Speaker
Aleksandrs Aleksejevs
(Memorial University of Newfoundland)
Description
The best way to search for new physics is by using a diverse set of probes - not just experiments at the energy and the cosmic frontiers, but also the low-energy measurements relying on high precision and high luminosity.
One example of ultra-precision experiments is MOLLER planned at JLab, which will measure the parity-violating electron-electron scattering asymmetry and allow a determination of the weak mixing angle with a factor of five improvement in precision over its predecessor, E-158. At this precision, any inconsistency with the Standard Model should signal new physics. Another promising new physics probe, Belle II experiment at SuperKEKB, will study low-energy electron-positron collisions at high luminosity.
The talk will outline the recent developments of the theoretical and computational approaches to higher-order electroweak effects needed for the accurate interpretation of experimental data, and show how new physics particles enter at the one-loop level. For MOLLER and Belle II, we analyze the effects of Z'-boson and dark photon on the total calculated cross section and asymmetry, and show how these hypothetical interactions carriers may influence the future experimental results.
Author
Aleksandrs Aleksejevs
(Memorial University of Newfoundland)
Co-authors
Svetlana Barkanova
(Acadia University)
Vladimir Zykunov
(Belorussian State University (BY))
Dr
Yury Bystritskiy
(JINR)
