Measurement of the ${\gamma }^{\star }{\gamma }^{\star }\to {\eta }^{\prime }$ transition form factor

Abstract

We study the process $e^{+}{e}^{-}\to e^{+}{e}^{-}{\eta }^{\prime }$ in the double-tag mode and measure for the first time the ${\gamma }^{\star }{\gamma }^{\star }\to {\eta }^{\prime }$ transition form factor $F_{{\eta }^{\prime }}(Q_1^2,Q_2^2)$ in the momentum-transfer range \mbox{2 $<Q_1^2,Q_2^2<$ 60 GeV${}^2$}. The analysis is based on a data sample corresponding to an integrated luminosity of around 469 fb${}^{-1}$ collected at the PEP-II $e^{+}{e}^{-}$ collider with the BaBar detector at center-of-mass energies near 10.6 GeV.

arXiv comment13 pages, 10 figures, submitted to Phys. Rev. D

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Cited by in corpus (15)

• Lattice calculation of the pion transition form factor with $N_f=2+1$ Wilson quarks
• Short-distance constraints on hadronic light-by-light scattering in the anomalous magnetic moment of the muon
• ${\gamma }^{\ast }\gamma \to \eta ,{\eta }^{\prime }$ transition form factors
• Hadronic light-by-light contribution to the muon $g-2$ from holographic QCD with solved $U(1{)}_A$ problem
• Hadronic light-by-light contribution to $(g-2{)}_{\mu }$ from lattice QCD with SU(3) flavor symmetry
• Pseudoscalar transition form factors and the hadronic light-by-light contribution to the anomalous magnetic moment of the muon from holographic QCD
• Pion to photon transition form factors with basis light-front quantization
• The ${\gamma }^{\ast }{\gamma }^{\ast }\to {\eta }_c(1S,2S)$ transition form factors for spacelike photons
• Precision evaluation of the $\eta$- and ${\eta }^{\prime }$-pole contributions to hadronic light-by-light scattering in the anomalous magnetic moment of the muon
• The doubly virtual $({\pi }^0,\eta ,{\eta }^{\prime })\to {\gamma }^{\ast }{\gamma }^{\ast }$ transition form factors in the light-front quark model
• ${\pi }^0,\eta ,{\eta }^{\prime }$ two-photon transition form factors in the holographic soft-wall model and contributions to $(g-2{)}_{\mu }$
• Two-gluon production of $\varphi$ and ${\eta }^{\prime }$ mesons in proton-proton collisions at high energies
• On some implications of the BaBar data on the ${\gamma }^{\ast }{\eta }^{\prime }$ transition form factor
• Hadronic contributions to $a_{\mu }$ within Resonance Chiral Theory
• Two photon transition form factors of neutral pseudoscalar mesons