Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-01-17
Few Body Syst.Suppl. 14 (2003) 393
Physics
High Energy Physics
High Energy Physics - Phenomenology
Invited talk given at the 18th European Conference on Few-Body Problems in Physics, Bled, Slovenia, 8-14 Sep 2002. Submitted t
Scientific paper
The effect of different boost expressions, pertinent to the instant, front and point forms of relativistic quantum mechanics, is considered for the calculation of the ground-state form factor of a two-body system in simple scalar models. Results with a Galilean boost as well as an explicitly covariant calculation based on the Bethe-Salpeter approach are given for comparison. It is found that the present so-called point-form calculations of form factors strongly deviate from all the other ones. This suggests that the formalism which underlies them requires further elaboration. A proposition in this sense is made.
Amghar A.
Desplanques Bertrand
Noguera Santiago
Theussl L.
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