page_title: Probir Roy
section_title: Biography
hierarchical_section_title: Probir Roy / Biography
caption_attribution_description: English: King's College, Cambridge
context_page_description: Probir Roy is an Indian particle physicist and a former professor at Tata Institute of Fundamental Research. He is also a senior scientist of the Indian National Science Academy at Bose Institute and a former Raja Ramanna fellow of Department of Atomic Energy at Saha Institute of Nuclear Physics.
  Known for the development of a sum rule on two-photon processes, Roy is an elected fellow of all the three major Indian science academies – Indian Academy of Sciences, Indian National Science Academy and National Academy of Sciences, India – as well as of the American Physical Society. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, for his contributions to physical sciences in 1987.
context_section_description: Born on 4 October 1942 at Calcutta in the Bengal state of British India to Kiran Lal Roy-Sujata Sikdar couple, Probir Roy graduated in physics with honours from Presidency College under Calcutta University in 1962 before moving to Cambridge University to obtain an MA (cantab) from Kings College, Cambridge in 1965. Subsequently, he joined Stanford University for his doctoral studies and secured a PhD, mentored by S. M. Berman, for his thesis in Kaon physics, in 1968. During this period, he worked at Stanford Linear Accelerator Center as a research assistant (1966–68) and as a temporary research associate (1968). He remained in the US for three more years for his post-doctoral work at Cornell University where he worked at the laboratories of Kenneth G. Wilson, who would go on to receive the Nobel Prize for physics in 1982, and Toichiro Kinoshita, an APS fellow, simultaneously serving the University as an instructor. Before returning to India in 1972, he had a one-year spell at CERN during 1971–72 as a visiting scientist.
  Roy's career at Tata Institute of Fundamental Research started in 1972 as a visiting fellow and he became a regular research fellow a year later. He served the institution for three decades and half and before his superannuation from TIFR service as a senior professor in 2017, he held various positions as reader (1976–83), associate professor (1983–90) and professor (1990–93). After retiring from regular service, he continued his research at Saha Institute of Nuclear Physics as a DAE Raja Ramanna fellow of the Board of Research in Nuclear Sciences (BRNS) until 2012 and carries on his research at the Center for Astroparticle Physics and Space Science (CAPSS) of Bose Institute as a senor scientist of the Indian National Science Academy ever since. In between, he had several spells abroad as a visiting faculty and the institutions he has served include Oxford University, University of Texas at Austin, University of California, Riverside, University of Hawaii at Manoa, University of Helsinki and Kavli Institute for Theoretical Physics.
  Roy is married to Manashi Bhattacharya and the couple has two children, Jagori and Analabha. The family lives in Salt Lake City, a satellite city of Kolkata, West Bengal.
caption: King's College, Cambridge
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