Browsing by Author "Proestos, Y."

Now showing items 1-4 of 4

    • Article  

      Critical hopping parameter in O(a) improved lattice QCD 

      Panagopoulos, Haralambos G.; Proestos, Y. (2002)
      We calculate the critical value of the hopping parameter, κ c, in O(a) improved lattice QCD, to two loops in perturbation theory. We employ the Sheikholeslami-Wohlert (clover) improved action for Wilson fermions. The ...
    • Article  

      Electromagnetic form factors of the Ω- In lattice QCD 

      Alexandrou, Constantia; Korzec, T.; Koutsou, Giannis; Negele, J. W.; Proestos, Y. (2010)
      We present results on the omega baryon (Ω-) electromagnetic form factors using Nf=2+1 domain-wall fermion configurations for three pion masses in the range of about 350 to 300 MeV. We compare results obtained using domain-wall ...
    • Article  

      Nucleon to Δ transition form factors with NF=2+1 domain wall fermions 

      Alexandrou, Constantia; Koutsou, Giannis; Negele, J. W.; Proestos, Y.; Tsapalis, Antonios (2011)
      We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Δ(1232) transition using two dynamical light degenerate quarks and a dynamical strange quark simulated with the domain wall fermion ...
    • Article  

      O(a) improved QCD: The 3-loop beta-function, and the critical hopping parameter 

      Bode, Achim; Panagopoulos, Haralambos G.; Proestos, Y. (2002)
      We calculate the 3-loop bare β-function of QCD, formulated on the lattice with the clover fermionic action. The dependence of our result on the number of colors N, the number of fermionic flavors Nf, and the clover parameter ...