| Torbjörn Sjöstrand | |
| Birth Date: | 13 November 1954 |
| Fields: | Particle physics Theoretical physics |
| Education: | Lund University |
| Thesis Title: | Phenomenological Studies On Jet Fragmentation |
| Thesis1 Url: | and |
| Thesis2 Url: | )--> |
| Thesis Year: | 1982 |
| Awards: | Sakurai Prize (2012) High Energy and Particle Physics Prize (2021) |
| Spouses: | )--> |
| Partners: | )--> |
| Website: | http://home.thep.lu.se/~torbjorn/ |
Torbjörn Sjöstrand (born 13 November 1954) is a Swedish theoretical physicist and a professor at Lund University in Sweden, where he also got his PhD in 1982.[1] He is one of the main authors of PYTHIA, a program for generation of high-energy physics events.[2]
In his early career, Sjöstrand spent shorter postdoc periods at DESY (Germany) and Fermilab (USA). From 1989 to 1995 he was staff member in the CERN Theory division.
In 2012, he was awarded the J. J. Sakurai Prize for Theoretical Particle Physics by the American Physical Society. The citation reads:[3]
In 2021, he was awarded the High Energy and Particle Physics Prize of the European Physical Society for the development of PYTHIA. He received the award together with Bryan Webber, who was also a co-recipient of the Sakurai Prize.[4]