![]() ![]() The technique is based on the derivative of a hypothetical experimental discovery limit as a function of exposure, and leads to a neutrino floor that is only influenced by the systematic uncertainties on the neutrino flux normalizations. #DEFINITION OF NEUTRINO FREE#Here we propose to define the neutrino floor as the boundary of the neutrino fog, and develop a calculation free from these assumptions. The downside of current methods of deriving the neutrino floor are that they rely on arbitrary choices of experimental exposure and energy threshold. ![]() As a consequence, some have recently advocated for calling it the “neutrino fog” instead. However, it has been known for some time that the neutrino floor is not a hard limit, but can be pushed past with sufficient statistics. It is commonly interpreted as the point at which dark matter signals become hidden underneath a remarkably similar-looking background from neutrinos. ![]() 2015.The neutrino floor is a theoretical lower limit on WIMP-like dark matter models that are discoverable in direct detection experiments. Our floor is broadly similar to those found in the literature, but differs by almost an order of magnitude in the sub-GeV range, and above 20 GeV.Ĭhoi K, Abe K, Haga Y, Hayato Y, Iyogi K, Kameda J, Kishimoto Y, Miura M, Moriyama S, Nakahata M, Nakano Y, Nakayama S, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Tomura T, Wendell RA, Irvine T, Kajita T, Kametani I, Kaneyuki K, Lee KP, Nishimura Y, Okumura K, McLachlan T, Labarga L, Kearns E, Raaf JL, Stone JL, Sulak LR, Berkman S, Tanaka HA, Tobayama S, Goldhaber M, Carminati G, Kropp WR, Mine S, Renshaw A, Smy MB, Sobel HW, Ganezer KS, 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, Bronner C, Hirota S, Huang K, Ieki K, Ikeda M, Kikawa T, Minamino A, Nakaya T, Suzuki K, Takahashi S, Fukuda Y, Itow Y, Mitsuka G, Mijakowski P, Hignight J, Imber J, Jung CK, Yanagisawa C, Ishino H, Kibayashi A, Koshio Y, Mori T, Sakuda M, Yano T, Kuno Y, Tacik R, Kim SB, Okazawa H, Choi Y, Nishijima K, Koshiba M, Totsuka Y, Yokoyama M, Martens K, Marti L, Vagins MR, Martin JF, de Perio P, Konaka A, Wilking MJ, Chen S, Zhang Y, Wilkes RJ (Super-Kamiokande Collaboration). After discovery of heavy neutron by Chadwick (1932), Enrico Fermi dubbed. Here we propose to define the neutrino floor as the boundary of the neutrino fog, and develop a calculation free from these assumptions. Originated by Pauli, using the term neutron. As a consequence, some have recently advocated for calling it the "neutrino fog" instead. There is a distinct kind of neutrino associated with each of the massive leptons. The neutrino floor is a theoretical lower limit on WIMP-like dark matter models that are discoverable in direct detection experiments. any of the massless or nearly massless electrically neutral leptons. ![]()
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