New methods and simulations for cosmogenic induced spallation removal in Super-Kamiokande-IV
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Published:2024-08-02
Issue:3
Volume:110
Page:
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ISSN:2470-0010
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Container-title:Physical Review D
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language:en
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Short-container-title:Phys. Rev. D
Author:
Locke S.1ORCID, Coffani A.2, Abe K.33, Bronner C.3ORCID, Hayato Y.33ORCID, Ikeda M.3ORCID, Imaizumi S.3, Ito H.3ORCID, Kameda J.33, Kataoka Y.3ORCID, Miura M.33, Moriyama S.33ORCID, Nagao Y.3, Nakahata M.33ORCID, Nakajima Y.33ORCID, Nakayama S.33ORCID, Okada T.3, Okamoto K.3, Orii A.3, Pronost G.3ORCID, Sekiya H.33ORCID, Shiozawa M.33ORCID, Sonoda Y.3, Suzuki Y.3, Takeda A.33, Takemoto Y.3ORCID, Takenaka A.3, Tanaka H.3, Yano T.3ORCID, Hirade K.3, Kanemura Y.3, Miki S.3, Watabe S.3, Han S.3ORCID, Kajita T.33, Okumura K.33ORCID, Tashiro T.3ORCID, Xia J.3ORCID, Wang X.3, Megias G. D.3ORCID, Bravo-Berguño D.4, Labarga L.4ORCID, Marti Ll.4ORCID, Zaldivar B.4, Pointon B. W.56ORCID, Blaszczyk F. d. M.7, Kearns E.73ORCID, Raaf J. L.7, Stone J. L.73, Wan L.7ORCID, Wester T.7ORCID, Bian J.1, Griskevich N. J.1ORCID, Kropp W. R.1, Mine S.1, Smy M. B.13ORCID, Sobel H. W.13ORCID, Takhistov V.13, Weatherly P.1, Yankelevich A.1ORCID, Hill J.8, Kim J. Y.9, Lim I. T.9, Park R. G.9, Bodur B.10ORCID, Scholberg K.103ORCID, Walter C. W.103ORCID, Bernard L.2, Drapier O.2, Hedri S. El2, Giampaolo A.2, Gonin M.2, Mueller Th. A.2ORCID, Paganini P.2ORCID, Quilain B.2, Santos A. D.2, Ishizuka T.11, Nakamura T.12, Jang J. S.13, Learned J. G.14, Anthony L. H. V.15, Sztuc A. A.15, Uchida Y.15, Martin D.15, Scott M.15ORCID, Berardi V.16ORCID, Catanesi M. G.16, Radicioni E.16, Calabria N. F.17ORCID, Machado L. N.17ORCID, De Rosa G.17, Collazuol G.18ORCID, Iacob F.18ORCID, Lamoureux M.18, Ospina N.18ORCID, Mattiazzi M.18ORCID, Ludovici L.19, Nishimura Y.20ORCID, Maewaka Y.20, Cao S.21, Friend M.21, Hasegawa T.21ORCID, Ishida T.21, Kobayashi T.21, Jakkapu M.21, Matsubara T.21ORCID, Nakadaira T.21, Nakamura K.213ORCID, Oyama Y.21ORCID, Sakashita K.21, Sekiguchi T.21, Tsukamoto T.21, Nakano Y.22ORCID, Shiozawa T.22, Suzuki A. T.22, Takeuchi Y.223, Yamamoto S.22, Kotsar Y.22, Ozaki H.22, Ali A.23, Ashida Y.23, Feng J.23, Hirota S.23, Ichikawa A. K.23ORCID, Kikawa T.23, Mori M.23, Nakaya T.233ORCID, Wendell R. A.233ORCID, Yasutome K.23, Fernandez P.24ORCID, McCauley N.24ORCID, Mehta P.24, Tsui K. M.24, Fukuda Y.25ORCID, Itow Y.2626ORCID, Menjo H.26ORCID, Niwa T.26, Sato K.26, Tsukada M.26, Mijakowski P.27, Lagoda J.27, Lakshmi S. M.27, Zalipska J.27, Jung C. K.28, Vilela C.28, Wilking M. J.28, Yanagisawa C.28ORCID, Jiang J.28, Hagiwara K.29, Harada M.29ORCID, Horai T.29, Ishino H.29, Ito S.29, Koshio Y.293ORCID, Ma W.29, Piplani N.29, Sakai S.29ORCID, Kitagawa H.29, Barr G.30, Barrow D.30ORCID, Cook L.303, Goldsack A.303, Samani S.30, Wark D.3031, Nova F.31ORCID, Boschi T.32, Di Lodovico F.32, Taani M.32, Zsoldos S.32ORCID, Gao J.32, Migenda J.32ORCID, Yang J. Y.33ORCID, Jenkins S. J.34ORCID, Malek M.34, McElwee J. M.34, Stone O.34, Thiesse M. D.34ORCID, Thompson L. F.34ORCID, Okazawa H.35, Nakamura K.36, Kim S. B.37, Yu I.37ORCID, Seo J. W.37ORCID, Nishijima K.38ORCID, Koshiba M.39, Iwamoto K.3, Ogawa N.3, Yokoyama M.33ORCID, Martens K.3ORCID, Vagins M. R.31ORCID, Nakagiri K.339, Kuze M.40ORCID, Izumiyama S.40ORCID, Yoshida T.40, Inomoto M.41, Ishitsuka M.41, Matsumoto R.41ORCID, Ohta K.41, Shinoki M.41ORCID, Suganuma T.41, Kinoshita T.41, Martin J. F.42, Tanaka H. A.42, Towstego T.42, Akutsu R.6, Hartz M.6, Konaka A.6, de Perio P.6ORCID, Prouse N. W.6, Chen S.43ORCID, Xu B. D.43ORCID, Zhang Y.43, Posiadala-Zezula M.44, Richards B.45, Jamieson B.46, Walker J.46, Minamino A.47ORCID, Okamoto K.47, Pintaudi G.47, Sasaki R.47
Affiliation:
1. University of California 2. Laboratoire Leprince-Ringuet 3. University of Tokyo 4. University Autonoma Madrid 5. British Columbia Institute of Technology 6. TRIUMF 7. Boston University 8. California State University 9. Chonnam National University 10. Duke University 11. Fukuoka Institute of Technology 12. Gifu University 13. Gwangju Institute of Science and Technology 14. University of Hawaii 15. Imperial College London 16. INFN Sezione di Bari and Università e Politecnico di Bari 17. INFN Sezione di Napoli and Università di Napoli 18. INFN Sezione di Padova and Università di Padova 19. INFN Sezione di Roma and Università di Roma “La Sapienza,” 20. Keio University 21. High Energy Accelerator Research Organization (KEK) 22. Kobe University 23. Kyoto University 24. University of Liverpool 25. Miyagi University of Education 26. Nagoya University 27. National Centre For Nuclear Research 28. State University of New York at Stony Brook 29. Okayama University 30. Oxford University 31. Rutherford Appleton Laboratory 32. King’s College London 33. Seoul National University 34. University of Sheffield 35. Shizuoka University of Welfare 36. Tohoku University 37. Sungkyunkwan University 38. Tokai University 39. The University of Tokyo 40. Tokyo Institute of Technology 41. Tokyo University of Science 42. University of Toronto 43. Tsinghua University 44. University of Warsaw 45. University of Warwick 46. University of Winnipeg 47. Yokohama National University
Abstract
Radioactivity induced by cosmic muon spallation is a dominant source of backgrounds for O(10 MeV) neutrino interactions in water Cherenkov detectors. In particular, it is crucial to reduce backgrounds to measure the solar neutrino spectrum and find neutrino interactions from distant supernovae. In this paper we introduce new techniques to locate muon-induced hadronic showers and efficiently reject spallation backgrounds. Applying these techniques to the solar neutrino analysis with an exposure of 2790×22.5 kton·day increases the signal efficiency by 12.6%, approximately corresponding to an additional year of detector running. Furthermore, we present the first spallation simulation at Super-Kamiokande, where we model hadronic interactions using . The agreement between the isotope yields and shower pattern in this simulation and in the data gives confidence in the accuracy of this simulation, and thus opens the door to use it to optimize muon spallation removal in new data with gadolinium-enhanced neutron capture detection.
Published by the American Physical Society
2024
Funder
Ministry of Education, Culture, Sports, Science and Technology U.S. Department of Energy National Science Foundation National Research Foundation of Korea Japan Society for the Promotion of Science National Natural Science Foundation of China Ministerio de Ciencia e Innovación Natural Sciences and Engineering Research Council of Canada Narodowe Centrum Nauki Science and Technology Facilities Council European Commission HORIZON EUROPE Marie Sklodowska-Curie Actions Compute Canada
Publisher
American Physical Society (APS)
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