Speaker: Mike Sullivan（SLAC，USA）

Moderator: Dr. Weiren Chou, FNAL, USA/IHEP

Time: 15:00, March 10, 2015

Place: Room B326, IHEP Main Building

Abstract:

The discovery of three quark and lepton generations of fundamental Standard Model particles has led to a great deal of speculation about some form of sub-structure for these particles. Here we present an idea about sub-structure that emanates directly from symmetrized Maxwell’s equations which include magnetic charge. The premise stems from the discovery of another solution to Maxwell’s equations that is stationary and can carry both electric and magnetic charge. This solution (called a vorton) like the photon has no scale and hence in a (mostly) magnetically charged manifestation can be used to construct the presently known Standard Model fermions. I will present some of the details of the vorton model and how it can be used to build the known Standard Model fermions. This model also predicts the existence of magnetically charged counterparts to the standard fermions. These magnetically charged particles would have only 1e strength of magnetic charge. In particular, there should be a stable magnetically charged electron counterpart which we have called a magneticon. We believe the High Energy Physics field has not been looking for these possible particles and that we may have been creating these particles for some time without knowing it. We are currently trying to see whether the available BaBar dataset contains some magneticons. Any e+e- collider should try to look for these magnetically charged particles.

About the speaker:

Mike Sullivan got his PhD on an experiment at SPEAR looking for tagged 2-photon reactions in 1979. He then worked as a postdoc on another tagged two-photon experiment PEP-9 on PEP-I at SLAC. He then became part of the design team for the PEP-II B-factory interaction region and helped develop the IR design as a working compromise between machine and detector requirements. He helped to oversee the construction and quality control of the permanent magnets in the IR design and was the physicist in charge of overseeing the vacuum chamber design and construction for the interaction region. He was part of the commissioning team of the PEP-II B-factory and became one of the program coordinators for the PEP-II accelerator.

He helped to develop the design of the SuperB factory in Frascati and is one of the Review committee members for the superKEKB IR design. He has helped develop a very preliminary design of the LHeC IR and he advised on the design of BEPC-II IR. He is also working with the JLAB team to develop a feasible IR design for the MEIC which is a proposal for an electron-ion collider at JLAB.