TY - JOUR
T1 - η transition form factor; A combined analysis of space- and time-like experimental data through rational approximants
AU - Escribano, R.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - A combined analysis of the space- and time-like experimental data for the η transition form factor is performed in a model-independent way by means of rational approximants. The recent measurement of the e+ e- invariant mass spectrum of the η → e+ e- γ decay provided by the A2 Collaboration allowed us to extract the most precise and up-to-date slope and curvature parameters of the form factor. The impact of this new analysis on the η-η' mixing parameters and the VPγ couplings is also discussed.
AB - A combined analysis of the space- and time-like experimental data for the η transition form factor is performed in a model-independent way by means of rational approximants. The recent measurement of the e+ e- invariant mass spectrum of the η → e+ e- γ decay provided by the A2 Collaboration allowed us to extract the most precise and up-to-date slope and curvature parameters of the form factor. The impact of this new analysis on the η-η' mixing parameters and the VPγ couplings is also discussed.
KW - Rational approximants
KW - Slope and curvature parameters;η-ηmixing
KW - Space- and time-like data analysis
KW - V→Pγradiative decays
KW - ηtransition form factor
U2 - 10.3969/j.issn.0253-2778.2016.06.003
DO - 10.3969/j.issn.0253-2778.2016.06.003
M3 - Article
SN - 0253-2778
VL - 46
SP - 462
EP - 469
JO - Journal of University of Science and Technology of China
JF - Journal of University of Science and Technology of China
IS - 6
ER -