The Baikal Neutrino Experiment: Status and beyond

The present status of the Baikal Neutrino Experiment and the present results of a search for upward going atmospheric neutrinos, WIMPs, and magnetic monopoles obtained with the NT-200 detector are reviewed. The results of a search for very high-energy neutrinos are presented as well. An upper limit on the ν _e +ν _e +ν _τ neutrino diffuse flux of E ²Φ(E)<1.3×10⁻⁶ cm⁻² s⁻¹ sr⁻¹ GeV within a neutrino energy range of 10⁴–10⁷ GeV is obtained, assumingan E ⁻² behavior of the neutrino spectrum and a flavor ratio ν _e :ν _π :ν _τ =1:1:1. We also describe the moderate upgrade of the NT-200 planned for the next few years and present a possible detector on the Gigaton scale. From Yadernaya Fizika, Vol. 67, No. 6, 2004, pp. 1186–1194. Original English Text Copyright ? 2004 by Aynutdinov, Balkanov, Belolaptikov, Bezrukov, Budnev, Chensky, Chernov, Danilchenko, Dzhilkibaev, Domogatsky, Dyachok, Gaponenko, O. Gress, T. Gress, Klabukov, Klimov, Klimushin, Konischev, Koshechkin, Kulepov, Kuzmichev, Kuznetzov, Lubsandorzhiev, Mikheyev, Milenin, Mirgazov, Moiseiko, Osipova, Panfilov, G. Pan'kov, L. Pan'kov, Parfenov, Pavlov, Pliskovsky, Pokhil, Polecshuk, Popova, Prosin, Rosanov, Rubtzov, Semeney, Shaibonov, Spiering, Streicher, Tarashansky, Vasiliev, Vyatchin, Wischnewski, Yashin, Zhukov. This article was submitted by the authors in English.