Browsing by Subject "Antiquarks"

Now showing items 1-3 of 3

    • Article  

      Investigating efficient methods for computing four-quark correlation functions 

      Abdel-Rehim, A.; Alexandrou, Constantia; Berlin, J.; Dalla Brida, M.; Finkenrath, J.; Wagner, M. (2017)
      We discuss and compare the efficiency of various methods, combinations of point-to-all propagators, stochastic timeslice-to-all propagators, the one-end trick and sequential propagators, to compute two-point correlation ...
    • Conference Object  

      A lattice calculation of parton distributions 

      Alexandrou, Constantia; Cichy, K.; Hadjiyiannakou, Kyriakos; Jansen, K.; Steffens, F.; Wiese, C. (Proceedings of Science (PoS), 2016)
      We present results for the x dependence of the unpolarized, helicity, and transversity isovector quark distributions in the proton using lattice QCD, employing the method of quasi-distributions proposed by Ji in 2013. ...
    • Conference Object  

      Study of the a0(980) on the lattice 

      Wagner, M.; Abdel-Rehim, A.; Alexandrou, Constantia; Gravina, M.; Koutsou, Giannis; Brida, M. D.; Scorzato, L.; Urbach, C. (Proceedings of Science (PoS), 2013)
      We present lattice results for the a0(980) state using a variational approach with a variety of creation operators: quark- Antiquark, mesonic molecule, diquark- Antidiquark as well as two-meson type. Focus is put on recent ...