Torbjörn Sjöstrand

Torbjörn Sjöstrand is a Swedish theoretical elementary particle physicist.

Sjöstrand completed his intermediate diploma in 1976 at Lund University , where he received his PhD in theoretical physics in 1982 under Bo Andersson and Gösta Gustafson. After that he was at DESY in 1983/84 and at Fermilab in 1984/85 . After several years as an assistant professor in Lund, he became a member of the theory group at CERN in 1989 . In 1995 he returned to Lund as a research physicist, where he received a full professorship in 2000. From 2004 to 2007 he was again on sabbaticals at CERN.

Sjöstrand investigated models for hadronization, multiparton interaction and parton showers in initial and final states in quantum chromodynamics . He was the main developer of the Monte Carlo -based event generators Jetset and Pythia for high energy physics. They have been used in many collider experiments since the 1980s (used by Sjöstrand himself for LEP and Tevatron data analysis, for example ). He continues to research improved analytical methods, particularly for LHC data.

In 1992 he received the Edlunska Prize from the Royal Swedish Academy of Sciences. In 2012 he received the Sakurai Prize for key ideas for the accurate confirmation of the Standard Model in particle physics .

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Individual evidence

↑ Laudation: For key ideas leading to the detailed confirmation of the Standard Model of particle physics, enabling high energy experiments to extract precise information about Quantum Chromodynamics, electroweak interactions and possible new physics.

personal data
SURNAME	Sjöstrand, Torbjörn
BRIEF DESCRIPTION	Swedish physicist
DATE OF BIRTH	20th century

[1] Laudation: For key ideas leading to the detailed confirmation of the Standard Model of particle physics, enabling high energy experiments to extract precise information about Quantum Chromodynamics, electroweak interactions and possible new physics.