Bulletin of the American Physical Society
2017 Fall Meeting of the APS Division of Nuclear Physics
Volume 62, Number 11
Wednesday–Saturday, October 25–28, 2017; Pittsburgh, Pennsylvania
Session CE: Advances in Mesonic Physics |
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Chair: Colin Morningstar, Carnegie Mellon University Room: Salon 5 |
Thursday, October 26, 2017 8:30AM - 9:06AM |
CE.00001: Hadron-hadron scattering from Lattice QCD with $N_f=2+1+1$ quark flavours Invited Speaker: Carsten Urbach We present results for hadron-hadron scattering obtained using lattice QCD. The analysis is mainly based on ensembles produced by the European Twisted Mass collaboration (ETMC) using the Wilson twisted mass formulation of lattice QCD with active up/down, strange and charm quarks. The simulations cover three values of the lattice spacing and a range of pion mass values from 230 MeV to 500 MeV. We mainly focus on the investigation of pion-pion, pion-kaon and kaon-kaon scattering in various isospin channels. We discuss how to controll the main systematic uncertainties stemming from the continuum and the chiral extrapolations. Results are compared to other lattice collaborations and to experimental results, where applicable. In addition we present our progress for pion-nucleon scattering based on ensembles with physical pion mass value. [Preview Abstract] |
Thursday, October 26, 2017 9:06AM - 9:42AM |
CE.00002: A Map to Hadronic Physics from GlueX Invited Speaker: Curtis Meyer The GlueX Experiment in Hall-D at Jefferson Lab started its official physics program in the spring of 2017, collecting about 50 billion events over a five-week period. Utilizing the CEBAF 11.6 GeV electron beam, polarized photons in the energy range from 8.2 to 8.8 GeV were collected in four different orientations of linear polarization and analysis of this data is advanced. This talk will report of the various GlueX programs of physics analysis to better understand production mechanisms at these photon energies, initial work on understanding polarization observable which will ultimately lead to amplitude analysis, and opportunistic physics searches made possible by the GlueX data. Finally, how these feed into our ultimate searches for exotic quantum number states in GlueX. [Preview Abstract] |
Thursday, October 26, 2017 9:42AM - 10:18AM |
CE.00003: Theory of Exotic Mesons Invited Speaker: Eric Swanson Theoretical interpretations of a variety of exotic mesonic states is reviewed with emphasis on the new particles discovered by LHCb. Ideas ranging from simple kinematical effects to novel field configurations of QCD will be discussed. [Preview Abstract] |
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