Skip to Main content Skip to Navigation
Journal articles

RQM description of PS meson form factors, constraints from space-time translations, and underlying dynamics

Abstract : The role of Poincaré covariant space-time translations is investigated in the case of the pseudoscalar-meson charge form factors. It is shown that this role extends beyond the standard energy-momentum conservation, which is accounted for in all relativistic quantum mechanics calculations. It implies constraints that have been largely ignored until now but should be fulfilled to ensure the full Poincaré covariance. The violation of these constraints, which is more or less important depending on the form of relativistic quantum mechanics that is employed, points to the validity of using a single-particle current, which is generally assumed in calculations of form factors. In short, these constraints concern the relation of the momentum transferred to the constituents to the one transferred to the system. How to account for the related constraints, as well as restoring the equivalence of different relativistic quantum mechanics approaches in estimating form factors, is discussed. Some conclusions relative to the underlying dynamics are given in the pion case.
Complete list of metadata

Cited literature [51 references]  Display  Hide  Download

http://hal.in2p3.fr/in2p3-00488627
Contributor : Bertrand Desplanques <>
Submitted on : Friday, December 10, 2010 - 10:09:40 AM
Last modification on : Thursday, November 19, 2020 - 12:58:50 PM
Long-term archiving on: : Friday, March 11, 2011 - 3:08:01 AM

Files

rev2.pdf
Files produced by the author(s)

Identifiers

Collections

IN2P3 | LPSC | CNRS | GEPI | UGA

Citation

B. Desplanques, Y.B. Dong. RQM description of PS meson form factors, constraints from space-time translations, and underlying dynamics. European Physical Journal A, EDP Sciences, 2011, 47, pp.13. ⟨10.1140/epja/i2011-11013-8⟩. ⟨in2p3-00488627v2⟩

Share

Metrics

Record views

466

Files downloads

1067