Leptons (Nuclear physics)

Leptons (Nuclear physics)

Interviewed by
David Zierler
Location
Video conference
Abstract

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Interviewed by
David Zierler
Interview date
Location
Video conference
Abstract

Interview with A.J. Stewart Smith, the Class of 1909 Professor of Physics, emeritus, at Princeton University, who also served as the university vice president for the Princeton Plasma Physics Laboratory. Smith begins the interview with an overview of his affiliations with SNOLAB, CERN, and Italian Nuclear and Particle Physics. He recaps the effects of the pandemic on experimental particle physics. Smith then summarizes his family history and his childhood in Canada, where he became interested in the sciences in high school. Smith recalls his undergraduate studies in physics at University of British Columbia, where he also earned a master’s degree, as well as his decision to pursue a PhD at Princeton. He describes working on the Princeton-Penn Accelerator with his advisor Pierre Piroue, and the subsequent offer of a fellowship at DESY working with Sam Ting on QED. Smith recounts his move back to Princeton to join the faculty, and he describes the “bipartisanship” between experimentalists and theorists at the time. He discusses the origins of the Chicago-Princeton collaboration at Fermilab, his involvement with E-787 experiment at Brookhaven, and his time as technical coordinator and spokesperson for the BaBar experiment. The interview concludes with Smith’s recollections of his time as Princeton’s first dean of research, as well as his reflections on times when theory has led experimentation, and vice versa.

Interviewed by
David Zierler
Interview date
Location
Video conference
Abstract

Interview with Yifang Wang, Director of the Institute of High Energy Physics, Chinese Academy of Sciences. He describes the role of the Institute within the Chinese Academy, and he recounts his childhood in Nanjing, Jiangsu Province, in China. Wang discusses his undergraduate work in nuclear physics at Nanjing University and he discusses the opportunities to being chosen by Sam Ting to go to CERN. He discusses his graduate work at the University of Florence, where Ting had the L3 experiment, and he described his work going back and forth from CERN for six years, and his involvement in the Higgs search and excited leptons. Wang discusses his postgraduate work in tau polarization and some of the theoretical bases for testing the Standard Model. He describes his work on the AMS collaboration and the search for antimatter, and he describes his postdoctoral work in neutrino oscillations at Stanford. Wang discusses the opportunities leading to his offer from the Institute of High Energy Physics in Beijing and the prospect of shooting a neutrino beam. He discusses the unique ways that the Chinese government supports physics, and the importance of the Beijing Electron-Positron Collider and the search for glueballs. Wang describes his increasing responsibilities at the Institute leading to his directorship, and he discusses his current work on the Large Circular Collider and the future prospects of high energy physics in China. He describes his tenure as director of Juno and the origins of the Daya Bay experiment. At the end of the interview, Wang asserts that the future of elementary particle physics is through the Higgs for which new understandings of space and time will be achieved, and he emphasizes the importance of scientific collaboration and the benefits of competition as a key component in the future of American-Chinese relations.

Interviewed by
David Zierler
Interview date
Location
Video conference
Abstract

Interview with Sarah Demers, Horace D. Taft Associate Professor of Physics at Yale University. Demers explains her academic lineage connection to Taft, and she surveys the challenges of remote work in the pandemic. She recounts her Vermont childhood growing up in the church as the daughter of a United Methodist minister and how her family discussed the compatibility of science and religion. Demers discusses her undergraduate experience at Harvard and her early struggles with physics. She describes her relationship with Melissa Franklin and her first experiences with the CDF detector project at Fermilab. Demers explains her decision to go to the University of Rochester for graduate school where she studied under the direction of Kevin McFarland, and she describes plotting the Z boson at Fermilab. She describes her first job teaching at Roberts Wesleyan College and her subsequent appointment as part of SLAC’s team for ATLAS at CERN, where she developed an infinity for the triggers of experiments. Demers explains the opportunities that led to her faculty appointment at Yale, and she describes the interests that led to her book on physics and dance. She discusses her ongoing collaboration with ATLAS, the tenure process at Yale, and her work on Mu2e. Demers describes the “aesthetic hints” that may prove to be physics beyond the Standard Model, and she explains why the LHC can play a pivotal role in the search for dark matter. At the end of the interview, Demers discusses her current interest in tau leptons, she describes the issue of bias as a blockage to improving diversity in the field, and she reflects on the technological improvements that have propelled her field forward.