Precision computations for standard model and beyond

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Who would not want to know the basic constituents of our world and the way they interact? Nuclear and particle physics studies exactly that. According to the Standard Model of particle physics, there are six types of quarks, six types of leptons, and corresponding anti-particles connected by four interactions. For decades it was believed that a lepton called a neutrino should have neither charge nor mass. However, new measurements from the Sudbury Neutrino Observatory, a world-class Canadian facility, have clearly shown that solar neutrinos change their type in transit to the Earth, which can only be explained by small mass. Does this mean that the Standard Model of Particle Physics is incorrect, or just an approximation of a larger, more global model? The neutrinos are being detected via weak interaction. That alone would make weak interaction worth studying more closely. In addition, it violates parity! We can conduct experiments of parity-violating electron-nucleon scattering to study the distribution and dynamics of "strange" quarks in the nucleon, using "strange" quark as a key to the overall understanding of quark-antiquark sea properties.