منابع مشابه
Deeply Virtual Compton Scattering at JLab Hall A
The deeply virtual Compton scattering reaction has been investigated in the Hall A of the Jefferson Laboratory by measuring longitudinally polarized (~e, e′γ) cross sections, in the valence quark region, for protons and neutrons. In the proton channel, experimental results strongly support the factorization of the cross section at Q as low as 2 GeV, opening the path to sytematic measurements of...
متن کاملTimelike Compton Scattering in Ultraperipheral Collisions
Exclusive photoproduction of dileptons, γN → ll N , is and will be measured in ultraperipheral collisions at hadron colliders. We demonstrate that the timelike deeply virtual Compton scattering (TCS) mechanism γq → llq, where the lepton pair comes from the subprocess γq → γ∗q, dominates in some accessible kinematical regions, thus opening a new way to study generalized parton distributions (GPD...
متن کاملThe electromagnetic calorimeter in JLab Real Compton Scattering Experiment
A hodoscope calorimeter comprising of 704 lead-glass blocks is described. The calorimeter was constructed for use in the JLab Real Compton Scattering experiment. The detector provides a measurement of the coordinates and the energy of scattered photons in the GeV energy range with resolutions of 5 mm and 6%/ p Eγ [GeV ], respectively. Design features and performance parameters during the experi...
متن کاملTimelike Compton scattering: exclusive photoproduction of lepton pairs
We investigate the exclusive photoproduction of a heavy timelike photon which decays into a lepton pair, γp → `+`− 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 t...
متن کاملCompton scattering sources and applications at LLNL
We report the design and current status of a monoenergetic laser-based Compton scattering 0.5-2.5 MeV -ray source. Previous nuclear resonance fluorescence results and future linac and laser developments for the source are presented.
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ژورنال
عنوان ژورنال: Physics of Particles and Nuclei
سال: 2014
ISSN: 1063-7796,1531-8559
DOI: 10.1134/s1063779614010778