CPT

Calendar of Physics Talks Vienna

A composite model for B decay anomalies and dark matter
Speaker:Prof. James Cline (McGill University)
Abstract:The LHCb experiment has found tentative evidence for the breakdown of lepton flavor universality in decays of neutral B mesons to K (or K^*) plus leptons. Exchange of a heavy leptoquark is one way to explain the observations. I present a simple model where the leptoquark, along with heavy quark and lepton partners and a TeV-scale dark matter candidate, arise from strong interactions of a new SU(N) confining gauge interaction. The model predicts other flavor-changing rare processes, direct detection of the dark matter, and production of the heavy states at LHC. It can also explain the anomalous magnetic moment of the muon if the new confinement scale is ~100 GeV.
Date: Tue, 24.10.2017
Time: 14:00
Duration: 60 min
Location:HEPHY Library
Contact:Josef Pradler

BMS4 at spatial infinity
Speaker:Cedric Troessaert (MPI für Gravitationsphysik, Potsdam)
Abstract:A few years ago Strominger argued that the BMS4 algebra, usually defined at null infinity, should be regarded as a true symmetry of gravitational evolution of asymptotically flat space-times. This implies the existence of an infinite tower of conserved quantities and brings new insight to various problems like gravitational scattering or black-holes evaporation. In this talk, I will show how BMS4 algebra arises as a symmetry at spatial infinity.
Date: Tue, 24.10.2017
Time: 14:00
Duration: 60 min
Location:TU Wien, Freihaus, SEM 136, 10. Stock, Wiedner Hauptstr. 8-10, 1040 Wien
Contact:S. Fredenhagen, D. Grumiller

Computing Long-Distance Contributions in Flavour Physics
Speaker:Christopher T. Sachrajda (University of Southampton)
Abstract:3. Vorlesung im Rahmen der Schrödinger-Gastprofessur 2017
Date: Tue, 24.10.2017
Time: 16:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:A. Hoang, H. Neufeld, G. Ecker