In this biography
Quick facts
- Born
- 27 January 1936
- Birthplace
- Ann Arbor, MI, USA
- Country
- United States
- Nationality
- Not independently established
- Known for
- Co-discovering the J/psi particle through a precision lepton-pair experiment
Why this life matters
Co-discovering the J/psi particle through a precision lepton-pair experiment
Timeline
Key moments
Birth
Samuel Ting was born in Ann Arbor, MI, USA.
J particle observation
Led the Brookhaven experiment reporting a narrow electron–positron mass resonance.
Nobel recognition
Received Nobel recognition for the work described in the official award record.
A childhood between the United States and China
Samuel Chao Chung Ting was born in Ann Arbor, Michigan, in 1936 and spent much of his childhood in China and Taiwan. He returned to the University of Michigan for university study, earning degrees in mathematics and physics before completing a physics doctorate in 1962. His supervisors were Lawrence Jones and Martin Perl. The training placed him in an experimental tradition in which a detector’s ability to distinguish particles was as important as the accelerator’s ability to produce collisions.
Learning careful pair measurements
At CERN, Ting worked with Giuseppe Cocconi and later recalled the value of his careful experiments and simple physical explanations. Ting joined Columbia in 1965, then organised a Hamburg experiment to examine a reported disagreement with quantum electrodynamics. Work on electron and muon pairs became his principal research direction. He joined MIT in 1969. This trajectory explains why a precision pair spectrometer, rather than a general search for any unusual track, lay at the centre of his best-known discovery.
The Brookhaven J signal
In 1974 a collaboration including Ting and Sau Lan Wu reported a new heavy particle, named J, from an experiment at Brookhaven. Their spectrometer identified electron–positron pairs and reconstructed their effective mass. A narrow concentration above a smoother distribution provided the crucial signal. Independently, Burton Richter’s collaboration observed a narrow resonance at SPEAR and named it psi. The two experiments used different approaches to reveal the particle now known as J/psi; their independence should remain visible in the historical account.
Recognition for a precision discovery
Ting and Richter shared the 1976 Nobel Prize in Physics for their pioneering discovery of a heavy elementary particle of a new kind. Ting’s lecture explains the role of magnetic analysis, particle identification and mass reconstruction in the programme. His career illustrates how a deliberately specialised measurement can expose an unexpected feature of nature. The resulting discovery was collaborative, depending on accelerator facilities, detector components and analysis choices as well as leadership. Its evidential value comes from the reconstructed signal and independent confirmation, rather than from a famous name attached afterward.
Quick answers
Frequently asked questions about Samuel Ting
- Who supervised Ting’s doctorate?
- Lawrence Jones and Martin Perl at the University of Michigan.
- Why does the particle have the name J/psi?
- Ting’s group named its signal J, while Richter’s independent group used psi.
Keep exploring
Lives connected to this story
- Isidor Isaac Rabi
Compare successive experimental traditions in which particle identification and controlled measurements were essential.
- Martin Perl
Ting completed his doctorate under Perl and Lawrence Jones.
- Burton Richter
Richter led the independent SPEAR resonance experiment.
Sources and further reading
Explore the evidence
These references support the biography and offer further reading. Official records, first-person accounts and independent reporting provide different perspectives; image records document attribution and licensing.