A study of the gamma* - f0(980) transition form factors

Abstract

The spin wave function of the f0(980)-meson is constructed under the assumption that the meson is dominantly a quark-antiquark state. This wave function is used in a calculation of the gamma* - f0 transition form factors. In the real-photon limit the results for the transverse form factor are compared to the large momentum transfer data measured by the BELLE collaboration recently. It turns out that, for the momentum-transfer range explored by BELLE, the collinear approximation does not suffer, power corrections to it, modeled as quark transverse moment effects, seem to be needed. Mixing of the f0 with the sigma(500) is also briefly discussed.

23 pages, 6 figure, latex typos corrected and extended discussion of mixing

References in corpus (7)

• A Theory of Scalar Mesons
• The Status of Glueballs
• Study of ${\pi }^0$ pair production in single-tag two-photon collisions
• Dynamical quark loop light-by-light contribution to muon g-2 within the nonlocal chiral quark model
• Electroproduction of tensor mesons in QCD
• Insight into $f_0(980)$ through the $B_{(s)}$ charmed decays
• Study of the $f_2(1270)$ and $a_2(1320)$ resonances in ${\gamma }^{\ast }(Q^2)\gamma$ collisions

Cited by in corpus (10)

• Hadron tomography by generalized distribution amplitudes in pion-pair production process ${\gamma }^{\ast }\gamma \to {\pi }^0{\pi }^0$ and gravitational form factors for pion
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• A dispersive estimate of scalar contributions to hadronic light-by-light scattering
• Asymptotic behavior of meson transition form factors
• Exploratory study of possible resonances in the heavy meson - heavy baryon coupled-channel interactions
• $CP$ violation in $\eta$ muonic decays
• Production of $f_0(980)$ meson at the LHC: Color evaporation versus color-singlet gluon-gluon fusion
• QCD Constituent Counting Rules for Neutral Vector Mesons
• On some implications of the BaBar data on the ${\gamma }^{\ast }{\eta }^{\prime }$ transition form factor
• Role of QCD compositeness in the production of scalar and tensor mesons through single-photon annihilation $e^{+}{e}^{-}\to {\gamma }^{\ast }\to \gamma S(T)$