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Book ; Online: Development of new radon monitoring systems in the Kamioka mine

Pronost, Guillaume / Ikeda, Motoyasu / Nakamura, Taku / Sekiya, Hiroyuki / Tasaka, Shigeki

2018

Abstract: Radioactivity from radon is a major threat for high-precision low energy physics experiments like the ones in the Kamioka Mine. We developed a new high sensitive radon monitoring system and conducted systematic radon concentration measurements for the ... ...

Abstract	Radioactivity from radon is a major threat for high-precision low energy physics experiments like the ones in the Kamioka Mine. We developed a new high sensitive radon monitoring system and conducted systematic radon concentration measurements for the first time in Kamioka. The system consists of portable radon detectors with a capacity of 1 L and new electronics based on Raspberry Pi. These radon detectors measure the radon in air with electro-static collection and a PIN photodiode. We measured the absolute humidity dependence of the 1-L radon detector for air to be $C_{F} (A_{H}) = (12.86 \pm 0.40) - (1.66 \pm 0.19) \sqrt{A_{H}}$ $\mathrm{(counts/day)/(Bq/m^3)}$. The background level of the 1-L radon detector is $0.65\pm0.15$ (stat.) count/day. This corresponds to a detection limit of $\sim0.4$ Bq/m$^3$ in a one-day measurement. Data was collected for a period of more than one year with twenty one 1-L radon detectors in the Kamioka mine. They indicate seasonal and day-night variations in radon concentration within the mine. These results also allow us to confirm the stability of the new Raspberry Pi electronics. Comment: 21 pages, 22 figures, to be published in PTEP Erratum on 2019/03/06: Figures 15 and 16 were corrected, this doesn't change our conclusions
Keywords	Physics - Instrumentation and Detectors
Subject code	333 ; 669
Publishing date	2018-07-29
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Antineutrino emission and gamma background characteristics from a thermal research reactor

Bui, V. M. / Giot, L. / Fallot, M. / Communeau, V. / Cormon, S. / Estienne, M. / Lenoir, M. / Peuvrel, N. / Shiba, T. / Cucoanes, A. S. / Elnimr, M. / Martino, J. / Onillon, A. / Porta, A. / Pronost, G. / Remoto, A. / Thiolliere, N. / Yermia, F. / Zakari-Issoufou, A. -A.

2016

Abstract: The detailed understanding of the antineutrino emission from research reactors is mandatory for any high sensitivity experiments either for fundamental or applied neutrino physics, as well as a good control of the gamma and neutron backgrounds induced by ...

Abstract	The detailed understanding of the antineutrino emission from research reactors is mandatory for any high sensitivity experiments either for fundamental or applied neutrino physics, as well as a good control of the gamma and neutron backgrounds induced by the reactor operation. In this article, the antineutrino emission associated to a thermal research reactor: the OSIRIS reactor located in Saclay, France, is computed in a first part. The calculation is performed with the summation method, which sums all the contributions of the beta decay branches of the fission products, coupled for the first time with a complete core model of the OSIRIS reactor core. The MCNP Utility for Reactor Evolution code was used, allowing to take into account the contributions of all beta decayers in-core. This calculation is representative of the isotopic contributions to the antineutrino flux which can be found at research reactors with a standard 19.75\% enrichment in $^{235}$U. In addition, the required off-equilibrium corrections to be applied to converted antineutrino energy spectra of uranium and plutonium isotopes are provided. In a second part, the gamma energy spectrum emitted at the core level is provided and could be used as an input in the simulation of any reactor antineutrino detector installed at such research facilities. Furthermore, a simulation of the core surrounded by the pool and the concrete shielding of the reactor has been developed in order to propagate the emitted gamma rays and neutrons from the core. The origin of these gamma rays and neutrons is discussed and the associated energy spectrum of the photons transported after the concrete walls is displayed. Comment: 14 pages, 11 figures, Data in Appendix A and B (13 pages)
Keywords	Nuclear Experiment ; High Energy Physics - Experiment ; Physics - Instrumentation and Detectors
Subject code	660
Publishing date	2016-02-24
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: New antineutrino energy spectra predictions from the summation of beta decay branches of the fission products.

Fallot, M / Cormon, S / Estienne, M / Algora, A / Bui, V M / Cucoanes, A / Elnimr, M / Giot, L / Jordan, D / Martino, J / Onillon, A / Porta, A / Pronost, G / Remoto, A / Taín, J L / Yermia, F / Zakari-Issoufou, A-A

Physical review letters

2012 Volume 109, Issue 20, Page(s) 202504

Abstract: In this Letter, we study the impact of the inclusion of the recently measured beta decay properties of the (102;104;105;106;107)Tc, (105)Mo, and (101)Nb nuclei in an updated calculation of the antineutrino energy spectra of the four fissible isotopes ( ... ...

Abstract	In this Letter, we study the impact of the inclusion of the recently measured beta decay properties of the (102;104;105;106;107)Tc, (105)Mo, and (101)Nb nuclei in an updated calculation of the antineutrino energy spectra of the four fissible isotopes (235,238)U and (239,241)Pu. These actinides are the main contributors to the fission processes in pressurized water reactors. The beta feeding probabilities of the above-mentioned Tc, Mo, and Nb isotopes have been found to play a major role in the γ component of the decay heat of (239)Pu, solving a large part of the γ discrepancy in the 4-3000 s range. They have been measured by using the total absorption technique, insensitive to the pandemonium effect. The calculations are performed by using the information available nowadays in the nuclear databases, summing all the contributions of the beta decay branches of the fission products. Our results provide a new prediction of the antineutrino energy spectra of (235)U, (239,241)Pu, and, in particular, (238)U for which no measurement has been published yet. We conclude that new total absorption technique measurements are mandatory to improve the reliability of the predicted spectra.
Language	English
Publishing date	2012-11-16
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.109.202504
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Article ; Online: Contribution of recently measured nuclear data to reactor antineutrino energy spectra predictions

Fallot M. / Cormon S. / Estienne M. / Algora A. / Bui V.M. / Cucoanes A. / Elnimr M. / Giot L. / Jordan D. / Martino J. / Onillon A. / Porta A. / Pronost G. / Remoto A. / Taín J.L. / Yermia F. / Zakari-Issoufou A.-A.

EPJ Web of Conferences, Vol 62, p

2013 Volume 07007

Abstract: This paper attempts to summarize the actual problematic of reactor antineutrino energy spectra in the frame of fundamental and applied neutrino physics. Nuclear physics is an important ingredient of reactor antineutrino experiments. These experiments are ...

Abstract	This paper attempts to summarize the actual problematic of reactor antineutrino energy spectra in the frame of fundamental and applied neutrino physics. Nuclear physics is an important ingredient of reactor antineutrino experiments. These experiments are motivated by neutrino oscillations, i.e. the measure of the θ13 mixing angle. In 2011, after a new computation of the reactor antineutrino energy spectra, based on the conversion of integral data of the beta spectra from 235U, and 239;241Pu, a deficit of reactor antineutrinos measured by short baseline experiments was pointed out. This is called the “reactor anomaly”, a new puzzle in the neutrino physics area. Since then, numerous new experimental neutrino projects have emerged. In parallel, computations of the antineutrino spectra independant from the ILL data would be desirable. One possibility is the use of the summation method, summing all the contributions of the fission product beta decay branches that can be found in nuclear databases. Studies have shown that in order to obtain reliable summation antineutrino energy spectra, new nuclear physics measurements of selected fission product beta decay properties are required. In these proceedings, we will present the computation methods of reactor antineutrino energy spectra and the impact of recent beta decay measurements on summation method spectra. The link of these nuclear physics studies with short baseline line oscillation search will be drawn and new neutrino physics projects at research reactors will be briefly presented.
Keywords	Physics ; QC1-999 ; Science ; Q ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
Subject code	660
Language	English
Publishing date	2013-12-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
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Article ; Online: Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande.

Abe, K / Hayato, Y / Hiraide, K / Ieki, K / Ikeda, M / Kameda, J / Kanemura, Y / Kaneshima, R / Kashiwagi, Y / Kataoka, Y / Miki, S / Mine, S / Miura, M / Moriyama, S / Nakano, Y / Nakahata, M / Nakayama, S / Noguchi, Y / Okamoto, K /

Sato, K / Sekiya, H / Shiba, H / Shimizu, K / 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 / Tomiya, T / Wang, X / Xia, J / Yoshida, S / Megias, G D / Fernandez, P / Labarga, L / Ospina, N / Zaldivar, B / Pointon, B W / Kearns, E / Raaf, J L / Wan, L / Wester, T / Bian, J / Griskevich, N J / Kropp, W R / Locke, S / Smy, M B / Sobel, H W / Takhistov, V / Yankelevich, A / Hill, J / Park, R G / Bodur, B / Scholberg, K / Walter, C W / Bernard, L / Coffani, A / Drapier, O / El Hedri, S / Giampaolo, A / Mueller, Th A / Santos, A D / Paganini, P / Quilain, B / Ishizuka, T / Nakamura, T / Jang, J S / Learned, J G / Choi, K / Cao, S / Anthony, L H V / Martin, D / Scott, M / Sztuc, A A / Uchida, Y / Berardi, V / Catanesi, M G / Radicioni, E / Calabria, N F / Machado, L N / De Rosa, G / Collazuol, G / Iacob, F / Lamoureux, M / Mattiazzi, M / Ludovici, L / Gonin, M / Pronost, G / Fujisawa, C / Maekawa, Y / Nishimura, Y / Friend, M / Hasegawa, T / Ishida, T / Kobayashi, T / Jakkapu, M / Matsubara, T / Nakadaira, T / Nakamura, K / Oyama, Y / Sakashita, K / Sekiguchi, T / Tsukamoto, T / Boschi, T / Di Lodovico, F / Gao, J / Goldsack, A / Katori, T / Migenda, J / Taani, M / Zsoldos, S / Kotsar, Y / Ozaki, H / Suzuki, A T / Takeuchi, Y / Bronner, C / Feng, J / Kikawa, T / Mori, M / Nakaya, T / Wendell, R A / Yasutome, K / Jenkins, S J / McCauley, N / Mehta, P / Tsui, K M / Fukuda, Y / Itow, Y / Menjo, H / Ninomiya, K / Lagoda, J / Lakshmi, S M / Mandal, M / Mijakowski, P / Prabhu, Y S / Zalipska, J / Jia, M / Jiang, J / Jung, C K / Wilking, M J / Yanagisawa, C / Harada, M / Ishino, H / Ito, S / Kitagawa, H / Koshio, Y / Nakanishi, F / Sakai, S / Barr, G / Barrow, D / Cook, L / Samani, S / Wark, D / Nova, F / Yang, J Y / Malek, M / McElwee, J M / Stone, O / Thiesse, M D / Thompson, L F / Okazawa, H / Kim, S B / Seo, J W / Yu, I / Ichikawa, A K / Nakamura, K D / Tairafune, S / Nishijima, K / Iwamoto, K / Nakagiri, K / Nakajima, Y / Taniuchi, N / Yokoyama, M / Martens, K / de Perio, P / Vagins, M R / Kuze, M / Izumiyama, S / Inomoto, M / Ishitsuka, M / Ito, H / Kinoshita, T / Matsumoto, R / 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 / Marti, Ll / Minamino, A / Pintaudi, G / Sano, S / Suzuki, S / Wada, K

Physical review letters

2023 Volume 130, Issue 3, Page(s) 31802

Abstract: We report a search for cosmic-ray boosted dark matter with protons using the 0.37 megaton×years data collected at Super-Kamiokande experiment during the 1996-2018 period (SKI-IV phase). We searched for an excess of proton recoils above the atmospheric ... ...

Abstract	We report a search for cosmic-ray boosted dark matter with protons using the 0.37 megaton×years data collected at Super-Kamiokande experiment during the 1996-2018 period (SKI-IV phase). We searched for an excess of proton recoils above the atmospheric neutrino background from the vicinity of the Galactic Center. No such excess is observed, and limits are calculated for two reference models of dark matter with either a constant interaction cross section or through a scalar mediator. This is the first experimental search for boosted dark matter with hadrons using directional information. The results present the most stringent limits on cosmic-ray boosted dark matter and exclude the dark matter-nucleon elastic scattering cross section between 10^{-33}cm^{2} and 10^{-27}cm^{2} for dark matter mass from 1 MeV/c^{2} to 300 MeV/c^{2}.
Language	English
Publishing date	2023-02-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.130.031802
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Article ; Online: Erratum: Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande [Phys. Rev. Lett. 130, 031802 (2023)].

Physical review letters

2023 Volume 131, Issue 15, Page(s) 159903

Abstract: This corrects the article DOI: 10.1103/PhysRevLett.130.031802. ...

Abstract	This corrects the article DOI: 10.1103/PhysRevLett.130.031802.
Language	English
Publishing date	2023-10-26
Publishing country	United States
Document type	Published Erratum
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.159903
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Reactor Rate Modulation oscillation analysis with two detectors in Double Chooz

Double Chooz Collaboration / Abrahão, T. / Almazan, H. / Anjos, J. C. dos / Appel, S. / Bekman, I. / Bezerra, T. J. C. / Bezrukov, L. / Blucher, E. / Brugière, T. / Buck, C. / Busenitz, J. / Cabrera, A. / Cerrada, M. / Chauveau, E. / Chimenti, P. / Dawson, J. V. / Djurcic, Z. / Etenko, A. /

Furuta, H. / Gil-Botella, I. / Gonzalez, L. F. G. / Goodman, M. C. / Hara, T. / Hellwig, D. / Hourlier, A. / Ishitsuka, M. / Jochum, J. / Jollet, C. / Kale, K. / Kaneda, M. / Kawasaki, T. / Kemp, E. / de Kerret, H. / Kryn, D. / Kuze, M. / Lachenmaier, T. / Lane, C. E. / Lasserre, T. / Lastoria, C. / Lhuillier, D. / Lima Jr, H. P. / Lindner, M. / López-Castaño, J. M. / LoSecco, J. M. / Lubsandorzhiev, B. / Maeda, J. / Mariani, C. / Maricic, J. / Martino, J. / Matsubara, T. / Mention, G. / Meregaglia, A. / Miletic, T. / Milincic, R. / Minotti, A. / Navas-Nicolás, D. / Novella, P. / Oberauer, L. / Obolensky, M. / Onillon, A. / Oralbaev, A. / Palomares, C. / Pepe, I. M. / Pronost, G. / Reichenbacher, J. / Reinhold, B. / Schönert, S. / Schoppmann, S. / Sharankova, R. / Sibille, V. / Sinev, V. / Skorokhvatov, M. / Soldin, P. / Stahl, A. / Stancu, I. / Stokes, L. F. F. / Suekane, F. / Sukhotin, S. / Sumiyoshi, T. / Sun, Y. / Viaud, B. / Vivier, M. / Wagner, S. / Wiebusch, C. / Yang, G. / Yermia, F.

2020

Abstract: A $\theta_{13}$ oscillation analysis based on the observed antineutrino rates at the Double Chooz far and near detectors for different reactor power conditions is presented. This approach provides a so far unique simultaneous determination of $\theta_{13} ...

Abstract	A $\theta_{13}$ oscillation analysis based on the observed antineutrino rates at the Double Chooz far and near detectors for different reactor power conditions is presented. This approach provides a so far unique simultaneous determination of $\theta_{13}$ and the total background rates without relying on any assumptions on the specific background contributions. The analysis comprises 865 days of data collected in both detectors with at least one reactor in operation. The oscillation results are enhanced by the use of 24.06 days (12.74 days) of reactor-off data in the far (near) detector. The analysis considers the \nue interactions up to a visible energy of 8.5 MeV, using the events at higher energies to build a cosmogenic background model considering fast-neutrons interactions and $^{9}$Li decays. The background-model-independent determination of the mixing angle yields sin$^2(2\theta_{13})=0.094\pm0.017$, being the best-fit total background rates fully consistent with the cosmogenic background model. A second oscillation analysis is also performed constraining the total background rates to the cosmogenic background estimates. While the central value is not significantly modified due to the consistency between the reactor-off data and the background estimates, the addition of the background model reduces the uncertainty on $\theta_{13}$ to 0.015. Along with the oscillation results, the normalization of the anti-neutrino rate is measured with a precision of 0.86\%, reducing the 1.43\% uncertainty associated to the expectation.
Keywords	High Energy Physics - Experiment ; Physics - Instrumentation and Detectors
Subject code	660
Publishing date	2020-07-27
Publishing country	us
Document type	Book ; Online
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Book ; Online: First Gadolinium Loading to Super-Kamiokande

Abe, K. / Bronner, C. / Hayato, Y. / Hiraide, K. / 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. / 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. / Hill, J. / Kim, J. Y. / Lim, I. T. / Park, R. G. / Bodur, B. / Scholberg, K. / Walter, C. W. / Bernard, L. / Coffani, A. / Drapier, O. / Hedri, S. El / 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. / Scott, M. / Sztuc, A. A. / Uchida, Y. / Cao, S. / Berardi, V. / Catanesi, M. G. / Radicioni, E. / Calabria, N. F. / Machado, L. N. / De Rosa, G. / Collazuol, G. / Iacob, F. / Lamoureux, M. / Mattiazzi, M. / Ospina, N. / Ludovici, L. / Maekawa, Y. / Nishimura, Y. / Friend, M. / Hasegawa, T. / Ishida, T. / Kobayashi, T. / Jakkapu, M. / Matsubara, T. / Nakadaira, T. / Nakamura, K. / Oyama, Y. / Sakashita, K. / Sekiguchi, T. / Tsukamoto, T. / Boschi, T. / Gao, J. / Di Lodovico, F. / Migenda, J. / Taani, M. / Zsoldos, S. / 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. / Tsui, K. M. / Fukuda, Y. / Itow, Y. / Menjo, H. / Niwa, T. / Sato, K. / Tsukada, M. / Lagoda, J. / Lakshmi, S. M. / Mijakowski, P. / Zalipska, J. / Jiang, J. / Jung, C. K. / Vilela, C. / Wilking, M. J. / Yanagisawa, C. / Hagiwara, K. / Harada, M. / Horai, T. / Ishino, H. / Ito, S. / Kitagawa, F. / Koshio, Y. / Ma, W. / Piplani, N. / Sakai, S. / Barr, G. / Barrow, D. / Cook, L. / Goldsack, A. / Samani, S. / Wark, D. / Nova, F. / 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. / Ichikawa, A. K. / Nishijima, K. / Koshiba, M. / Iwamoto, K. / Nakajima, Y. / Ogawa, N. / Yokoyama, M. / Martens, K. / Vagins, M. R. / Kuze, M. / Izumiyama, S. / Yoshida, T. / Inomoto, M. / Ishitsuka, M. / Ito, H. / Kinoshita, T. / Matsumoto, R. / Ohta, K. / Shinoki, M. / Suganuma, T. / 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. / O'Flaherty, M. / Richards, B. / Jamieson, B. / Walker, J. / Minamino, A. / Pintaudi, G. / Sano, S. / Sasaki, R.

2021

Abstract: In order to improve Super-Kamiokande's neutron detection efficiency and to thereby increase its sensitivity to the diffuse supernova neutrino background flux, 13 tons of Gd2(SO4)3*8H2O(gadolinium sulfate octahydrate) was dissolved into the detector's ... ...

Abstract	In order to improve Super-Kamiokande's neutron detection efficiency and to thereby increase its sensitivity to the diffuse supernova neutrino background flux, 13 tons of Gd2(SO4)38H2O(gadolinium sulfate octahydrate) was dissolved into the detector's otherwise ultrapure water from July 14 to August 17, 2020, marking the start of the SK-Gd phase of operations. During the loading, water was continuously recirculated at a rate of 60 m3/h, extracting water from the top of the detector and mixing it with concentrated Gd2(SO4)38H2O solution to create a 0.02% solution of the Gd compound before injecting it into the bottom of the detector. A clear boundary between the Gd-loaded and pure water was maintained through the loading, enabling monitoring of the loading itself and the spatial uniformity of the Gd concentration over the 35 days it took to reach the top of the detector.During the subsequent commissioning the recirculation rate was increased to 120 m3/h, resulting in a constant and uniform distribution of Gd throughout the detector and water transparency equivalent to that of previous pure-water operation periods. Using an Am-Be neutron calibration source the mean neutron capture time was measured to be $115.6\pm0.6$ $\mu$s, which corresponds to a Gd concentration of $110.9\pm1.4$ (stat.only) ppm, as expected for this level of doping. This paper describes changes made to the water circulation system for this detector upgrade, the Gd loading procedure, detector commissioning, and the first neutron calibration measurements in SK-Gd. Comment: 37 pages, 19 Figures, Submitted to Nucl. Instrum. Meth. A
Keywords	Physics - Instrumentation and Detectors ; Astrophysics - Instrumentation and Methods for Astrophysics
Subject code	551
Publishing date	2021-09-01
Publishing country	us
Document type	Book ; Online
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Article ; Online: Search for Boosted Dark Matter Interacting with Electrons in Super-Kamiokande.

Kachulis, C / Abe, K / Bronner, C / Hayato, Y / Ikeda, M / Iyogi, K / Kameda, J / Kato, Y / Kishimoto, Y / Marti, Ll / Miura, M / Moriyama, S / Nakahata, M / Nakano, Y / Nakayama, S / Okajima, Y / Orii, A / Pronost, G / Sekiya, H /

Shiozawa, M / Sonoda, Y / Takeda, A / Takenaka, A / Tanaka, H / Tasaka, S / Tomura, T / Akutsu, R / Kajita, T / Kaneyuki, K / Nishimura, Y / Okumura, K / Tsui, K M / Labarga, L / Fernandez, P / Blaszczyk, F D M / Gustafson, J / Kearns, E / Raaf, J L / Stone, J L / Sulak, L R / Berkman, S / Tobayama, S / Goldhaber, M / Elnimr, M / Kropp, W R / Mine, S / Locke, S / Weatherly, P / Smy, M B / Sobel, H W / Takhistov, V / Ganezer, K S / Hill, J / Kim, J Y / Lim, I T / Park, R G / Himmel, A / Li, Z / O'Sullivan, E / Scholberg, K / Walter, C W / Ishizuka, T / Nakamura, T / Jang, J S / Choi, K / Learned, J G / Matsuno, S / Smith, S N / Amey, J / Litchfield, R P / Ma, W Y / Uchida, Y / Wascko, M O / Cao, S / Friend, M / Hasegawa, T / Ishida, T / Ishii, T / Kobayashi, T / Nakadaira, T / Nakamura, K / Oyama, Y / Sakashita, K / Sekiguchi, T / Tsukamoto, T / Abe, K E / Hasegawa, M / Suzuki, A T / Takeuchi, Y / Yano, T / Hayashino, T / Hiraki, T / Hirota, S / Huang, K / Jiang, M / Nakamura, K E / Nakaya, T / Quilain, B / Patel, N D / Wendell, R A / Anthony, L H V / McCauley, N / Pritchard, A / Fukuda, Y / Itow, Y / Murase, M / Muto, F / Mijakowski, P / Frankiewicz, K / Jung, C K / Li, X / Palomino, J L / Santucci, G / Vilela, C / Wilking, M J / Yanagisawa, C / Ito, S / Fukuda, D / Ishino, H / Kibayashi, A / Koshio, Y / Nagata, H / Sakuda, M / Xu, C / Kuno, Y / Wark, D / Di Lodovico, F / Richards, B / Tacik, R / Kim, S B / Cole, A / Thompson, L / Okazawa, H / Choi, Y / Ito, K / Nishijima, K / Koshiba, M / Totsuka, Y / Suda, Y / Yokoyama, M / Calland, R G / Hartz, M / Martens, K / Simpson, C / Suzuki, Y / Vagins, M R / Hamabe, D / Kuze, M / Yoshida, T / Ishitsuka, M / Martin, J F / Nantais, C M / Tanaka, H A / Konaka, A / Chen, S / Wan, L / Zhang, Y / Wilkes, R J / Minamino, A

Physical review letters

2018 Volume 120, Issue 22, Page(s) 221301

Abstract: A search for boosted dark matter using 161.9 kt yr of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing ... ...

Abstract	A search for boosted dark matter using 161.9 kt yr of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing back to the Galactic center or the Sun. No such excess is observed. Limits on boosted dark matter event rates in multiple angular cones around the Galactic center and Sun are calculated. Limits are also calculated for a baseline model of boosted dark matter produced from cold dark matter annihilation or decay. This is the first experimental search for boosted dark matter from the Galactic center or the Sun interacting in a terrestrial detector.
Language	English
Publishing date	2018-06-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.120.221301
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Improved measurements of the neutrino mixing angle $\theta_{13}$ with the Double Chooz detector

Abe, Y. / Anjos, J. C. dos / Barriere, J. C. / Baussan, E. / Bekman, I. / Bergevin, M. / Bezerra, T. J. C. / Bezrukov, L. / Blucher, E. / Buck, C. / Busenitz, J. / Cabrera, A. / Caden, E. / Camilleri, L. / Carr, R. / Cerrada, M. / Chang, P. -J. / Chauveau, E. / Chimenti, P. /

Collin, A. P. / Conover, E. / Conrad, J. M. / Crespo-Anadón, J. I. / Crum, K. / Cucoanes, A. S. / Damon, E. / Dawson, J. V. / Dhooghe, J. / Dietrich, D. / Djurcic, Z. / Dracos, M. / Elnimr, M. / Etenko, A. / Fallot, M. / von Feilitzsch, F. / Felde, J. / Fernandes, S. M. / Fischer, V. / Franco, D. / Franke, M. / Furuta, H. / Gil-Botella, I. / Giot, L. / Göger-Neff, M. / Gonzalez, L. F. G. / Goodenough, L. / Goodman, M. C. / Grant, C. / Haag, N. / Hara, T. / Haser, J. / Hofmann, M. / Horton-Smith, G. A. / Hourlier, A. / Ishitsuka, M. / Jochum, J. / Jollet, C. / Kaether, F. / Kalousis, L. N. / Kamyshkov, Y. / Kaplan, D. M. / Kawasaki, T. / Kemp, E. / de Kerret, H. / Kryn, D. / Kuze, M. / Lachenmaier, T. / Lane, C. E. / Lasserre, T. / Letourneau, A. / Lhuillier, D. / Lima Jr, H. P. / Lindner, M. / López-Castaño, J. M. / LoSecco, J. M. / Lubsandorzhiev, B. / Lucht, S. / Maeda, J. / Mariani, C. / Maricic, J. / Martino, J. / Matsubara, T. / Mention, G. / Meregaglia, A. / Miletic, T. / Milincic, R. / Minotti, A. / Nagasaka, Y. / Nikitenko, Y. / Novella, P. / Oberauer, L. / Obolensky, M. / Onillon, A. / Osborn, A. / Palomares, C. / Pepe, I. M. / Perasso, S. / Pfahler, P. / Porta, A. / Pronost, G. / Reichenbacher, J. / Reinhold, B. / Röhling, M. / Roncin, R. / Roth, S. / Rybolt, B. / Sakamoto, Y. / Santorelli, R. / Schilithz, A. C. / Schönert, S. / Schoppmann, S. / Shaevitz, M. H. / Sharankova, R. / Shimojima, S. / Shrestha, D. / Sibille, V. / Sinev, V. / Skorokhvatov, M. / Smith, E. / Spitz, J. / Stahl, A. / Stancu, I. / Stokes, L. F. F. / Strait, M. / Stüken, A. / Suekane, F. / Sukhotin, S. / Sumiyoshi, T. / Sun, Y. / Svoboda, R. / Terao, K. / Tonazzo, A. / Thi, H. H. Trinh / Valdiviesso, G. / Vassilopoulos, N. / Veyssiere, C. / Vivier, M. / Wagner, S. / Walsh, N. / Watanabe, H. / Wiebusch, C. / Winslow, L. / Wurm, M. / Yang, G. / Yermia, F. / Zimmer, V.

2014

Abstract: The Double Chooz experiment presents improved measurements of the neutrino mixing angle $\theta_{13}$ using the data collected in 467.90 live days from a detector positioned at an average distance of 1050 m from two reactor cores at the Chooz nuclear ... ...

Abstract	The Double Chooz experiment presents improved measurements of the neutrino mixing angle $\theta_{13}$ using the data collected in 467.90 live days from a detector positioned at an average distance of 1050 m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties with respect to previous publications, whereas the efficiency of the $\bar\nu_{e}$ signal has increased. The value of $\theta_{13}$ is measured to be $\sin^{2}2\theta_{13} = 0.090 ^{+0.032}_{-0.029}$ from a fit to the observed energy spectrum. Deviations from the reactor $\bar\nu_{e}$ prediction observed above a prompt signal energy of 4 MeV and possible explanations are also reported. A consistent value of $\theta_{13}$ is obtained from a fit to the observed rate as a function of the reactor power independently of the spectrum shape and background estimation, demonstrating the robustness of the $\theta_{13}$ measurement despite the observed distortion. Comment: 44 pages, 25 figures. Figures 21 and 22 have been replaced (statistical error bars for bins above 8 MeV have become smaller). No other changes in the results of the paper; an Erratum submitted to JHEP
Keywords	High Energy Physics - Experiment ; Physics - Instrumentation and Detectors
Subject code	660
Publishing date	2014-06-30
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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