Measurements of the meson - photon transition form-factors of light pseudoscalar mesons at large momentum transfer - INSPIRE

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Measurements of the meson - photon transition form-factors of light pseudoscalar mesons at large momentum transfer

CLEO

Collaboration

Jul, 1997

30 pages

Published in:

Phys.Rev.D 57 (1998) 33-54

e-Print:

hep-ex/9707031 [hep-ex]

DOI:

10.1103/PhysRevD.57.33

Report number:

SLAC-PUB-9838,
CLNS-97-1477,
CLEO-97-7

Experiments:

CESR-CLEO-II

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Abstract:

Using the CLEO~II detector, we have measured the differential cross sections for exclusive two-photon production of light pseudoscalar mesons

\pi^0

,

\eta

, and

\eta^{\prime}

. From our measurements we have obtained the form factors associated with the electromagnetic transitions

\gamma^*\gamma

\to

meson. We have measured these form factors in the momentum transfer ranges from 1.5 to 9, 20, and 30 GeV

^2

for

\pi^0

,

\eta

, and

\eta^{\prime}

, respectively, and have made comparisons to various theoretical predictions.

electron positron: colliding beams
exchange: two-photon
photon photon: interaction
pseudoscalar meson: photoproduction
pi0
eta
eta(958)
form factor: transition
momentum transfer dependence
pseudoscalar meson: radiative decay

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