OPAL and More

We shall summarize some of the research activities performed in collaboration with Ben Shen in the OPAL experiment at LEP and in the CMS experiment at the LHC. And we shall recall the LEP legacy to particle physics in general and to the Standard Model in particular. Short recollections are made in other fields in which Ben was interested, in particular in Astroparticle Physics.Comment: Talk given at the Benjamin C. Shen Memorial Symposium, UCR, March 8, 2008. Changed reference

Hadron-hadron and hadron-nuclei collisions at high energies

A brief review is made of the present situation of hadron-hadron and hadron-nuclei total elastic and inelastic cross sections at high energiesComment: 7 page

Science,technology and society

We shall discuss some aspects of science and technology, their increasing role in the society, the fast advances in modern science, the apparent decrease of interest of the young generation in basic sciences, the importance of proper science popularization for better public education and awareness in scientific fields.Comment: Lecture at the 7th School on Non-Accelerator Astroparticle Physics, Trieste,Italy,200

Neutrino Physics and Astrophysics with the MACRO Experiment at the Gran Sasso Lab

The results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ~ 4 and ~ 50 GeV. The Multiple Coulomb Scattering of muons in the MACRO absorbers was used to estimate the neutrino energy of each event of the higher energy sample. The angular distributions, the absolute fluxes and the L/E distribution favour nu_mu nu_tau oscillations with maximal mixing and Delta m^2=0.0025 eV^2. Results are presented on the searches for astrophysical sources of high energy muon neutrinos, for bursts of electron antineutrinos from stellar gravitational collapses and on indirect searches for WIMPs from the Earth and from the Sun.Comment: 12 pages, 10 PS and EPS figures. Invited paper at the 25^ Meeting of the Nuclear Division of the Brasilian Physical Society, S. Pedro, Brasil, 1-4 September 2002. Corrected references and sect

Recent OPAL measurements in non-perturbative QCD

Using multihadronic Z0 decays recorded in 1991-1995 by the OPAL detector in e+e- collisions at LEP1, experimental analyses were made of the following subjects: (a) Bose-Einstein correlations; (b) Intermittency and correlations; (c) rho and omega spin alignments; (d) A search for the tensor glueball candidate fj(2200).Comment: 6 pages, 5 Encapsulated Postscript figures, uses APS revtex.sty To be published in the proceedings of American Physical Society (APS) Meeting of the Division of Particles and Fields (DPF99), Los Angeles, CA, 5-9 Jan 199