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28 results on '"Hayato, Y."'

1. Combined Pre-supernova Alert System with KamLAND and Super-Kamiokande

Author

Abe, S, Eizuka, M, Futagi, S, Gando, A, Gando, Y, Goto, S, Hachiya, T, Hata, K, Ichimura, K, Ieki, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Kamei, Y, Kawada, N, Kishimoto, Y, Koga, M, Kurasawa, M, Mitsui, T, Miyake, H, Morita, D, Nakahata, T, Nakajima, R, Nakamura, K, Nakamura, R, Nakane, J, Ozaki, H, Saito, K, Sakai, T, Shimizu, I, Shirai, J, Shiraishi, K, Shoji, R, Suzuki, A, Takeuchi, A, Tamae, K, Watanabe, H, Watanabe, K, Yoshida, S, Umehara, S, Fushimi, K, Kotera, K, Urano, Y, Berger, BE, Fujikawa, BK, Learned, JG, Maricic, J, Fu, Z, Smolsky, J, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Dell’Oro, S, O’Donnell, T, Detwiler, JA, Enomoto, S, Decowski, MP, Weerman, KM, Grant, C, Song, H, Li, A, Axani, SN, Garcia, M, Collaboration, The KamLAND, Abe, K, Bronner, C, Hayato, Y, Hiraide, K, Hosokawa, K, Ieki, K, Ikeda, M, Kameda, J, Kanemura, Y, Kaneshima, R, Kashiwagi, Y, Kataoka, Y, Miki, S, Mine, S, Miura, M, Moriyama, S, Nakahata, M, Nakano, Y, Nakayama, S, Noguchi, Y, Sato, K, Sekiya, H, Shiba, H, Shimizu, K, Shiozawa, M, Sonoda, Y, Suzuki, Y, Takeda, A, Takemoto, Y, Tanaka, H, Yano, T, and Han, S

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics, Space sciences
Abstract

Preceding a core-collapse supernova (CCSN), various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande (SK) via inverse beta decay interactions. Once these pre-supernova (pre-SN) neutrinos are observed, an early warning of the upcoming CCSN can be provided. In light of this, KamLAND and SK, both located in the Kamioka mine in Japan, have been monitoring pre-SN neutrinos since 2015 and 2021, respectively. Recently, we performed a joint study between KamLAND and SK on pre-SN neutrino detection. A pre-SN alert system combining the KamLAND detector and the SK detector was developed and put into operation, which can provide a supernova alert to the astrophysics community. Fully leveraging the complementary properties of these two detectors, the combined alert is expected to resolve a pre-SN neutrino signal from a 15 M ⊙ star within 510 pc of the Earth at a significance level corresponding to a false alarm rate of no more than 1 per century. For a Betelgeuse-like model with optimistic parameters, it can provide early warnings up to 12 hr in advance.

Published
2024

2. Review of Particle Physics*

Author

Navas, S, Amsler, C, Gutsche, T, Hanhart, C, Hernández-Rey, JJ, Lourenço, C, Masoni, A, Mikhasenko, M, Mitchell, RE, Patrignani, C, Schwanda, C, Spanier, S, Venanzoni, G, Yuan, CZ, Agashe, K, Aielli, G, Allanach, BC, Alvarez-Muñiz, J, Antonelli, M, Aschenauer, EC, Asner, DM, Assamagan, K, Baer, H, Banerjee, Sw, Barnett, RM, Baudis, L, Bauer, CW, Beatty, JJ, Beringer, J, Bettini, A, Biebel, O, Black, KM, Blucher, E, Bonventre, R, Briere, RA, Buckley, A, Burkert, VD, Bychkov, MA, Cahn, RN, Cao, Z, Carena, M, Casarosa, G, Ceccucci, A, Cerri, A, Chivukula, RS, Cowan, G, Cranmer, K, Crede, V, Cremonesi, O, D’Ambrosio, G, Damour, T, de Florian, D, de Gouvêa, A, DeGrand, T, Demers, S, Demiragli, Z, Dobrescu, BA, D’Onofrio, M, Doser, M, Dreiner, HK, Eerola, P, Egede, U, Eidelman, S, El-Khadra, AX, Ellis, J, Eno, SC, Erler, J, Ezhela, VV, Fava, A, Fetscher, W, Fields, BD, Freitas, A, Gallagher, H, Gershon, T, Gershtein, Y, Gherghetta, T, Gonzalez-Garcia, MC, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Groom, DE, Grünewald, M, Gurtu, A, Haber, HE, Hamel, M, Hashimoto, S, Hayato, Y, Hebecker, A, Heinemeyer, S, Hikasa, K, Hisano, J, Höcker, A, Holder, J, Hsu, L, Huston, J, Hyodo, T, Ianni, Al, Kado, M, and Karliner, M

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences
Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,717 new measurements from 869 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Most of the 120 reviews are updated, including many that are heavily revised. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 97 review articles. Volume 2 consists of the Particle Listings and contains also 23 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print, as a web version optimized for use on phones, and as an Android app. The 2024 edition of the Review of Particle Physics should be cited as: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

Published
2024

3. Review of Particle Physics

Author

Workman, RL, Burkert, VD, Crede, V, Klempt, E, Thoma, U, Tiator, L, Agashe, K, Aielli, G, Allanach, BC, Amsler, C, Antonelli, M, Aschenauer, EC, Asner, DM, Baer, H, Banerjee, Sw, Barnett, RM, Baudis, L, Bauer, CW, Beatty, JJ, Belousov, VI, Beringer, J, Bettini, A, Biebel, O, Black, KM, Blucher, E, Bonventre, R, Bryzgalov, VV, Buchmuller, O, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chivukula, R Sekhar, Cowan, G, Cranmer, K, Cremonesi, O, D'Ambrosio, G, Damour, T, de Florian, D, de Gouvêa, A, DeGrand, T, de Jong, P, Demers, S, Dobrescu, BA, D'Onofrio, M, Doser, M, Dreiner, HK, Eerola, P, Egede, U, Eidelman, S, El-Khadra, AX, Ellis, J, Eno, SC, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Freitas, A, Gallagher, H, Gershtein, Y, Gherghetta, T, Gonzalez-Garcia, MC, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Groom, DE, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hamel, Matthieu, Hanhart, C, Hashimoto, S, Hayato, Y, Hebecker, A, Heinemeyer, S, Hernández-Rey, JJ, Hikasa, K, Hisano, J, Höcker, A, Holder, J, Hsu, L, Huston, J, Hyodo, T, Ianni, Al, Kado, M, Karliner, M, Katz, UF, Kenzie, M, Khoze, VA, Klein, SR, Krauss, F, Kreps, M, Križan, P, Krusche, B, Kwon, Y, Lahav, O, and Laiho, J

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Mathematical Sciences
Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on Machine Learning, and one on Spectroscopy of Light Meson Resonances. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 97 review articles. Volume 2 consists of the Particle Listings and contains also 23 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print, as a web version optimized for use on phones, and as an Android app.

Published
2022

4. Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target

Author

Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Berguño, D Bravo, Bronner, C, Bron, S, Bubak, A, Avanzini, M Buizza, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Van, NT Hong, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex
Abstract

The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of 14.9(16.4)×1020 protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the Pontecorvo-Maki-Nakagawa-Sakata parameters. For fits including a constraint on sin2θ13 from reactor data and assuming normal mass ordering T2K measures sin2θ23=0.53-0.04+0.03 and Δm322=(2.45±0.07)×10-3 eV2 c-4. The Bayesian analyses show a weak preference for normal mass ordering (89% posterior probability) and the upper sin2θ23 octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the 2σ level.

Published
2021

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

Author

Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Berguño, D Bravo, Bronner, C, Bron, S, Bubak, A, Avanzini, M Buizza, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Van, NT Hong, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Bioengineering
Abstract

This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-π+ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single π+ 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 that have a more realistic treatment of nuclear medium effects including the initial nuclear state and final-state interactions.

Published
2021

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

Author

Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Bravo Berguño, D, Bronner, C, Bron, S, Bubak, A, Buizza Avanzini, M, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Hong Van, NT, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B

Subjects
Bioengineering
Abstract

This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-π+ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single π+ 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 that have a more realistic treatment of nuclear medium effects including the initial nuclear state and final-state interactions.

Published
2021

7. Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target

Author

Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Bravo Berguño, D, Bronner, C, Bron, S, Bubak, A, Buizza Avanzini, M, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Hong Van, NT, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B

Subjects
hep-ex
Abstract

The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of 14.9(16.4)×1020 protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the Pontecorvo-Maki-Nakagawa-Sakata parameters. For fits including a constraint on sin2θ13 from reactor data and assuming normal mass ordering T2K measures sin2θ23=0.53-0.04+0.03 and Δm322=(2.45±0.07)×10-3 eV2 c-4. The Bayesian analyses show a weak preference for normal mass ordering (89% posterior probability) and the upper sin2θ23 octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the 2σ level.

Published
2021

8. Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande

Author

Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Imaizumi, S, Ito, H, Kameda, J, Kataoka, Y, Miura, M, Moriyama, S, Nagao, Y, Nakahata, M, Nakajima, Y, 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, Yano, T, Akutsu, R, Han, S, Kajita, T, Okumura, K, Tashiro, T, Wang, R, Xia, J, Bravo-Berguño, D, Labarga, L, Marti, Ll, Zaldivar, B, Blaszczyk, FDM, Kearns, E, Gustafson, JD, Raaf, JL, Stone, JL, Wan, L, Wester, T, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Smy, MB, Sobel, HW, Takhistov, V, Weatherly, P, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Coffani, A, Drapier, O, Hedri, S El, Giampaolo, A, Gonin, M, Mueller, Th A, Paganini, P, Quilain, B, Ishizuka, T, Nakamura, T, Jang, JS, Learned, JG, Anthony, LHV, Sztuc, AA, Uchida, Y, Berardi, V, Catanesi, MG, Radicioni, E, Calabria, NF, Machado, LN, De Rosa, G, Collazuol, G, Iacob, F, Lamoureux, M, Ospina, N, Ludovici, L, Nishimura, Y, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Kobayashi, T, Matsubara, T, Nakadaira, T, Jakkapu, M, Nakamura, K, Oyama, Y, Sakashita, K, and Sekiguchi, T

Subjects
Nuclear and Plasma Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

As a baryon number violating process with ΔB=2, neutron-antineutron oscillation (n→n¯) provides a unique test of baryon number conservation. We have performed a search for n→n¯ oscillation with bound neutrons in Super-Kamiokande, with the full dataset from its first four run periods, representing an exposure of 0.37 Mton-years. The search used a multivariate analysis trained on simulated n→n¯ events and atmospheric neutrino backgrounds and resulted in 11 candidate events with an expected background of 9.3 events. In the absence of statistically significant excess, we derived a lower limit on n¯ appearance lifetime in O16 nuclei of 3.6×1032 years and on the neutron-antineutron oscillation time of τn→n¯>4.7×108 s at 90% C.L.

Published
2021

9. Search for proton decay via p→e+π0 and p→μ+π0 with an enlarged fiducial volume in Super-Kamiokande I-IV

Author

Takenaka, A, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Imaizumi, S, Ito, H, Kameda, J, Kataoka, Y, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Mochizuki, T, Nagao, Y, Nakahata, M, Nakajima, Y, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Suzuki, Y, Takeda, A, Takemoto, Y, Tanaka, H, Yano, T, Akutsu, R, Han, S, Kajita, T, Okumura, K, Tashiro, T, Wang, R, Xia, J, Bravo-Berguño, D, Labarga, L, Fernandez, P, Zaldivar, B, Blaszczyk, FDM, Kearns, E, Raaf, JL, Stone, JL, Wan, L, Wester, T, Pointon, BW, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Smy, MB, Sobel, HW, Takhistov, V, Weatherly, P, Ganezer, KS, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Coffani, A, Drapier, O, Hedri, S El, Giampaolo, A, Gonin, M, Mueller, Th A, Paganini, P, Quilain, B, Ishizuka, T, Nakamura, T, Jang, JS, Learned, JG, Matsuno, S, Anthony, LHV, Litchfield, RP, Sztuc, AA, Uchida, Y, Berardi, V, Catanesi, MG, Radicioni, E, Calabria, NF, Machado, LN, De Rosa, G, Collazuol, G, Iacob, F, Lamoureux, M, Ospina, N, Ludovici, L, Nishimura, Y, Cao, S, Friend, M, Hasegawa, T, Ishida, T, and Jakkapu, M

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We have searched for proton decay via p→e+π0 and p→μ+π0 modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton·years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the Super-Kamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton·years of data, including 78 kton·years of additional fiducial volume data, has been newly analyzed. No candidates have been found for p→e+π0 and one candidate remains for p→μ+π0 in the conventional 22.5 kton fiducial volume and it is consistent with the atmospheric neutrino background prediction. We set lower limits on the partial lifetime for each of these modes: τ/B(p→e+π0)>2.4×1034 years and τ/B(p→μ+π0)>1.6×1034 years at 90% confidence level.

Published
2020

10. Indirect search for dark matter from the Galactic Center and halo with the Super-Kamiokande detector

Author

Abe, K, Bronner, C, Haga, Y, Hayato, Y, Ikeda, M, Imaizumi, S, Ito, H, Iyogi, K, Kameda, J, Kataoka, Y, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Mochizuki, T, Nagao, Y, Nakahata, M, Nakajima, Y, Nakajima, T, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Tasaka, S, Tomura, T, Ueno, K, Yano, T, Yokozawa, T, Akutsu, R, Han, S, Irvine, T, Kajita, T, Kametani, I, Lee, KP, McLachlan, T, Okumura, K, Richard, E, Tashiro, T, Wang, R, Xia, J, Bravo-Berguño, D, Labarga, L, Fernandez, P, Blaszczyk, FDM, Gustafson, J, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Sussman, S, Wan, L, Wester, T, Berkman, S, Tobayama, S, Bian, J, Carminati, G, Elnimr, M, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Renshaw, A, Smy, MB, Sobel, HW, Takhistov, V, Weatherly, P, Hartfiel, BL, Hill, J, Keig, WE, Hong, N, Kim, JY, Lim, IT, Park, RG, Akiri, T, Bodur, B, Himmel, A, Li, Z, O’Sullivan, E, Scholberg, K, Walter, CW, Wongjirad, T, Coffani, A, Drapier, O, Hedri, S El, Giampaolo, A, Gonin, M, Imber, J, Mueller, Th A, Paganini, P, Quilain, B, and Ishizuka, T

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We present a search for an excess of neutrino interactions due to dark matter in the form of weakly interacting massive particles (WIMPs) annihilating in the Galactic center or halo based on the data set of Super-Kamiokande-I, -II, -III and -IV taken from 1996 to 2016. We model the neutrino flux, energy, and flavor distributions assuming WIMP self-annihilation is dominant to νν¯, μ+μ-, bb¯, or W+W-. The excess is in comparison to atmospheric neutrino interactions which are modeled in detail and fit to data. Limits on the self-annihilation cross section σ are derived for WIMP masses in the range 1 GeV to 10 TeV, reaching as low as 9.6×10-23 cm3 s-1 for 5 GeV WIMPs in bb¯ mode and 1.2×10-24 cm3 s-1 for 1 GeV WIMPs in νν¯ mode. The obtained sensitivity of the Super-Kamiokande detector to WIMP masses below several tens of GeV is the best among similar indirect searches to date.

Published
2020

11. Review of Particle Physics

Author

Zyla, PA, Barnett, RM, Beringer, J, Dahl, O, Dwyer, DA, Groom, DE, Lin, C-J, Lugovsky, KS, Pianori, E, Robinson, DJ, Wohl, CG, Yao, W-M, Agashe, K, Aielli, G, Allanach, BC, Amsler, C, Antonelli, M, Aschenauer, EC, Asner, DM, Baer, H, Banerjee, Sw, Baudis, L, Bauer, CW, Beatty, JJ, Belousov, VI, Bethke, S, Bettini, A, Biebel, O, Black, KM, Blucher, E, Buchmuller, O, Burkert, V, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chivukula, R Sekhar, Cowan, G, D'Ambrosio, G, Damour, T, de Florian, D, de Gouvêa, A, DeGrand, T, de Jong, P, Dissertori, G, Dobrescu, BA, D'Onofrio, M, Doser, M, Drees, M, Dreiner, HK, Eerola, P, Egede, U, Eidelman, S, Ellis, J, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, H-J, Gerbier, G, Gershon, T, Gershtein, Y, Gherghetta, T, Godizov, AA, Gonzalez-Garcia, MC, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hanhart, C, Hashimoto, S, Hayato, Y, Hebecker, A, Heinemeyer, S, Heltsley, B, Hernández-Rey, JJ, Hikasa, K, Hisano, J, Höcker, A, Holder, J, Holtkamp, A, Huston, J, Hyodo, T, Johnson, KF, Kado, M, Karliner, M, Katz, UF, Kenzie, M, Khoze, VA, and Klein, SR

Subjects
Mathematical Sciences, Physical Sciences
Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,324 new measurements from 878 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on High Energy Soft QCD and Diffraction and one on the Determination of CKM Angles from B Hadrons. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 98 review articles. Volume 2 consists of the Particle Listings and contains also 22 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print and as a web version optimized for use on phones as well as an Android app.

Published
2020

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

Author

Tanaka, M, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Imaizumi, S, Ito, H, Kameda, J, Kataoka, Y, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Mochizuki, T, Nakahata, M, Nakajima, Y, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Yano, T, Akutsu, R, Kajita, T, Okumura, K, Wang, R, Xia, J, Bravo-Berguño, D, Labarga, L, Fernandez, P, Blaszczyk, FDM, Kearns, E, Raaf, JL, Stone, JL, Wan, L, Wester, T, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Smy, MB, Sobel, HW, Takhistov, V, Weatherly, P, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Coffani, A, Drapier, O, Hedri, S El, Gonin, M, Mueller, Th A, Paganini, P, Ishizuka, T, Nakamura, T, Jang, JS, Learned, JG, Matsuno, S, Litchfield, RP, Sztuc, AA, Uchida, Y, Berardi, V, Catanesi, MG, Radicioni, E, Calabria, NF, De Rosa, G, Collazuol, G, Iacob, F, Ludovici, L, Nishimura, Y, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Hasegawa, M, Isobe, Y, Miyabe, H, Nakano, Y, Shiozawa, T, Sugimoto, T, and Suzuki, AT

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

A search for proton decay into three charged leptons has been performed by using 0.37 Mton·years of data collected in Super-Kamiokande. All possible combinations of electrons, muons, and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between 9.2×1033 and 3.4×1034 years at 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the p→μ-e+e+ mode.

Published
2020

13. Review of particle physics

Author

Zyla, PA, Barnett, RM, Beringer, J, Dahl, O, Dwyer, DA, Groom, DE, Lin, CJ, Lugovsky, KS, Pianori, E, Robinson, DJ, Wohl, CG, Yao, WM, Agashe, K, Aielli, G, Allanach, BC, Amsler, C, Antonelli, M, Aschenauer, EC, Asner, DM, Baer, H, Banerjee, S, Baudis, L, Bauer, CW, Beatty, JJ, Belousov, VI, Bethke, S, Bettini, A, Biebel, O, Black, KM, Blucher, E, Buchmuller, O, Burkert, V, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Sekhar Chivukula, R, Cowan, G, D'Ambrosio, G, Damour, T, de Florian, D, de Gouvêa, A, DeGrand, T, de Jong, P, Dissertori, G, Dobrescu, BA, D'Onofrio, M, Doser, M, Drees, M, Dreiner, HK, Eerola, P, Egede, U, Eidelman, S, Ellis, J, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, HJ, Gerbier, G, Gershon, T, Gershtein, Y, Gherghetta, T, Godizov, AA, Gonzalez-Garcia, MC, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hanhart, C, Hashimoto, S, Hayato, Y, Hebecker, A, Heinemeyer, S, Heltsley, B, Hernández-Rey, JJ, Hikasa, K, Hisano, J, Höcker, A, Holder, J, Holtkamp, A, Huston, J, Hyodo, T, Johnson, KF, Kado, M, Karliner, M, Katz, UF, Kenzie, M, Khoze, VA, and Klein, SR

Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,324 new measurements from 878 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on High Energy Soft QCD and Diffraction and one on the Determination of CKM Angles from B Hadrons. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 98 review articles. Volume 2 consists of the Particle Listings and contains also 22 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print and as a web version optimized for use on phones as well as an Android app.

Published
2020

14. Search for Astronomical Neutrinos from Blazar TXS 0506+056 in Super-Kamiokande

Author

Hagiwara, K, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Ito, H, Kameda, J, Kataoka, Y, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Mochizuki, T, Nakahata, M, Nakajima, Y, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Yano, T, Akutsu, R, Kajita, T, Okumura, K, Wang, R, Xia, J, Bravo-Berguño, D, Labarga, L, Fernandez, P, Blaszczyk, FDM, Kearns, E, Raaf, JL, Stone, JL, Wan, L, Wester, T, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Smy, MB, Sobel, HW, Takhistov, V, Weatherly, P, Ganezer, KS, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Coffani, A, Drapier, O, Gonin, M, Mueller, Th A, Paganini, P, Ishizuka, T, Nakamura, T, Jang, JS, Learned, JG, Matsuno, S, Litchfield, RP, Sztuc, AA, Uchida, Y, Berardi, V, Calabria, NF, Catanesi, MG, Radicioni, E, De Rosa, G, Collazuol, G, Iacob, F, Ludovici, L, Nishimura, Y, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Hasegawa, M, Isobe, Y, Miyabe, H, Nakano, Y, Shiozawa, T, Sugimoto, T, Suzuki, AT, and Takeuchi, Y

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, astro-ph.HE, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Space sciences
Abstract

We report a search for astronomical neutrinos in the energy region from several GeV to TeV in the direction of the blazar TXS 0506+056 using the Super-Kamiokande detector following the detection of a 100 TeV neutrinos from the same location by the IceCube collaboration. Using Super-Kamiokande neutrino data across several data samples observed from 1996 April to 2018 February we have searched for both a total excess above known backgrounds across the entire period as well as localized excesses on smaller timescales in that interval. No significant excess nor significant variation in the observed event rate are found in the blazar direction. Upper limits are placed on the electron-and muon-neutrino fluxes at the 90% confidence level as 6.0 × 10-7 and 4.5 × 10-7-9.3 × 10-10 [erg cm-2 s-1], respectively.

Published
2019

15. Sensitivity of Super-Kamiokande with Gadolinium to Low Energy Antineutrinos from Pre-supernova Emission

Author

Simpson, C, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Ito, H, Iyogi, K, Kameda, J, Kataoka, Y, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Mochizuki, T, Nakahata, M, Nakajima, Y, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Yano, T, Akutsu, R, Kajita, T, Okumura, K, Wang, R, Xia, J, Bravo-Berguño, D, Labarga, L, Fernandez, P, Blaszczyk, FDM, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Wan, L, Wester, T, Sussman, S, Berkman, S, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Smy, MB, Sobel, HW, Takhistov, V, Weatherly, P, Ganezer, KS, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Coffani, A, Drapier, O, Gonin, M, Imber, J, Mueller, Th A, Paganini, P, Ishizuka, T, Nakamura, T, Jang, JS, Choi, K, Learned, JG, Matsuno, S, Litchfield, RP, Sztuc, AA, Uchida, Y, Wascko, MO, Berardi, V, Calabria, NF, Catanesi, MG, Intonti, RA, Radicioni, E, De Rosa, G, Collazuol, G, Iacob, F, Ludovici, L, Nishimura, Y, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, and Tsukamoto, T

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Neutrino astronomy, Supernova neutrinos, Particle astrophysics, Silicon burning, astro-ph.HE, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics, Space sciences
Abstract

Supernova detection is a major objective of the Super-Kamiokande (SK) experiment. In the next stage of SK (SK-Gd), gadolinium (Gd) sulfate will be added to the detector, which will improve the ability of the detector to identify neutrons. A core-collapse supernova (CCSN) will be preceded by an increasing flux of neutrinos and antineutrinos, from thermal and weak nuclear processes in the star, over a timescale of hours; some of which may be detected at SK-Gd. This could provide an early warning of an imminent CCSN, hours earlier than the detection of the neutrinos from core collapse. Electron antineutrino detection will rely on inverse beta decay events below the usual analysis energy threshold of SK, so Gd loading is vital to reduce backgrounds while maximizing detection efficiency. Assuming normal neutrino mass ordering, more than 200 events could be detected in the final 12 hr before core collapse for a 15-25 solar mass star at around 200 pc, which is representative of the nearest red supergiant to Earth, α-Ori (Betelgeuse). At a statistical false alarm rate of 1 per century, detection could be up to 10 hr before core collapse, and a pre-supernova star could be detected by SK-Gd up to 600 pc away. A pre-supernova alert could be provided to the astrophysics community following gadolinium loading.

Published
2019

16. Atmospheric neutrino oscillation analysis with improved event reconstruction in Super-Kamiokande IV

Author

Jiang, M, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kato, Y, Kishimoto, Y, Marti, LL, Miura, M, Moriyama, S, Mochizuki, T, Nakahata, M, Nakajima, Y, Nakano, Y, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Yano, T, Akutsu, R, Kajita, T, Nishimura, Y, Okumura, K, Wang, R, Xia, J, Labarga, L, Fernandez, P, Blaszczyk, FDM, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sussman, S, Berkman, S, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Weatherly, P, Smy, MB, Sobel, HW, Takhistov, V, Ganezer, KS, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Gonin, M, Imber, J, Mueller, Th A, Ishizuka, T, Nakamura, T, Jang, JS, Choi, K, Learned, JG, Matsuno, S, Litchfield, RP, Uchida, Y, Wascko, MO, Calabria, NF, Catanesi, MG, Intonti, RA, Radicioni, E, De Rosa, G, Ali, A, Collazuol, G, Iacob, F, Ludovici, L, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Abe, KE, Hasegawa, M, Isobe, Y, Miyabe, H, Sugimoto, T, Suzuki, AT, Takeuchi, Y, and Ashida, Y

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Mathematical Sciences
Abstract

A new event reconstruction algorithm based on a maximum likelihood method has been developed for Super-Kamiokande. Its improved kinematic and particle identification capabilities enable the analysis of atmospheric neutrino data in a detector volume 32% larger than previous analyses and increase the sensitivity to the neutrino mass hierarchy.Analysis of a 253.9 kton•year exposure of the Super-Kamiokande IV atmospheric neutrino data has yielded a weak preference for the normal hierarchy, disfavoring the inverted hierarchy at 74% assuming oscillations at the best fit of the analysis.

Published
2019

17. Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos at Super-Kamiokande

Author

Wan, L, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Mochizuki, T, Nakahata, M, Nakajima, Y, Nakano, Y, Nakayama, S, Okada, T, Okamoto, K, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Yano, T, Akutsu, R, Kajita, T, Nishimura, Y, Okumura, K, Wang, R, Xia, J, Labarga, L, Fernandez, P, Blaszczyk, FDM, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sussman, S, Berkman, S, Bian, J, Griskevich, NJ, Kropp, WR, Locke, S, Mine, S, Weatherly, P, Smy, MB, Sobel, HW, Takhistov, V, Ganezer, KS, Hill, J, Kim, JY, Lim, IT, Park, RG, Bodur, B, Scholberg, K, Walter, CW, Gonin, M, Imber, J, Mueller, Th A, Ishizuka, T, Nakamura, T, Jang, JS, Choi, K, Learned, JG, Matsuno, S, Litchfield, RP, Uchida, Y, Wascko, MO, Calabria, NF, Catanesi, MG, Intonti, RA, Radicioni, E, De Rosa, G, Ali, A, Collazuol, G, Iacob, F, Ludovici, L, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Abe, KE, Hasegawa, M, Isobe, Y, Miyabe, H, Sugimoto, T, Suzuki, AT, Takeuchi, Y, and Ashida, Y

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detectors. The NC channel is dominated by neutrino quasielastic (NCQE) scattering off nucleons inside O16 nuclei. In this paper we report the first measurement of NCQE cross section using atmospheric neutrinos at Super-Kamiokande (SK). The measurement used 2,778 live days of SK-IV data with a fiducial volume of 22.5 kiloton water. Within the visible energy window of 7.5-29.5 MeV, we observed 117 events compared to the expected 71.9 NCQE signal and 53.1 background events. Weighted by the atmospheric neutrino spectrum from 160 MeV to 10 GeV, the flux averaged NCQE cross section is measured to be (1.01±0.17(stat.)-0.30+0.78(sys.))×10-38 cm2.

Published
2019

18. Review of Particle Physics*

Author

Tanabashi, M, Hagiwara, K, Hikasa, K, Nakamura, K, Sumino, Y, Takahashi, F, Tanaka, J, Agashe, K, Aielli, G, Amsler, C, Antonelli, M, Asner, DM, Baer, H, Banerjee, Sw, Barnett, RM, Basaglia, T, Bauer, CW, Beatty, JJ, Belousov, VI, Beringer, J, Bethke, S, Bettini, A, Bichsel, H, Biebel, O, Black, KM, Blucher, E, Buchmuller, O, Burkert, V, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chen, M-C, Chivukula, RS, Cowan, G, Dahl, O, D’Ambrosio, G, Damour, T, de Florian, D, de Gouvêa, A, DeGrand, T, de Jong, P, Dissertori, G, Dobrescu, BA, D’Onofrio, M, Doser, M, Drees, M, Dreiner, HK, Dwyer, DA, Eerola, P, Eidelman, S, Ellis, J, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Firestone, R, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, H-J, Gerbier, G, Gershon, T, Gershtein, Y, Gherghetta, T, Godizov, AA, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Groom, DE, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hanhart, C, Hashimoto, S, Hayato, Y, Hayes, KG, Hebecker, A, Heinemeyer, S, Heltsley, B, Hernández-Rey, JJ, Hisano, J, Höcker, A, Holder, J, Holtkamp, A, Hyodo, T, Irwin, KD, Johnson, KF, Kado, M, Karliner, M, Katz, UF, Klein, SR, Klempt, E, Kowalewski, RV, and Krauss, F

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences
Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavily revised, including a new review on Neutrinos in Cosmology.Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tables and all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of the Listings are now included in volume 1.The complete Review (both volumes) is published online on the website of the Particle Data Group (http://pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is also available.The 2018 edition of the Review of Particle Physics should be cited as: M. Tanabashi (Particle Data Group), Phys. Rev. D 98, 030001 (2018).

Published
2018

19. Review of Particle Physics

Author

Tanabashi, M, Hagiwara, K, Hikasa, K, Nakamura, K, Sumino, Y, Takahashi, F, Tanaka, J, Agashe, K, Aielli, G, Amsler, C, Antonelli, M, Asner, DM, Baer, H, Banerjee, S, Barnett, RM, Basaglia, T, Bauer, CW, Beatty, JJ, Belousov, VI, Beringer, J, Bethke, S, Bettini, A, Bichsel, H, Biebel, O, Black, KM, Blucher, E, Buchmuller, O, Burkert, V, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chen, MC, Chivukula, RS, Cowan, G, Dahl, O, D'Ambrosio, G, Damour, T, De Florian, D, De Gouvêa, A, Degrand, T, De Jong, P, Dissertori, G, Dobrescu, BA, D'Onofrio, M, Doser, M, Drees, M, Dreiner, HK, Dwyer, DA, Eerola, P, Eidelman, S, Ellis, J, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Firestone, R, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, HJ, Gerbier, G, Gershon, T, Gershtein, Y, Gherghetta, T, Godizov, AA, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Groom, DE, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hanhart, C, Hashimoto, S, Hayato, Y, Hayes, KG, Hebecker, A, Heinemeyer, S, Heltsley, B, Hernández-Rey, JJ, Hisano, J, Höcker, A, Holder, J, Holtkamp, A, Hyodo, T, Irwin, KD, Johnson, KF, Kado, M, Karliner, M, Katz, UF, Klein, SR, Klempt, E, Kowalewski, RV, and Krauss, F

Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavily revised, including a new review on Neutrinos in Cosmology.Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tables and all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of the Listings are now included in volume 1.The complete Review (both volumes) is published online on the website of the Particle Data Group (http://pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is also available.The 2018 edition of the Review of Particle Physics should be cited as: M. Tanabashi (Particle Data Group), Phys. Rev. D 98, 030001 (2018).

Published
2018

20. Review of particle physics

Author

Patrignani, C, Agashe, K, Aielli, G, Amsler, C, Antonelli, M, Asner, DM, Baer, H, Banerjee, S, Barnett, RM, Basaglia, T, Bauer, CW, Beatty, JJ, Belousov, VI, Beringer, J, Bethke, S, Bichsel, H, Biebel, O, Blucher, E, Brooijmans, G, Buchmueller, O, Burkert, V, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chen, MC, Chivukula, RS, Copic, K, Cowan, G, Dahl, O, D'Ambrosio, G, Damour, T, De Florian, D, De Gouvêa, A, DeGrand, T, De Jong, P, Dissertori, G, Dobrescu, BA, D'Onofrio, M, Doser, M, Drees, M, Dreiner, HK, Dwyer, DA, Eerola, P, Eidelman, S, Ellis, J, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, HJ, Gerbier, G, Gershon, T, Gherghetta, T, Godizov, AA, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Groom, DE, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hagiwara, K, Hanhart, C, Hashimoto, S, Hayato, Y, Hayes, KG, Hebecker, A, Heltsley, B, Hernández-Rey, JJ, Hikasa, K, Hisano, J, Höcker, A, Holder, J, Holtkamp, A, Huston, J, Hyodo, T, Irwin, K, Jackson, JD, Johnson, KF, Kado, M, Karliner, M, Katz, UF, Klein, SR, Klempt, E, Kowalewski, RV, Krauss, F, Kreps, M, Krusche, B, Kuyanov, YV, Kwon, Y, and Lahav, O

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,062 new measurements from 721 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 117 reviews are many that are new or heavily revised, including those on Pentaquarks and Inflation. The complete Review is published online in a journal and on the website of the Particle Data Group (http://pdg.lbl.gov). The printed PDG Book contains the Summary Tables and all review articles but no longer includes the detailed tables from the Particle Listings. A Booklet with the Summary Tables and abbreviated versions of some of the review articles is also available.

Published
2016

21. Search for n-n ¯ oscillation in Super-Kamiokande SEARCH FOR n-n ¯ OSCILLATION IN SUPER-⋯ K. ABE et al.

Author

Abe, K, Hayato, Y, Iida, T, Ishihara, K, Kameda, J, Koshio, Y, Minamino, A, Mitsuda, C, Miura, M, Moriyama, S, Nakahata, M, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takeuchi, Y, Ueshima, K, Watanabe, H, Higuchi, I, Ishihara, C, Ishitsuka, M, Kajita, T, Kaneyuki, K, Mitsuka, G, Nakayama, S, Nishino, H, Okumura, K, Saji, C, Takenaga, Y, Clark, S, Desai, S, Dufour, F, Herfurth, A, Kearns, E, Likhoded, S, Litos, M, Raaf, JL, Stone, JL, Sulak, LR, Wang, W, Goldhaber, M, Casper, D, Cravens, JP, Dunmore, J, Griskevich, J, Kropp, WR, Liu, DW, Mine, S, Regis, C, Smy, MB, Sobel, HW, Vagins, MR, Ganezer, KS, Hartfiel, B, Hill, J, Keig, WE, Jang, JS, Jeoung, IS, Kim, JY, Lim, IT, Scholberg, K, Tanimoto, N, Walter, CW, Wendell, R, Ellsworth, RW, Tasaka, S, Guillian, G, Learned, JG, Matsuno, S, Messier, MD, Ichikawa, AK, Ishida, T, Ishii, T, Iwashita, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Nitta, K, Oyama, Y, Suzuki, AT, Hasegawa, M, Maesaka, H, Nakaya, T, Sasaki, T, Sato, H, Tanaka, H, Yamamoto, S, Yokoyama, M, Haines, TJ, Dazeley, S, Hatakeyama, S, Svoboda, R, Sullivan, GW, Gran, R, Habig, A, Fukuda, Y, and Itow, Y

Subjects
hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

A search for neutron-antineutron (n-n¯) oscillation was undertaken in Super-Kamiokande using the 1489 live-day or 2.45×1034 neutron-year exposure data. This process violates both baryon and baryon minus lepton numbers by an absolute value of two units and is predicted by a large class of hypothetical models where the seesaw mechanism is incorporated to explain the observed tiny neutrino masses and the matter-antimatter asymmetry in the Universe. No evidence for n-n¯ oscillation was found; the lower limit of the lifetime for neutrons bound in O16, in an analysis that included all of the significant sources of experimental uncertainties, was determined to be 1.9×1032years at the 90% confidence level. The corresponding lower limit for the oscillation time of free neutrons was calculated to be 2.7×108s using a theoretical value of the nuclear suppression factor of 0.517×1023s-1 and its uncertainty.

Published
2015

22. Search for dinucleon decay into pions at Super-Kamiokande

Author

Gustafson, J, Abe, K, Haga, Y, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kishimoto, Y, Miura, M, Moriyama, S, Nakahata, M, Nakajima, T, Nakano, Y, Nakayama, S, Orii, A, Sekiya, H, Shiozawa, M, Takeda, A, Tanaka, H, Tomura, T, Wendell, RA, Irvine, T, Kajita, T, Kametani, I, Kaneyuki, K, Nishimura, Y, Richard, E, Okumura, K, Labarga, L, Fernandez, P, Berkman, S, Tanaka, HA, Tobayama, S, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Goldhaber, M, Carminati, G, Kropp, WR, Mine, S, Weatherly, P, Renshaw, A, Smy, MB, Sobel, HW, Takhistov, V, Ganezer, KS, Hartfiel, BL, Hill, J, Hong, N, Kim, JY, Lim, IT, Akiri, T, Himmel, A, Scholberg, K, Walter, CW, Wongjirad, T, Ishizuka, T, Tasaka, S, Jang, JS, Learned, JG, Matsuno, S, Smith, SN, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Takeuchi, Y, Yano, T, Hirota, S, Huang, K, Ieki, K, Kikawa, T, Minamino, A, Nakaya, T, Suzuki, K, Takahashi, S, Fukuda, Y, Choi, K, Itow, Y, Mitsuka, G, Suzuki, T, Mijakowski, P, Hignight, J, Imber, J, Jung, CK, Palomino, JL, Yanagisawa, C, Ishino, H, Kayano, T, Kibayashi, A, Koshio, Y, and Mori, T

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Super-Kamiokande Collaboration, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

A search for the dinucleon decay pp → K+ K+ has been performed using 91.6  kton·yr data from Super-Kamiokande-I. This decay provides a sensitive probe of the R-parity-violating parameter λ112''. A boosted decision tree analysis found no signal candidates in the data. The expected background was 0.28±0.19 atmospheric neutrino induced events and the estimated signal detection efficiency was 12.6%±3.2%. A lower limit of 1.7×10(32)  years has been placed on the partial lifetime of the decay O16 → C14K+ K+ at 90% C.L. A corresponding upper limit of 7.8×10(-9) has been placed on the parameter λ112''.

Published
2015

23. Search for n−n¯ oscillation in Super-Kamiokande

Author

Abe, K, Hayato, Y, Iida, T, Ishihara, K, Kameda, J, Koshio, Y, Minamino, A, Mitsuda, C, Miura, M, Moriyama, S, Nakahata, M, Obayashi, Y, Ogawa, H, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takeuchi, Y, Ueshima, K, Watanabe, H, Higuchi, I, Ishihara, C, Ishitsuka, M, Kajita, T, Kaneyuki, K, Mitsuka, G, Nakayama, S, Nishino, H, Okumura, K, Saji, C, Takenaga, Y, Clark, S, Desai, S, Dufour, F, Herfurth, A, Kearns, E, Likhoded, S, Litos, M, Raaf, JL, Stone, JL, Sulak, LR, Wang, W, Goldhaber, M, Casper, D, Cravens, JP, Dunmore, J, Griskevich, J, Kropp, WR, Liu, DW, Mine, S, Regis, C, Smy, MB, Sobel, HW, Vagins, MR, Ganezer, KS, Hartfiel, B, Hill, J, Keig, WE, Jang, JS, Jeoung, IS, Kim, JY, Lim, IT, Scholberg, K, Tanimoto, N, Walter, CW, Wendell, R, Ellsworth, RW, Tasaka, S, Guillian, G, Learned, JG, Matsuno, S, Messier, MD, Ichikawa, AK, Ishida, T, Ishii, T, Iwashita, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Nishikawa, K, Nitta, K, Oyama, Y, Suzuki, AT, Hasegawa, M, Maesaka, H, Nakaya, T, Sasaki, T, Sato, H, Tanaka, H, Yamamoto, S, Yokoyama, M, Haines, TJ, Dazeley, S, Hatakeyama, S, Svoboda, R, Sullivan, GW, Gran, R, Habig, A, Fukuda, Y, and Itow, Y

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

A search for neutron-antineutron (n-n¯) oscillation was undertaken in Super-Kamiokande using the 1489 live-day or 2.45×1034 neutron-year exposure data. This process violates both baryon and baryon minus lepton numbers by an absolute value of two units and is predicted by a large class of hypothetical models where the seesaw mechanism is incorporated to explain the observed tiny neutrino masses and the matter-antimatter asymmetry in the Universe. No evidence for n-n¯ oscillation was found; the lower limit of the lifetime for neutrons bound in O16, in an analysis that included all of the significant sources of experimental uncertainties, was determined to be 1.9×1032years at the 90% confidence level. The corresponding lower limit for the oscillation time of free neutrons was calculated to be 2.7×108s using a theoretical value of the nuclear suppression factor of 0.517×1023s-1 and its uncertainty.

Published
2015

24. Review of particle physics

Author

Olive, KA, Agashe, K, Amsler, C, Antonelli, M, Arguin, JF, Asner, DM, Baer, H, Band, HR, Barnett, RM, Basaglia, T, Bauer, CW, Beatty, JJ, Belousov, VL, Beringer, J, Bernardi, G, Bethke, S, Bichsel, H, Biebel, O, Blucher, E, Blusk, S, Brooijmans, G, Buchmueller, O, Burkert, V, Bychkov, MA, Cahn, RN, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chen, MC, Chivukula, RS, Copie, K, Cowan, G, Dahl, O, D'Ambrosio, G, Damour, T, De Florian, D, De Gouvéa, A, DeGrand, T, De Jong, P, Dissertori, G, Dobrescu, BA, Doser, M, Drees, M, Dreiner, HK, Edwards, DA, Eidelman, S, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Foster, B, Freitas, A, Gaisser, TK, Gallagher, H, Garren, L, Gerber, HJ, Gerbier, G, Gershon, T, Gherghetta, T, Golwala, S, Goodman, M, Grab, C, Gritsan, AV, Grojean, C, Groom, DE, Grünewald, M, Gurtu, A, Gutsche, T, Haber, HE, Hagiwara, K, Hanhart, C, Hashimoto, S, Hayato, Y, Hayes, KG, Heffner, M, Heltsley, B, Hernández-Rey, JJ, Hikasa, K, Höcker, A, Holder, J, Holtkamp, A, Huston, J, Jackson, JD, Johnson, KF, Junk, T, Kado, M, Karlen, D, Katz, UF, Klein, SR, Klempt, E, Kowalewski, RV, Krauss, F, Kreps, M, Krusche, B, Kuyanov, YV, Kwon, Y, Lahav, O, Laiho, J, and Langacker, P

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as heavy neutrinos, supersymmetric and technicolor particles, axions, dark photons, etc. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as Supersymmetry, Extra Dimensions, Particle Detectors, Probability, and Statistics. Among the 112 reviews are many that are new or heavily revised including those on: Dark Energy, Higgs Boson Physics, Electroweak Model, Neutrino Cross Section Measurements, Monte Carlo Neutrino Generators, Top Quark, Dark Matter, Dynamical Electroweak Symmetry Breaking, Accelerator Physics of Colliders, High-Energy Collider Parameters, Big Bang Nucleosynthesis, Astrophysical Constants and Cosmological Parameters. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http://pdg.Ibi.gov.

Published
2014

25. Recent Results from the T2K Experiment

Author

Abe, K, Abgrall, N, Aihara, H, Akiri, T, Andreopoulos, C, Aoki, S, Ariga, A, Ariga, T, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bass, M, Batkiewicz, M, Bay, F, Bentham, SW, Berardi, V, Berger, BE, Berkman, S, Bertram, I, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Buchanan, N, Calland, RG, Rodríguez, J Caravaca, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Christodoulou, G, Clifton, A, Coleman, J, Coleman, SJ, Collazuol, G, Connolly, K, Cremonesi, L, Curioni, A, Dabrowska, A, Danko, I, Das, R, Davis, S, de Perio, P, De Rosa, G, Dealtry, T, Dennis, SR, Densham, C, Di Lodovico, F, Di Luise, S, Drapier, O, Duboyski, T, Dufour, F, Dumarchez, J, Dytman, S, Dziewiecki, M, Emery, S, Ereditato, A, Escudero, L, Finch, AJ, Frank, E, Friend, M, Fujii, Y, Fukuda, Y, Furmanski, AP, Galymov, V, Gaudin, A, Giffin, S, Giganti, C, Gilje, K, Golan, T, Gomez-Cadenas, JJ, Gonin, M, Grant, N, Gudin, D, Hadley, DR, Haesler, A, Haigh, MD, Hamilton, P, Hansen, D, Hara, T, Hartz, M, Hasegawa, T, Hastings, NC, Hayato, Y, Hearty, C, Helmer, RL, Hierholzer, M, Hignight, J, Hillairet, A, Himmel, A, Hiraki, T, Hirota, S, and Holeczek, J

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Neutrino Oscillation, theta(13), Long Baseline, T2K, hep-ph
Abstract

The Tokai to Kamioka (T2K) experiment studies neutrino oscillations using a beam of muon neutrinos produced by an accelerator. The neutrinos travel from J-PARC on the east coast of Japan and are detected 295 kilometers further away in the Super-Kamiokande detector. A complex of near detectors located 280 meters away from the neutrino production target is used to better characterize the neutrino beam and reduce systematic uncertainties. The experiment aims at measuring electronic neutrino appearance (νμ→νe oscillation) to measure the neutrino mixing angle θ13, and muon neutrino disappearance to measure the neutrino mixing angle θ23 and mass splitting |δm322|. We report here electron neutrino appearance results using three years of data, recorded until the 2012 summer, as well as muon neutrino disappearance results based on the data coming from the first two years of the experiment. © 2013 Elsevier B.V.

Published
2014

26. Measurement of Neutrino Oscillation Parameters from Muon Neutrino Disappearance with an Off-Axis Beam

Author

Abe, K, Adam, J, Aihara, H, Akiri, T, Andreopoulos, C, Aoki, S, Ariga, A, Ariga, T, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bass, M, Batkiewicz, M, Bay, F, Bentham, SW, Berardi, V, Berger, BE, Berkman, S, Bertram, I, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Bordoni, S, Boyd, SB, Brailsford, D, Bravar, A, Bronner, C, Buchanan, N, Calland, RG, Rodríguez, J Caravaca, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Christodoulou, G, Clifton, A, Coleman, J, Coleman, SJ, Collazuol, G, Connolly, K, Cremonesi, L, Curioni, A, Dabrowska, A, Danko, I, Das, R, Davis, S, de Perio, P, De Rosa, G, Dealtry, T, Dennis, SR, Densham, C, Di Lodovico, F, Di Luise, S, Drapier, O, Duboyski, T, Duffy, K, Dufour, F, Dumarchez, J, Dytman, S, Dziewiecki, M, Emery, S, Ereditato, A, Escudero, L, Finch, AJ, Frank, E, Friend, M, Fujii, Y, Fukuda, Y, Furmanski, AP, Galymov, V, Gaudin, A, Giffin, S, Giganti, C, Gilje, K, Golan, T, Gomez-Cadenas, JJ, Gonin, M, Grant, N, Gudin, D, Hadley, DR, Haesler, A, Haigh, MD, Hamilton, P, Hansen, D, Hara, T, Hartz, M, Hasegawa, T, Hastings, NC, Hayato, Y, Hearty, C, Helmer, RL, Hierholzer, M, Hignight, J, Hillairet, A, Himmel, A, and Hiraki, T

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, T2K Collaboration, hep-ex, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01×10(20) protons on target. In the absence of neutrino oscillations, 205±17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin2(θ23)=0.514±0.082 and mass splitting |Δm(32)(2)|=2.44(-0.15)(+0.17)×10(-3) eV2/c4. Our result corresponds to the maximal oscillation disappearance probability.

Published
2013

27. Evidence of electron neutrino appearance in a muon neutrino beam

Author

Abe, K, Abgrall, N, Aihara, H, Akiri, T, Albert, JB, Andreopoulos, C, Aoki, S, Ariga, A, Ariga, T, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bass, M, Batkiewicz, M, Bay, F, Bentham, SW, Berardi, V, Berger, BE, Berkman, S, Bertram, I, Beznosko, D, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Boyd, S, Brailsford, D, Bravar, A, Bronner, C, Brook-Roberge, DG, Buchanan, N, Calland, RG, Caravaca Rodríguez, J, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Christodoulou, G, Clifton, A, Coleman, J, Coleman, SJ, Collazuol, G, Connolly, K, Cremonesi, L, Curioni, A, Dabrowska, A, Danko, I, Das, R, Davis, S, Day, M, De André, JPAM, De Perio, P, De Rosa, G, Dealtry, T, Dennis, S, Densham, C, Di Lodovico, F, Di Luise, S, Dobson, J, Drapier, O, Duboyski, T, Dufour, F, Dumarchez, J, Dytman, S, Dziewiecki, M, Dziomba, M, Emery, S, Ereditato, A, Escudero, L, Finch, AJ, Frank, E, Friend, M, Fujii, Y, Fukuda, Y, Furmanski, A, Galymov, V, Gaudin, A, Giffin, S, Giganti, C, Gilje, K, Golan, T, Gomez-Cadenas, JJ, Gonin, M, Grant, N, Gudin, D, Hadley, DR, Haesler, A, Haigh, MD, Hamilton, P, Hansen, D, Hara, T, Hartz, M, Hasegawa, T, Hastings, NC, Hayato, Y, Hearty, C, and Helmer, RL

Subjects
hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, |Δm322|≈2.4×10-3 eV2. An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3±0.4(syst) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 (3.1σ), and a fit assuming νμ→νe oscillations with sinâ¡22θ23=1, δCP=0 and |Δm322|=2.4×10-3 eV2 yields sinâ¡22θ13=0.088-0.039+0. 049(stat+syst). © 2013 American Physical Society.

Published
2013

28. Evidence of electron neutrino appearance in a muon neutrino beam

Author

Abe, K, Abgrall, N, Aihara, H, Akiri, T, Albert, JB, Andreopoulos, C, Aoki, S, Ariga, A, Ariga, T, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bass, M, Batkiewicz, M, Bay, F, Bentham, SW, Berardi, V, Berger, BE, Berkman, S, Bertram, I, Beznosko, D, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Boyd, S, Brailsford, D, Bravar, A, Bronner, C, Brook-Roberge, DG, Buchanan, N, Calland, RG, Rodríguez, J Caravaca, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Christodoulou, G, Clifton, A, Coleman, J, Coleman, SJ, Collazuol, G, Connolly, K, Cremonesi, L, Curioni, A, Dabrowska, A, Danko, I, Das, R, Davis, S, Day, M, de André, JPAM, de Perio, P, De Rosa, G, Dealtry, T, Dennis, S, Densham, C, Di Lodovico, F, Di Luise, S, Dobson, J, Drapier, O, Duboyski, T, Dufour, F, Dumarchez, J, Dytman, S, Dziewiecki, M, Dziomba, M, Emery, S, Ereditato, A, Escudero, L, Finch, AJ, Frank, E, Friend, M, Fujii, Y, Fukuda, Y, Furmanski, A, Galymov, V, Gaudin, A, Giffin, S, Giganti, C, Gilje, K, Golan, T, Gomez-Cadenas, JJ, Gonin, M, Grant, N, Gudin, D, Hadley, DR, Haesler, A, Haigh, MD, Hamilton, P, Hansen, D, Hara, T, Hartz, M, Hasegawa, T, Hastings, NC, Hayato, Y, Hearty, C, and Helmer, RL

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, |Δm322|≈2.4×10-3 eV2. An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3±0.4(syst) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 (3.1σ), and a fit assuming νμ→νe oscillations with sinâ¡22θ23=1, δCP=0 and |Δm322|=2.4×10-3 eV2 yields sinâ¡22θ13=0.088-0.039+0. 049(stat+syst). © 2013 American Physical Society.

Published
2013

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