Parity and time reversal violation in atoms and search for physics beyond the Standard Model

by Prof. Victor Flambaum (UNSW Sydney)

Tuesday 7 Jul 2009, 16:45 → 18:15 Europe/Berlin

Hoersaal (MPP)

The measurements of the Cs weak charge by the group of C. Wieman indicated a possible deviation from the Standard Model predictions. We performed new calculations of the parity violation in Cs including all-orders summation of the dominating diagrams in many-body theory and strong Coulomb field radiative corrections. The theoretical error was reduced two times. Conclusions for the Standard Model and possible "new physics" will be discussed. Atomic and molecular experiments can also be used to detect nuclear anapole moment - magnetic multipole which violates fundamental symmetries: parity (P) and charge conjugation (C). Measurements of atomic electric dipole moments (EDM) present a possibility to search for physics beyond the Standard model. We explain different mechanisms generating atomic EDM and present results of recent measurements testing models of CP violation. New generation of experiments with enhanced effects will put popular models (e.g. supersymmetry) to a crucial test.