[en] The subject of this workshop focuses on the search for new and exotic phenomena. Phenomena which are not yet discovered and/or understood and to which a large amount of efforts have been devoted during the last few years: proton decay, dark matter, neutrino masses and oscillations, axions, fifth force

[en] An introduction to solar oscillations, their properties and diagnostic potential, and a review of our present knowledge is presented. The solar irradiance data from the ACRIM (Active Cavity Radiometer for Irradiance Monitoring) solar constant experiment on board the Solar Maximum Mission satellite (SMM) are used to search for solar gravity modes, which yield a direct information on the structure of the solar core. The power spectra of the time series of 270 days in 1980 and of 240 days in 1984 are analysed using a statistical method for the determination of the basic g-mode period separation P₀ and the rotational frequency ν_r. The results of the analysis in the frequency range from 15 to 35 μHz yield a P_o of 29.7 minutes. This indicates a nearly isothermal core - a possible explanation of the low (high energy) neutrino count in the Davis experiment. Moreover, it is close to the expected value for a WIMP model such as proposed by Faulkner. The rotational period in the center of the sun inferred from the splitting of the g-modes amounts to 10.7 days which is about 2.5 times the photospheric rate

[en] Two exotic phenomena, neutrino masses and mixings and the possible milligravitational ''fifth force'' are related in a theoretical frame extending the gauge group of the standard model with a new U(1) factor whose gauge boson mediates the fifth force. The experimental implications are discussed

[en] A search for majoron emission accompanying neutrinoless double beta decay in ⁷⁶Ge was conducted with a low background germanium detector in the St. Gotthard underground laboratory. No evidence for neutrinoless double beta decay with or without majoron emission was found, with a lower limit for the half life of the majoron branch of t_1/2>1.2x10²¹ years at 90% confidence level and t_1/2>5.4x10²² years (90%c.l.) for the branch without majoron emission

[en] The Frejus detector is a fine grained iron calorimeter originally designed to find evidence for nucleon decay. We observed (83 fully contained - and 41 semi contained events with a visible energy greater than 200 MeV corresponding to a sensitivity of 0.882 kton-years (kty) (fiducial mass x lifetime). From our simulations using the atmospheric ν-flux calculations we expect 143 events:kty which is in remarkable agreement with the measured number of 124 events/0.882 kty. Analysing these events searching for nucleon decay we found 1 candidate with a charged lepton in the final state and 1 candidate in the channel n → antiν + π⁰. Carefully ν-background estimations with a ν-simulation procedure and with the reanalysis of the Aachen-Padova experiment yield a background expectation of 0.2 events/0.88 kty (for the charged lepton candidate) and 1 event/ 0.88 kty (for n → antiν + π⁰)

[en] The hypothesis that Dark Matter is made out of exotic particles is definite enough to be testable in a variety of ways. We review the first generation experiments looking for dark matter particles, using conventional techniques. They may find those particles and in any case will provide powerful constraints. We argue that in the long run, cryogenic detectors will have to be used for that type of physics, and since the European effort is covered by other speakers, we review the present developments in this area in the USA

[en] We use the distribution of total charged energy in three-track τ decay to place an upper limit on the mass of the τ neutrino. Including both statistical and systematic uncertainties, the 95% confidence limit is m_v<85 MeV/c²

[en] The exact and rephasing invariant formula for the ε parameter goes to infinity when the condition keM₁₂A₀antiA₀* < 0 is not satisfied, and leads to ΔmΔγ > 0, which is ruled out by experiment

[en] Modern theories of quantum gravity, generically contain spin-1 vector and spin-0 scalar partners of the graviton. The effects of the vector partner and the scalar partner can approximately cancel for matter-matter interactions, but can add to produce sizeable results for antimatter-matter interactions. In particular, using the new Stacey, Tuck, and Moore analysis of their mine data, we find that the proposed LEAR antiproton gravity experiment could yield a new 14% effect which scales up with the size of the new coupling constants. We also discuss the implications of other experiments

[en] The author presents the interpretation of various experimental results of β spectra measurements and deduces the mass interval of the neutrino