Applications of a nonlinear evolution equation II: the EMC effect

Abstract

The EMC effect is studied by using the GLR-MQ-ZSR equation with minimum number of free parameters, where the nuclear shadowing effect is a dynamical evolution result of the equation, and nucleon swelling and Fermi motion in the nuclear environment deform the input parton distributions. Parton distributions of both proton and nucleus are predicted in a unified framework. We show that the parton recombination as a higher twist correction plays an essential role in the evolution of parton distributions either of proton or nucleus. We find that the nuclear antishadowing contributes a part of enhancement of the ratio of the structure functions around $x\sim 0.1$, while the other part origins from the deformation of the nuclear valence quark distributions. We point out that the nuclear shadowing and antishadowing effects in the gluon distribution are not stronger than that in the quark distributions.

22 pages, 8 figures, Published version in Int. J. Mod. Phys. E

References in corpus (4)

• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Determination of nuclear parton distribution functions and their uncertainties at next-to-leading order
• The EMC Effect and High Momentum Nucleons in Nuclei
• Applications of a nonlinear evolution equation I: the parton distributions in the proton

Cited by in corpus (6)

• Global study of nuclear modifications on parton distribution functions
• Pion Valence Quark Distributions from Maximum Entropy Method
• The chaotic effects in a nonlinear QCD evolution equation
• Application of the rescaling model at small Bjorken $x$ values
• Parton distributions and $\cos 2{\varphi }_h$ asymmetry induced by anomalous photon-quark coupling
• Looking for quark saturation in proton and nuclei