Aktuelle Veranstaltung für Mittwoch, 11.12 2019
|Torben Ferber, DESY Hamburg|
Belle II in Japan is a flagship experiment at the intensity frontier that started data taking this year after massive upgrades of the accelerator and the detector. In this talk I will report on the performance of the Belle II detector and first rediscoveries with the 2019 dataset. In the second part of the talk I will give an overview about the planned Belle II physics program for the next year with a focus on searches for Dark Sectors and Long-Lived Particles.
13:00 Uhr s.t., Lorentz-Raum 05-127, Staudingerweg 7
Wochenübersicht für die Woche 08 Dez 2019 bis 14 Dez 2019 (KW 50)
Seminar about Experimental Particle and Astroparticle Physics (ETAP)
Institut für Physik
12:30 Uhr s.t., Staudingerweg 7, Minkowskiraum
|Kai Loo, Institut für Physik|
Online Scintillator Internal Radioactivity Investigation System (OSIRIS) for JUNO
Institutsseminar Kern- und Hadronenphysik
Institut für Kernphysik
14 Uhr c.t., HS Kernphysik, Becherweg 45
|Ethan Cline, MIT|
In 2010 when the CREMA Collaboration released their measurement of the proton radius (Pohl et. al (2010)) from muonic hydrogen spectroscopy: rp=0.84184(67) fm. This was seven standard deviations smaller than the accepted 2010 CODATA value (0.8768(69) fm). This discrepancy lies at the heart of the proton radius puzzle. The MUon-Proton Scattering Experiment (MUSE) was first proposed in 2012 to be the first muon-proton elastic scattering experiment with sufficient precision to address the proton radius puzzle. MUSE has the capacity to simultaneously measure elastic muon-proton, and electron-proton scattering, and switch polarities to measure with opposite charge states. As such, MUSE can directly measure the two-photon effect by comparing charge-states, and compare muon and electron scattering with minimal systematic error. By comparing the two measured scattering cross sections, the experiment will provide more data for the proton radius puzzle and determine if the radius is the same in electron and muon-proton scattering. We will review the motivation for and status of MUSE, which is due to begin production running in 2020. Initial analysis results will be shown from the summer 2019 beam time.
Seminar für Kern- und Radiochemie
Institut für Kernchemie
16 Uhr c.t., Seminarraum Kernchemie
|Katerina Chrysalidis, Universität Mainz / CERN|
Improving the spectral coverage and selectivity of the ISOLDE RILIS
Institut für Physik
14:30 Uhr s.t., MITP seminar room
|Guoxing Wang, Peking University|
The invariant mass distribution of top quark pair production is an important observable whose threshold behavior is sensitive to top-quark mass. In this talk, I will focus on the invariant mass distribution of top-quark pair production in threshold region and soft region. I will first talk about the resummation of Coulomb corrections in threshold limit β → 0. We combine the resummation with fixed-order results and present phenomenologically relevant numeric results. We find that the resummation effect significantly enhances the differential cross section in the threshold region, and makes the theoretical prediction more compatible with experimental data. As for soft limit z → 1, Ill talk about the calculation of NNLO soft function which is a major bottleneck in pushing up the soft resummation accuracy of top-quark pair production. We show the non-trivial structure of three-parton correlations and the consistent extraction of NNLO soft fragmentation function. At the end, Ill show the preliminary results of hard function and its application to transverse momentum resummation for top-quark pair production and decay in the future.
Institut für Kernphysik, Johann Joachim Becher Weg 45
16 Uhr c.t., HS KPH
|Professor Laura Fabbietti, Physics Department, TU Munich|
A new Laboratory to study Hadron-Hadron Interactions
SFB/TR49/SFB TRR 173 Spin+X-Kolloquium - Seminar experimentelle Physik der kondensierten Materie
SFB/TR49 - Prof. Dr. Elmers
13:30 Uhr s.t., MAINZ-Seminarraum, Staudinger Weg 9, 03-122
|Camilo Ulloa, Utrecht University, NL|
In this talk I will discuss the main concepts of magnon transport through magnetic insulators. I will focus my talk on how to excite and manipulate magnetic degrees of freedom in ferromagnetic materials, and show some of the different ways we can model magnetic insulators, going from quantum mechanics to hydrodynamics.
Seminar über Quanten-, Atom- und Neutronenphysik (QUANTUM)
Institut für Physik
14 Uhr c.t., Lorentz-Raum (05-127), Staudingerweg 7
|Dr. Guillaume Salomon, Max-Planck-Institut für Quantenoptik, Garching|
Developing new approaches to study quantum many-body systems is of fundamental importance in var­ious felds of physics ranging from high energy and condensed matter physics to quantum information and quantum computation. It also holds promise for a better understanding of materials, such as high-Tc superconductors, and fault-tolerant quantum computing which could strongly impact our modern soci­eties. Ultracold atoms have emerged as versatile and well controlled platforms to study fundamental problems in quantum many-body physics. In particular, spin-resolved quantum gas microscopy enables to probe strongly correlated fermions with a resolution down to the single particle and offers fascinating oppor­tunities for experiments. I will detail here this technique and discuss our recent experimental studies of the interplay between magnetism and doping in the Fermi-Hubbard model, a minimal model for high-Tc superconductivity.
Liste der laufenden Seminare und Kolloquien
|Quantum Sonderseminar||Seminarraum Quantum (02-427)||Prof. Dr. Ferdinand Schmidt-Kaler|
|Technische Wartung: ducbao.ta (klammeraffe) uni-mainz.de|