Peter Matthias Zerwas

Peter M. Zerwas (* 1942 in Miesenheim / Andernach) is a German theoretical elementary particle physicist.

Zerwas studied physics at RWTH Aachen University , where he received his doctorate in theoretical physics with a dissertation on chiral symmetry in 1970. After postdoctoral years at DESY in Hamburg and at the SLAC in Stanford / California, he received a professorship for theoretical physics in Aachen in 1976. In 1991 he switched to the theory group at DESY as a leading scientist, combined with a professorship at the University of Hamburg ; he held these positions until his retirement in 2007.

His work in theoretical elementary particle physics led him to visiting professorships and research stays at the laboratories for high energy physics CERN (Geneva), SLAC (Stanford), FNAL (Chicago) and KEK (Tsukuba / Tokyo). He headed the Experiments Committee at CERN's Large Electron-Positron Collider (LEP) and was a member of the Advisory Board of the Particle Data Group at LBNL in Berkeley, California. He was also co-editor of the Zeitschrift für Physik (Particles and Fields), followed by the European Physical Journal (Particles and Fields) at Springer (Heidelberg), and Reports on Progress in Physics at the Institute of Physics (London).

In the early years, Zerwas' main area of ​​work was quantum chromodynamics with quarks as fundamental constituents of matter and gluons , which mediate the forces between them. In this area, the charm quark mass was determined for the first time from neutrino scatter data; papers were written on the transition from heavy quarks to jets ( Peterson fragmentation ); on the fragmentation of gluons in hadron jets ( Hoyer model ), the discovery of which at the DESY storage ring PETRA (positron electron tandem ring facility) experimentally ensured the existence of gluons ; to signals of the self -interaction of gluons ( Bengtsson-Zerwas angle ), which causes the asymptotic freedom of quantum chromodynamics; as well as the hadronic structure of the photons. In later years Zerwas dealt with theoretical predictions for the production of Higgs bosons at the LHC , as well as the production of supersymmetric particles. Preparatory theoretical studies on the physics potential of an electron-positron linear collider for TeV energies that are in the planning phase have taken up a large part of his research area; the experimental precision of such a collider allows physical structures, e.g. B. von Higgs mechanism and supersymmetric scenarios, to research and to classify in underlying theories.

Publications

• Journal articles and contributions to books and conference proceedings are collected in the electronic archive system of high energy physics: INSPIRE HEP .

Books

• Supersymmetry and unification of fundamental interactions , Proceedings, 10th International Conference, SUSY'02, Hamburg 2002, ed. P.Nath and PMZerwas.
• QCD - 20 years later , Proceedings, Conference, Aachen 1992, Vol.1,2, World Scientific Singapore, Ed. PMZerwas and HAKastrup.
• Proceedings: International Neutrino Conference, Aachen 1976 , Vieweg Braunschweig, Eds. H. Faissner, H. Reithler and PMZerwas.

Individual evidence

1. ↑ LMSehgal and PMZerwas, A Model of Dimuon Production by Neutrinos , Phys. Rev. Lett. 36 (1976) 399; (Online) .
2. ↑ C.Peterson, D.Schlatter, I.Schmitt and PMZerwas, Scaling Violations in Inclusive e + e- Annihilation Spectra , Phys. Rev. D27 (1983) 105; (Online) .
3. ↑ P.Hoyer, P.Osland, HGSander, TFWalsh and PMZerwas, Quantum Chromodynamics and Jets in e + e- , Nucl. Phys. B161 (1979) 349; (Online) .
4. ↑ M.Bengtsson and PMZerwas, Four jet events in e + e- Annihilation: Testing the Three gluon vertex , Phys. Lett. B208 (1988) 306; (Online) .
5. ↑ A.Djouadi, M.Spira and PMZerwas, The Production of Higgs Bosons in Proton Colliders. QCD Corrections , Phys. Lett. B264 (1991) 440; (Online) .
6. ↑ W.Kilian and PMZerwas, ILC: Physics scenarios , Proceedings, ILC workshop, Snowmass (Colorado) 2005; (Online) .