Calendar of Physics Talks Vienna

On the possibility to search for new physics using underground accelerators and neutrino detectors
Speaker:Maxim Pospelov (University of Victoria - Department of Physics and Astronomy)
Abstract:Last few years has seen a renewed interest to new physics in the form of light weakly coupled particles. In this talk I show that such new physics (especially in the 100 keV - MeV range) can be very effectively probed using large neutrino detectors in the underground laboratories, coupled with proton or electron accelerators. That way, one can significantly advance sensitivity to light dark matter and metastable particles.
Date: Mon, 20.04.2015
Time: 14:00
Duration: 60 min
Location:HEPHY - Library
Contact:Josef Pradler

Precision calculations of semileptonic B decays
Speaker:Yu-Ming Wang (TU Munich)
Abstract:im Rahmen des Teilchenphysikseminars: I will review the theory status and recent progress in the precision calculations of semileptonic B decays, with an introduction to the fundamental questions in B physics and some general discussion on the experimental programs carried out in the flavor factories. Focusing on a personal selection of topics, this covers the QCD aspects of electroweak penguin decays of B mesons, the determination of CKM matrix element|V_ub| and the new development of B-meson LCDAs.
Date: Tue, 21.04.2015
Time: 16:15
Duration: 60 min
Location:Fakultät für Physik, Boltzmanngasse 5, Erwin-Schrödinger-Hörsaal, 5. Stock
Contact:A. Hoang, H. Neufeld

Past, Present and Future of Hypernuclear Physics
Speaker:Alicia Sanchez Lorente (Mainz)
Abstract:Since their discovery, in the early 1950’s, hypernuclei have played an important role in the development of hadron physics. The study of strange nuclear systems has evolved over subsequent decades, from the early stud- ies using cosmic rays and nuclear emulsions, to the spectrometer era. In addition, it will be driven by the availability of new technologies, as new beams and detectors became available. Presently, almost all information on single and double-hypernuclei is limited even today. The advent of new accelerators, which will provide intense beams of kaons, pions, anti-protons and electrons will enable by the first time the production of a huge amount of data in this sector. In the present talk, an overview of the past, present and future of hypernuclear physics will be given.
Date: Wed, 22.04.2015
Time: 17:00
Duration: 60 min
Location:Stefan-Meyer-Institut, Hörsaal 2.08, Boltzmanngasse 3, 1090
Contact:Ken Suzuki

The Cauchy problem for semilinear wave equations
Speaker:Roland Donninger (Math. Institut / Hausdorff Center for Mathematics - Universität Bonn)
Abstract:im Rahmen des Seminars in Geometric Analysis and Physics (GAP Seminar): I will review some basic aspects of well-posedness theory for semilinear wave equations. In particular, I will discuss the celebrated Strichartz estimates.
Date: Thu, 23.04.2015
Time: 11:00
Duration: 60 min
Location:Fakultät für Mathematik, Oskar-Morgenstern-Platz 1,1090 Wien, 2. Stock, Besprechungszimmer
Contact:M. Bauer (Fak. Math, U.V.), V. Branding (Fak. Math, T.U.), D. Fajman (Fak. Phys, U.V.), J. Joudioux (Fak. Phys, U.V.)

Blowup results for nonlinear wave equations
Speaker:Roland Donninger (Math. Institut / Hausdorff Center for Mathematics - Universität Bonn)
Abstract:im Rahmen des Literaturseminars: In the last 15 years there was spectacular progress in the rigorous analysis of finite-time blowup in nonlinear wave equations. Many of these studies were actually motivated by the desire to obtain a better understanding of singularity formation in Einstein's equations. Mainly based on personal taste, I will discuss some of the most important contributions.
Date: Thu, 23.04.2015
Time: 14:00
Duration: 60 min
Location:Arbeitsgruppe Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock, 1090 Wien
Contact:P.T. Chrusciel

On the way to future circular colliders: new physics opportunities with top quarks
Speaker:Benjamin Fuks (IPHC Strasbourg)
Abstract: With the end of the first run of the LHC and the beginning of the next run, it is timely to start considering the next phase of the high-energy collider program including both the LHC and future projects under discussion. In this context, I will describe various studies relevant for top physics. More specifically, I will show how highly-massive top-antitop systems could be observed and employed for constraining new physics, investigate the reach of future proton-proton and electron-positron machines to top flavor-changing neutral interactions and discuss top parton densities. In a last step, I will focus on some new physics motivations for building a future polarized proton-proton facility.
Date: Fri, 24.04.2015
Time: 10:30
Duration: 60 min
Location:Seminarraum, Wohllebengasse 12-14
Contact:Helmut Eberl