Timelike virtual compton scattering from electron-positron radiative annihilation
نویسندگان
چکیده
منابع مشابه
Radiative Corrections to Deeply Virtual Compton Scattering * )
Received XXX We discuss possibilities of measurement of deeply virtual Compton scattering amplitudes via different asymmetries in order to access the underlying skewed parton distributions. Perturbative one-loop coefficient functions and two-loop evolution kernels, calculated recently by a tentative use of residual conformal symmetry of QCD, are used for a model dependent numerical estimation o...
متن کاملElectron - positron annihilation into three pions and the radiative return . ⋆
The Monte Carlo event generator PHOKHARA, which simulates hadron and muon production at electron-positron colliders through radiative return, has been extended to final states with three pions. A model for the form factor based on generalized vector dominance has been employed, which is consistent with presently available experimental observations.
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 کاملDeeply Virtual Compton Scattering with Positron Beams at Jefferson Lab
The challenge of understanding nucleon electromagnetic structure still continues after more than five decades of experimental scrutiny. From the initial measurements of elastic form factors to the accurate determination of parton distributions through deep inelastic scattering, the experiments have increased in statistical and systematic accuracy. Only during the past decade it was realized tha...
متن کاملDeeply-virtual Compton Scattering
We study in QCD the physics of deeply-virtual Compton scattering (DVCS)—the virtual Compton process in the large s and small t kinematic region. We show that DVCS can probe a new type of off-forward parton distributions. We derive an Altarelli-Parisi type of evolution equations for these distributions. We also derive their sum rules in terms of nucleon form-factors of the twist-two quark and gl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2010
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.81.034014