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报告摘要：A very long-lived or stable uuddss state, called S or sexaquark to distinguish from the H-dibaryon (a molecular configuration of the same quarks) would have escaped detection in accelerator observations and lattice QCD. The S would be a good Dark Matter candidate and potentially explain several puzzles in astrophysics and cosmology. The search for a possible S contribution to the hadronic vacuum polarization (with Qiming Li and Changzheng Yuan of IHEP) lead to close examination of BESIII e+e- -> mu+mu- data and discovery of unexpected “invisible“ final states in e+e- annihilation. The audience will be enlisted to try to understand what these states may be.
个人简介：Prof. Glennys R. Farrar is a Collegiate Professor of Physics and Julius Silver, Rosalind S. Silver and Enid Silver Winslow Professor at New York University. She has broad interests in various fields, and contributed to the understandings of topical issues on QCD, Dark Matter, Ultrahigh Energy Cosmic Rays, and the magnetic field of the Milky Way.
She received her B.A. in Physics from the University of California (Berkeley) in 1967 and Ph. D. in Physics from Princeton University in 1971, the first woman to do so. She was a Member of the Institute for Advanced Study from 1971-1973, then Research Scientist at Caltech from 1973-1974. She was promoted to Assistant Professor at Caltech in 1974, but was converted to Senior Research Scientist in 1977, being told that was necessary to avoid that she would come up for tenure review. She joined the faculty of Rutgers University in 1979, then moved to NYU in 1998 to be Chair of the Physics Department . In 2001 she founded the Center for Cosmology and Particle Physics and served as its Director for seven years. Prof. Farrar is a recent Chair of the Division of Astrophysics of the American Physical Society and was a member of the Snowmass 2021 Steering Committee and has been a long-time editor of the Journal of Cosmology and Particle Physics. She is a Fellow of APS and AAAS; received Sloan, Guggenheim and Simons Fellowships; serves on advisory panels for NASA, NSF and the European Research Council. She was elected to the (U.S.) National Academy of Sciences in 2023.