$Q^2$ - Dependence of Exclusive Meson Production in Two Photon Reactions - INSPIRE

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$Q^2$ - Dependence of Exclusive Meson Production in Two Photon Reactions

Jul, 1985

45 pages

Published in:

Phys.Rev.D 33 (1986) 689

DOI:

10.1103/PhysRevD.33.689

Report number:

UCD-85/2

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Abstract: (APS)

We calculate the amplitudes for e+e−→e+e− MM¯ at large angle as a function of the invariant masses qa2 and qb2 of the two virtual photons. We demonstrate that the qa2 and qb2 dependence provides highly detailed tests of the applicability of QCD to predictions of exclusive large-angle processes. In addition, at moderate energies the q2 dependence may be used to unambiguously distinguish between possible vector-meson-dominated (i.e., purely hadronic) contributions and those arising from the asymptotically dominant pointlike-photon couplings. We present analytic forms for all relevant amplitudes.

ELECTRON POSITRON: INELASTIC SCATTERING
INELASTIC SCATTERING: ELECTRON POSITRON
ELECTRON POSITRON: EXCLUSIVE REACTION
MESON: PAIR PRODUCTION
PAIR PRODUCTION: MESON
momentum transfer dependence
SCATTERING: WIDE-ANGLE
WIDE-ANGLE: SCATTERING
QUANTUM CHROMODYNAMICS
EXCHANGE: TWO-PHOTON

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Figures(0)

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