[en] The results on I^G = 0⁺, J^PC = 0⁺⁺ π⁺π^- and K⁺K^- couplings, obtained by the coupled-channel analysis of the annihilation reactions at rest p-barp → π⁺π^-π⁰, K⁺K^-π⁰, K^±K⁰π^-+ at three different target densities, are presented

[en] The strategy followed by Obelix in looking for exotic signals and the constraints that link the different annihilation channels are described. The status of the analysis and the main results up to now obtained are reviewed. (orig.)

[en] A long list of new states, hard to reconcile with heavy-flavor quarkonium spectra, has been discovered in the last years mainly by means of e⁺e^- machines. An overview of the current experimental and phenomenological situation is given.

[en] The results of the spin-parity analysis of the annihilation reaction pp→π⁺π^-π⁰ at rest are presented. For the first time data from liquid, NTP and low pressure hydrogen are fitted simultaneously. This technique allows to disentangle unambiguously the contributions of the different initial atomic states. The results concern the weights of the partial waves, masses and widths of the 0⁺⁺, 1^-- and 2⁺⁺ resonances produced in the annihilation. (orig.)

[en] An experimental test of G-parity conservation is proposed, based on a measurement of the asymmetry around θ=π/2 in the center of mass of the π⁺π⁰ system for anti np annihilation in flight. The experiment can be performed by exploiting the high-intensity, low-energy anti n beam at LEAR and the OBELIX apparatus. (orig.)

[en] The influence of the value of g_A on the solar neutrino flux is discussed. It is shown that a more precise determination of g_A would be important to define the actual extent of the solar neutrino problem. (orig.)

[en] The annihilation frequency of the reaction p(bar sign)p→π⁰π⁰ at rest in liquid hydrogen has been measured by the Obelix experiment by using different apparatus configurations and trigger conditions. The value obtained is f(π⁰π⁰, LH)=(2.8±0.1_stat±0.4_syst)x10^-4. With the same data samples, the π⁰η annihilation frequency has been determined to be f(π⁰η, LH)=(0.9±0.2_stat±0.1_syst)x10^-4. The results are discussed within the frame of the present experimental situation

[en] The dependence of the energy cost of muons on the target density for the purposes of muon-catalyzed fusion in a deuterium-tritium target is investigated. The advantages of a particular target structure are discussed

[en] The relation between the branching ratios and direct CP asymmetries of B→Kπ decays and the angle γ of the CKM unitarity triangle is studied numerically in the general framework of the SU(3) approach, with minimal assumptions about the parameters not fixed by flavor-symmetry arguments. Experimental and theoretical uncertainties are subjected to a statistical treatment according to the Bayesian method. In this context, the experimental limits recently obtained by CLEO, BaBar and Belle for the direct CP asymmetries are translated into the bound vertical stroke γ-90 vertical stroke >21 at the 95% C.L. A detailed analysis is carried out to evaluate the conditions under which measurements of the CP averaged branching ratios may place a significant constraint on γ. Predictions for the ratios of charged (R_c) and neutral (R_n) B→Kπ decays are also presented. (orig.)

[en] Within errors of measurements, no tritium yield due to low-temperature nuclear dd fusion is observed in titanium of various modifications and in intermetallic compounds ZrNbV, LaCo5, LaNi4.9Al0.1, and MM0.7Ti0.3Mn2 saturated with deuterium. At a 90% confidence level, upper limits on the rate of dd fusion with tritium production in titanium and intermetallic compounds are found to be as follows: λf(Ti)≤2x10-23 s-1 (dd)-1 and λfeff (Ti; intermet.)≤6x10-24 s-1 (dd)-1