Leading twist nuclear shadowing, nuclear generalized parton distributions, and nuclear deeply virtual Compton scattering at smallx
نویسندگان
چکیده
منابع مشابه
Generalized Parton Distributions, Deeply Virtual Compton Scattering and TMDs
Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, exhibit a significant deviation from axial symmetry when target and/or quark are transversely polarized. In combination with the final state interactions, this transverse deformation provides a natural mechanism for naive-T odd transverse single-spin asymmetries in semi-inclusive DIS. The deformatio...
متن کاملDeeply virtual Compton scattering and generalized parton distributions
We present a comparison of a recently proposed model, which describes the Deeply Virtual Compton Scattering amplitude, to the HERA data.
متن کاملShadowing Aspects of Nuclear Parton Distributions
Various shadowing aspects of nuclear parton distributions are discussed in a partonmodel framework. We explain existing x dependent data of F 2 /F 2 , then the model is applied to a flavor asymmetry ū − d̄ in a nucleus, to shadowing in valence-quark distributions, and to nuclear dependence of Q evolution. First, we find that a finite nuclear ū−d̄ distribution could be possible due to nuclear inte...
متن کامل0 Leading twist asymmetries in deeply virtual Compton scattering
We calculate spin, charge, and azimuthal asymmetries in deeply virtual Compton scattering at leading twist-two level. The measurement of these asymmetries gives access to the imaginary and real part of all deeply virtual Compton scattering amplitudes. We note that a consistent description of this process requires taking into account twist-three contributions and we give then a model dependent e...
متن کاملLeading twist coherent diffraction on nuclei in deep inelastic scattering at small x and nuclear shadowing
We extend the theory of leading twist nuclear shadowing to calculate leading twist nuclear diffractive parton distribution functions (nDPDFs). We observe that the quark and gluon nPDFs have different patterns of the A-dependence. It is found that the probability of diffraction in the quark channel increases with A, reaching about 30% at x ∼ 10−4 for A ∼ 200, and weakly decreases with Q2. In the...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2009
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.79.035210