TY - JOUR
T1 - η and η ′ transition form factors from rational approximants
AU - Escribano, Rafel
AU - Masjuan, Pere
AU - Sanchez-Puertas, Pablo
PY - 2014/2/10
Y1 - 2014/2/10
N2 - The η and η′ transition form factors in the spacelike region are analyzed at low and intermediate energies in a model-independent way through the use of rational approximants. The slope and curvature parameters of the form factors as well as their values at zero and infinity are extracted from experimental data. The impact of these results on the mixing parameters of the η-η′ system and the pseudoscalar-exchange contributions to the hadronic light-by-light scattering part of the anomalous magnetic moment aμ are also discussed. © 2014 American Physical Society.
AB - The η and η′ transition form factors in the spacelike region are analyzed at low and intermediate energies in a model-independent way through the use of rational approximants. The slope and curvature parameters of the form factors as well as their values at zero and infinity are extracted from experimental data. The impact of these results on the mixing parameters of the η-η′ system and the pseudoscalar-exchange contributions to the hadronic light-by-light scattering part of the anomalous magnetic moment aμ are also discussed. © 2014 American Physical Society.
UR - https://www.scopus.com/pages/publications/84894669751
U2 - 10.1103/PhysRevD.89.034014
DO - 10.1103/PhysRevD.89.034014
M3 - Article
SN - 1550-7998
VL - 89
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
M1 - 034014
ER -