Special Joint Theory Seminar
Speaker: Sergei Dubovsky
Title: Flux Tube Spectra from Approximate Integrability at Low Energies
Host: Luty
Room: 432
Abstract: We propose a new approach for the calculation of the spectrum of excitations of QCD flux tubes. The method relies on approximate integrability of the low energy effective theory describing the flux tube excitations and is based on the Thermodynamic Bethe Ansatz (TBA). The approximate integrability is a consequence of the Lorentz symmetry of QCD. For excited states the convergence of the TBA technique is significantly better than that of the traditional perturbative approach.The improved theoretical control makes it manifest that existing lattice data provides strong evidence for a new pseudoscalar particle localized on the QCD fluxtube - the worldsheet axion.
User:
High-Energy Seminars
Time:
8:00am-9:00am
Description:
HE Seminar
Speaker: Abe Seiden
Title: ATLAS Phase-II Planning and R&D
Host: Chertok
Room: 432
Abstract:
The HL-LHC and the significantly upgraded CMS and ATLAS detectors (called the Phase-II upgrade) have been recommended as the highest priority large scale particle physics construction projects for the future by the recent P5 committee. Both CMS and ATLAS are now working on the concrete plans for this upgrade, with a goal of collecting 3000 fb-1 of data at the very high luminosity HL-LHC. I will review some of the physics goals for the HL-LHC running and the ATLAS upgrade plan as well as the associated R&D being done in the U.S. to answer some of the challenges presented by the upgrade.
