Speaker
Joseph Delmar
(Temple University)
Description
We present a calculation of the pion and kaon form factors and generalized form factors using matrix elements of local operators. We use an ensemble of two degenerate light, a strange and a charm quark (Nf=2+1+1) of maximally twisted mass fermions with clover improvement. The quark masses are chosen so that they reproduce a pion mass of about 260 MeV, and a kaon mass of 530 MeV. The lattice spacing of the ensemble is 0.093 fm and the lattice has a spatial extent of 3 fm. We analyze several values of the source-sink time separation within the range of 1.12 − 2.23 fm to study and eliminate excited-states contributions. We compare the results for the pion and kaon to assess the level of the SU(3) flavor symmetry breaking.
Primary authors
Joseph Delmar
(Temple University)
Constantia Alexandrou
(University of Cyprus)
Dr
Simone Bacchio
(The Cyprus Institute)
Ian Cloet
(Argonne National Laboratory)
Martha Constantinou
(Temple University)
Kyriakos Hadjiyiannakou
(The Cyprus Institute)
Giannis Koutsou
(The Cyprus Institute)
Colin Lauer
(Temple University)
Alejandro Vaquero Avilés-Casco
(University of Utah)
