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Timelike Compton scattering: exclusive photoproduction of lepton pairs
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Timelike Compton scattering: exclusive photoproduction of lepton pairs
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We investigate the exclusive photoproduction of a heavy timelike photon which decays into a lepton pair, gamma p -> l+ l- p. This can be seen as the analog of deeply virtual Compton scattering, and we argue that the two processes are complementary for studying generalized parton distributions in the nucleon. In an unpolarized experiment the angular distribution of the leptons readily provides access to the real part of the Compton amplitude. We estimate the possible size of this effect in kinematics where the Compton process should be dominated by quark exchange.
Forward citations
Cited by 8 Pith papers
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The paper proposes using two-photon exchange interference in e+e- to (pi pi)(pi pi) to access chiral-odd dimeson GDAs that encode spin-orbit correlations in spin-zero mesons.
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Exclusive photoproduction of a di-meson pair with large invariant mass
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Coherent deeply virtual Compton scattering on helium-4 beyond leading power
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