distinct species of nucleon pairs are produced in our model only by meson-exchange currents, mainly by the $\Delta$ isobar current. We also analyze other effects including exchange contributions and the effect of the axial and vector currents., Comment: 9 pages and 8 figures

Published
2016

45. Neutrino–oxygen CC0π scattering in the SuSAv2-MEC model

Author

M.B. Barbaro, G. D. Megias, J. E. Amaro, J. W. Van Orden, J. A. Caballero, I. Ruiz Simo, and T.W. Donnelly

Subjects
Nuclear and High Energy Physics, Nuclear Theory, Physics::Instrumentation and Detectors, superscaling, chemistry.chemical_element, 2p2h MEC, neutrino oscillations, neutrino-nucleus reactions, SuSAv2 model, T2K experiment, 01 natural sciences, Oxygen, Nuclear physics, Cross section (physics), 0103 physical sciences, 010306 general physics, Neutrino oscillation, Physics, 010308 nuclear & particles physics, Scattering, High Energy Physics - Phenomenology, chemistry, High Energy Physics::Experiment, Neutrino, Electron scattering, Beam (structure)
Abstract

We present the predictions of the SuSAv2-MEC model for the double differential charged-current muonic neutrino (antineutrino) cross section on water for the T2K neutrino (antineutrino) beam. We validate our model by comparing with the available inclusive electron scattering data on oxygen and compare our predictions with the recent T2K $\nu_\mu$-$^{16}$O data, finding good agreement at all kinematics. We show that the results are very similar to those obtained for $\nu_\mu-^{12}$C scattering, except at low energies, and we comment on the origin of this difference. A factorized spectral function model of $^{16}$O is also included for purposes of comparison., Comment: 28 pages, 10 figures, JLAB-THY-17-2586. Version 2 accepted for publication in Journal of Physics G: Nucl. Part. Phys

Published
2018
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46. Nuclear effects in (anti)neutrino charge-current quasielastic scattering at MINER νA kinematics

Author

M.B. Barbaro, Raúl González-Jiménez, G. D. Megias, J. M. Udías, A. N. Antonov, J. A. Caballero, M. V. Ivanov, T.W. Donnelly, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, and Bulgarian National Science Fund

Subjects
Physics, History, Quasielastic scattering, Meson, Scattering, Nuclear Theory, Inelastic scattering, Computer Science Applications, Education, Nuclear physics, MiniBooNE, Física nuclear, Neutrino, Nuclear Experiment, Nucleon, Charged current
Abstract

We compare the characteristics of the charged-current quasielastic (anti)neutrino scattering obtained in two different nuclear models, the phenomenological SuperScaling Approximation and the model using a realistic spectral function S(p, ) that gives a scaling function in accordance with the (e, e') scattering data, with the recent data published by the MiniBooNE, MINER νA, and NOMAD collaborations. The spectral function accounts for the nucleon-nucleon (NN) correlations by using natural orbitals from the Jastrow correlation method and has a realistic energy dependence. Both models provide a good description of the MINER νA and NOMAD data without the need of an ad hoc increase of the value of the mass parameter in the axial-vector dipole form factor. The models considered in this work, based on the the impulse approximation (IA), underpredict the MiniBooNE data for the flux-averaged charged-current quasielastic differential cross section per nucleon and the total cross sections, although the shape of the cross sections is represented by the approaches. The discrepancy is most likely due to missing of the effects beyond the IA, e.g., those of the 2p–2h meson exchange currents that have contribution in the transverse responses. Bulgarian National Science Fund DFNI-T02/19 and DFNI-E02/6

Published
2018
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47. Meson-exchange currents and quasielastic predictions for charged-current neutrino-C12scattering in the superscaling approach

Author

A. De Pace, J. E. Amaro, T. W. Donnelly, J. A. Caballero, W.M. Alberico, M. B. Barbaro, O. Moreno, Raúl González-Jiménez, M. Nardi, C. F. Williamson, and G. D. Megias

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Isovector, Meson, Nuclear Theory, Energy–momentum relation, Nuclear physics, Excited state, Neutrino, Nuclear Experiment, Neutrino oscillation, Parametrization, Charged current
Abstract

We evaluate and discuss the impact of meson-exchange currents (MECs) on charged-current quasielastic neutrino cross sections. We consider the nuclear transverse response arising from two-particle two-hole states excited by the action of electromagnetic, purely isovector meson-exchange currents in a fully relativistic framework based on the work by the Torino Collaboration [A. D. Pace, M. Nardi, W. M. Alberico, T. W. Donnelly, and A. Molinari, Nucl. Phys. A726, 303 (2003)]. An accurate parametrization of this MEC response as a function of the momentum and energy transfers involved is presented. Results of neutrino-nucleus cross sections using this MEC parametrization together with a recent scaling approach for the one-particle one-hole contributions (named SuSAv2) are compared with experimental data.

Published
2015
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48. Erratum: Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics [Phys. Rev. D89, 093002 (2014)]

Author

T. W. Donnelly, M. B. Barbaro, G. D. Megias, J. M. Udias, J. A. Caballero, M. V. Ivanov, and Raúl González-Jiménez

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Quasielastic scattering, Kinematics, Neutrino, Nuclear theory, Charged current, Neutrino scattering
Published
2015
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49. Charged-current inclusive neutrino cross sections in the SuperScaling model including quasielastic, pion production and meson-exchange contributions

Author

T. W. Donnelly, M. B. Barbaro, M. V. Ivanov, O. Moreno, Raúl González-Jiménez, J. A. Caballero, G. D. Megias, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
mesonexchange, Meson- exchange, Delta-resonance, Nuclear and High Energy Physics, Meson, Nuclear Theory, pion production, superscaling, Nuclear physics, FOS: Physical sciences, Pion production, Inelastic scattering, 01 natural sciences, delta-resonance, MiniBooNE, Nuclear Theory (nucl-th), neutrino, Pion, nuclear physics, Neutrino, 0103 physical sciences, 010306 general physics, Charged current, Physics, Quasielastic scattering, 010308 nuclear & particles physics, Superscaling, Electron scattering
Abstract

Charged current inclusive neutrino-nucleus cross sections are evaluated using the superscaling model for quasielastic scattering and its extension to the pion production region. The contribution of two-particle-two-hole vector meson-exchange current excitations is also considered within a fully relativistic model tested against electron scattering data. The results are compared with the inclusive neutrino-nucleus data from the T2K and SciBooNE experiments. For experiments where $\langle E_\nu \rangle \sim 0.8$ GeV, the three mechanisms considered in this work provide good agreement with the data. However, when the neutrino energy is larger, effects from beyond the $\Delta$ also appear to be playing a role. The results show that processes induced by two-body currents play a minor role at the kinematics considered., Comment: 10 pages, 7 figures

Published
2015
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50. Star formation across the w3 complex

Author

Carlos Román-Zúñiga, Mauricio Tapia, João Alves, G. D. Megias, Jason E. Ybarra, Elizabeth A. Lada, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, and Consejo Nacional de Ciencia y Tecnología (CONACYT). México

Subjects
010504 meteorology & atmospheric sciences, FOS: Physical sciences, Astrophysics, Star (graph theory), 01 natural sciences, Luminosity, pre-main sequence [Stars], 0103 physical sciences, Cluster (physics), 010303 astronomy & astrophysics, Stellar evolution, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, formation [Stars], luminosity function [Stars], 0105 earth and related environmental sciences, stars [X-rays], Physics, Star formation, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, ISM [Radio lines], T Tauri star, Stars, Star cluster, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA)
Abstract

We present a multi-wavelength analysis of the history of star formation in the W3 complex. Using deep, near-infrared ground-based images, combined with images obtained with Spitzer and Chandra observatories, we identified and classified young embedded sources. We identified the principal clusters in the complex, and determined their structure and extension. We constructed extinction-limited samples for five principal clusters, and constructed K-band luminosity functions (KLF) that we compare with those of artificial clusters with varying ages. This analysis provided mean ages and possible age spreads for the clusters. We found that IC 1795, the centermost cluster of the complex, still hosts a large fraction of young sources with circumstellar disks. This indicates that star formation was active in IC 1795 as recently as 2 Myr ago, simultaneous to the star forming activity in the flanking embedded clusters, W3-Main and W3(OH). A comparison with carbon monoxide emission maps indicates strong velocity gradients in the gas clumps hosting W3-Main and W3(OH) and show small receding clumps of gas at IC 1795, suggestive of rapid gas removal (faster than the T Tauri timescale) in the cluster forming regions. We discuss one possible scenario for the progression of cluster formation in the W3 complex. We propose that early processes of gas collapse in the main structure of the complex could have defined the progression of cluster formation across the complex with relatively small age differences from one group to another. However, triggering effects could act as catalysts for enhanced efficiency of formation at a local level, in agreement with previous studies., Comment: Manuscript Version. 44 pages, 14 figures. Accepted for publication in The Astronomical Journal

Published
2015

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