摘要

While the Standard Model of particle physics has been completely validated by experiment, several experimental facts and theoretical arguments suggest that it cannot be the final theory. The standard approach for discovering physics beyond the Standard Model is followed at the energy frontier explored at the LHC with so far no new finding. Another way is to carry high precision measurements at lower energies, such as in the B-factories. We shall discuss her an extreme case through an ultra precise comparison of the measured of the muon magnetic anomaly and its standard prediction. The present status shows a persisting deviation approaching 4 standard deviations which could be a signal for new physics. A decisive step will occur in the next few months as a new and more precise determination is underway at Fermilab. Current theoretical and experimental efforts to improve the prediction will be discussed.

报告人简介

Professor Michel Davier obtained his PhD from Université Paris-Sud 11, Orsay, France in 1969. He designed and built experiments at a numerous laboratories including LAL(Orsay, France), SLAC(Stanford, US), DESY(Hamburg, Germany), CERN(Geneva, Switzerland), Virgo Observatory(Pisa, Italy). His research covers both phenomenology studies and theoretical work. Moreover, he has published more than 1,500 papers and several books. From 1985 to 1994 Professor Davier was director of Laboratoire de l’Accélérateur Linéaire (Orsay). He was also the co-founder of FCPPL(the France China Particle Physics Laboratory). He has been on multiple advisory committees in worldwide institutes including SLAC, CERN, KEK, IHEP, etc. He is elected member of the French Academy of Sciences, and was awarded with various prestigious prizes, such as Lagarrigue Prize (LAL and French Physical Society, etc.