出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The standard model weak interactions can be described by four-fermion V A operators at low energies. New physics at the TeV scale can, however, generate the other Lorentz structures. In this talk, we review the constraints on such interactions from nuclear and hadronic decays, as well as from collider searches. Currently the most stringent bounds come from the analysis of the 0+ ! 0+ nuclear and the p ! eng radiative pion decays. In the near future, the ultracold neutron beta decay experiments and the direct LHC measurements will compete in setting the most stringent bounds, provided, however, that the neutron-to-proton non-perturbative transition matrix elements can be calculated to a level of 10–20% accuracy.
