Browsing by Author "Vanderhaeghen, M."

Now showing items 1-3 of 3

    • Article  

      Colloquium: The shape of hadrons 

      Alexandrou, Constantia; Papanicolas, Costas N.; Vanderhaeghen, M. (2012)
      This Colloquium addresses the issue of the shape of hadrons and, in particular, that of the proton. The concept of shape in the microcosm is critically examined. Special attention is devoted to properly define the meaning ...
    • Article  

      Quark transverse charge densities in the Δ (1232) from lattice QCD 

      Alexandrou, Constantia; Korzec, T.; Koutsou, Giannis; Lorcé, C.; Negele, J. W.; Pascalutsa, V.; Tsapalis, Antonios; Vanderhaeghen, M. (2009)
      We extend the formalism relating electromagnetic form factors to transverse quark charge densities in the light-front frame to the case of a spin-3/2 baryon and calculate these transverse densities for the Δ (1232) isobar ...
    • Article  

      Δ-baryon electromagnetic form factors in lattice QCD 

      Alexandrou, Constantia; Korzec, T.; Koutsou, Giannis; Leontiou, Theodoros; Lorcé, C.; Negele, J. W.; Pascalutsa, V.; Tsapalis, Antonios; Vanderhaeghen, M. (2009)
      We develop techniques to calculate the four Δ electromagnetic form factors using lattice QCD, with particular emphasis on the subdominant electric quadrupole form factor that probes deformation of the Δ. Results are presented ...