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Comparison of different boost transformations for the calculation of form factors in relativistic quantum mechanics

Abstract : 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.
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Submitted on : Tuesday, January 28, 2003 - 4:16:10 PM
Last modification on : Thursday, November 19, 2020 - 12:58:38 PM

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L. Theussl, A. Amghar, B. Desplanques, S. Noguera. Comparison of different boost transformations for the calculation of form factors in relativistic quantum mechanics. European Conference on Few-Body Problems in Physics 18, Sep 2002, Bled, Slovenia. pp.393-398. ⟨in2p3-00013699⟩

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