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The form factor of the pion in point-form of relativistic dynamics revisited

Abstract : The electromagnetic form factor of the pion is calculated in the "point-form" of relativistic quantum mechanics using simple, phenomenological wave functions. It is found that the squared charge radius of the pion is predicted one order of magnitude larger than the experimental value and the asymptotic behavior expected from QCD cannot be reproduced. The origin of these discrepancies is analyzed. The present results confirm previous ones obtained from a theoretical model and call for major improvements in the implementation of the "point-form" approach.
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http://hal.in2p3.fr/in2p3-00013698
Contributor : Lpsc Bibliotheque <>
Submitted on : Thursday, October 30, 2003 - 2:28:03 PM
Last modification on : Thursday, November 19, 2020 - 12:58:38 PM

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A. Amghar, B. Desplanques, L. Theussl. The form factor of the pion in point-form of relativistic dynamics revisited. Physics Letters B, Elsevier, 2003, 574, pp.201-209. ⟨in2p3-00013698⟩

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