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arXiv · 1905.03738

Search for Ultra-High-Energy Neutrinos with the Telescope Array Surface Detector

R. U. Abbasi·M. Abe·T. Abu-Zayyad·M. Allen·E. Barcikowski·J. W. Belz·D. R. Bergman·S. A. Blake·R. Cady·B. G. Cheon·J. Chiba·M. Chikawa·A. di Matteo·T. Fujii·K. Fujisue·K. Fujita·R. Fujiwara·M. Fukushima·G. Furlich·W. Hanlon·M. Hayashi·Y. Hayashi·N. Hayashida·K. Hibino·K. Honda·D. Ikeda·N. Inoue·T. Ishii·H. Ito·D. Ivanov·H. M. Jeong·S. Jeong·C. C. H. Jui·K. Kadota·F. Kakimoto·O. Kalashev·K. Kasahara·H. Kawai·S. Kawakami·S. Kawana·K. Kawata·E. Kido·H. B. Kim·J. H. Kim·S. Kishigami·V. Kuzmin·M. Kuznetsov·Y. J. Kwon·K. H. Lee·B. Lubsandorzhiev·J. P. Lundquist·K. Machida·K. Martens·T. Matsuyama·J. N. Matthews·R. Mayta·M. Minamino·K. Mukai·I. Myers·K. Nagasawa·S. Nagataki·K. Nakai·R. Nakamura·T. Nakamura·T. Nonaka·H. Oda·S. Ogio·M. Ohnishi·H. Ohoka·T. Okuda·Y. Omura·M. Ono·R. Onogi·A. Oshima·S. Ozawa·I. H. Park·M. S. Pshirkov·J. Remington·D. C. Rodriguez·G. Rubtsov·D. Ryu·H. Sagawa·R. Sahara·K. Saito·Y. Saito·N. Sakaki·T. Sako·N. Sakurai·L. M. Scott·T. Seki·K. Sekino·P. D. Shah·F. Shibata·T. Shibata·H. Shimodaira·B. K. Shin·H. S. Shin·J. D. Smith·P. Sokolsky·B. T. Stokes
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Abstract

We present an upper limit on the flux of ultra-high-energy down-going neutrinos for $E > 10^{18}\ \mbox{eV}$ derived with the nine years of data collected by the Telescope Array surface detector (05-11-2008 -- 05-10-2017). The method is based on the multivariate analysis technique, so-called Boosted Decision Trees (BDT). Proton-neutrino classifier is built upon 16 observables related to both the properties of the shower front and the lateral distribution function.

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R. U. Abbasi, M. Abe, T. Abu-Zayyad, M. Allen, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, R. Cady, B. G. Cheon, J. Chiba, M. Chikawa, A. di Matteo, T. Fujii, K. Fujisue, K. Fujita, R. Fujiwara, M. Fukushima, G. Furlich, W. Hanlon, M. Hayashi, Y. Hayashi, N. Hayashida, K. Hibino, K. Honda, D. Ikeda, N. Inoue, T. Ishii, H. Ito, D. Ivanov, H. M. Jeong, S. Jeong, C. C. H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, H. Kawai, S. Kawakami, S. Kawana, K. Kawata, E. Kido, H. B. Kim, J. H. Kim, S. Kishigami, V. Kuzmin, M. Kuznetsov, Y. J. Kwon, K. H. Lee, B. Lubsandorzhiev, J. P. Lundquist, K. Machida, K. Martens, T. Matsuyama, J. N. Matthews, R. Mayta, M. Minamino, K. Mukai, I. Myers, K. Nagasawa, S. Nagataki, K. Nakai, R. Nakamura, T. Nakamura, T. Nonaka, H. Oda, S. Ogio, M. Ohnishi, H. Ohoka, T. Okuda, Y. Omura, M. Ono, R. Onogi, A. Oshima, S. Ozawa, I. H. Park, M. S. Pshirkov, J. Remington, D. C. Rodriguez, G. Rubtsov, D. Ryu, H. Sagawa, R. Sahara, K. Saito, Y. Saito, N. Sakaki, T. Sako, N. Sakurai, L. M. Scott, T. Seki, K. Sekino, P. D. Shah, F. Shibata, T. Shibata, H. Shimodaira, B. K. Shin, H. S. Shin, J. D. Smith, P. Sokolsky, B. T. Stokes. 2019-05-09. Search for Ultra-High-Energy Neutrinos with the Telescope Array Surface Detector. https://doi.org/10.1134/s106377612005012x

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